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author: EmacsConf <emacsconf-org@gnu.org> 2025-12-06 09:30:39 -0500
committer: EmacsConf <emacsconf-org@gnu.org> 2025-12-06 09:30:39 -0500
commit: 662761fc5e3ac3b958dccf7a0378ed8c014c3180 (patch)
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parent: df88a9a01c23de03d0f3ece3ac2eb4941d417f22 (diff)
download: emacsconf-wiki-662761fc5e3ac3b958dccf7a0378ed8c014c3180.tar.xz
emacsconf-wiki-662761fc5e3ac3b958dccf7a0378ed8c014c3180.zip
4 files changed, 1628 insertions, 1 deletions
diff --git a/2025/captions/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main--chapters.vtt b/2025/captions/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main--chapters.vtt
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+WEBVTT
+
+
+00:02:07.200 --> 00:04:24.759
+The scope of the project
+
+00:04:24.760 --> 00:05:49.719
+Difference with Robin Templeton's project (Guile-Emacs)
+
+00:05:49.720 --> 00:07:28.039
+Progress made since last year
+
+00:07:28.040 --> 00:09:06.039
+Portable React-like GUI
+
+00:09:06.040 --> 00:11:48.699
+Demo
+
+00:11:48.700 --> 00:14:12.019
+Additional changes
+
+00:14:12.020 --> 00:17:06.199
+Other Scheme implementations
+
+00:17:06.200 --> 00:21:51.519
+GUI framework
+
+00:21:51.520 --> 00:23:14.113
+Wrapping up
diff --git a/2025/captions/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.vtt b/2025/captions/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.vtt
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@@ -0,0 +1,1183 @@
+WEBVTT captioned by sachac
+
+00:00:01.060 --> 00:00:05.639
+Hi, EmacsConf 2025. My name is Ramin Honary,
+
+00:00:05.640 --> 00:00:07.559
+and I'd like to talk to you today
+
+00:00:07.560 --> 00:00:10.399
+about my project called Schemacs
+
+00:00:10.400 --> 00:00:12.079
+which I presented last year.
+
+00:00:12.080 --> 00:00:13.879
+Back then it was called "Gypsum"
+
+00:00:13.880 --> 00:00:18.319
+and the name has since changed.
+
+00:00:18.320 --> 00:00:20.239
+So my name is Ramin Honary.
+
+00:00:20.240 --> 00:00:24.999
+I'm an Emacs enthusiast, have been since 2017 or so.
+
+00:00:25.000 --> 00:00:27.759
+I'm a full stack software developer.
+
+00:00:27.760 --> 00:00:29.300
+I love Haskell, Scheme,
+
+00:00:29.301 --> 00:00:31.433
+anything functional programming related,
+
+00:00:31.434 --> 00:00:32.959
+and of course Emacs.
+
+00:00:32.960 --> 00:00:36.199
+I started learning Scheme about three years ago,
+
+00:00:36.200 --> 00:00:37.999
+and this is my third time presenting
+
+00:00:38.000 --> 00:00:40.799
+at EmacsConf.
+
+00:00:40.800 --> 00:00:46.479
+So the Schemacs project that I'm talking to,
+
+00:00:46.480 --> 00:00:48.159
+I'm talking about to you today,
+
+00:00:48.160 --> 00:00:50.279
+was originally called "Gypsum".
+
+00:00:50.280 --> 00:00:53.359
+The reason I did not call it "Schemacs"
+
+00:00:53.360 --> 00:00:58.119
+was that the name "Schemacs" was taken on GitHub.
+
+00:00:58.120 --> 00:00:59.567
+But in the past year,
+
+00:00:59.568 --> 00:01:02.119
+I was able to get the permission
+
+00:01:02.120 --> 00:01:04.479
+of the author of GitHub's Schemacs
+
+00:01:04.480 --> 00:01:08.840
+project to name my project the same thing,
+
+00:01:08.841 --> 00:01:11.320
+even though it's a very similar project.
+
+00:01:11.321 --> 00:01:14.719
+So I changed the name.
+
+00:01:14.720 --> 00:01:19.700
+Let me see if I can quickly show the screen.
+
+00:01:19.701 --> 00:01:24.959
+So yeah, I have archived the old project.
+
+00:01:24.960 --> 00:01:27.719
+It's still there, but there's an explanation in
+
+00:01:27.720 --> 00:01:30.167
+the readme file and a screen grab
+
+00:01:30.168 --> 00:01:31.599
+of the conversation I had
+
+00:01:31.600 --> 00:01:36.119
+with the original author of GitHub Schemacs.
+
+00:01:36.120 --> 00:01:38.679
+My Schemacs is not on GitHub at all.
+
+00:01:38.680 --> 00:01:43.879
+It's only on Codeberg. So please don't get confused.
+
+00:01:43.880 --> 00:01:45.999
+But yes, I received permission
+
+00:01:46.000 --> 00:01:50.199
+to change the name and so I did.
+
+00:01:50.200 --> 00:01:52.839
+And I would like to give a quick shout-out to
+
+00:01:52.840 --> 00:01:57.239
+user "Tusharhero" for helping me with that.
+
+00:01:57.240 --> 00:02:02.639
+This person really helped make that name change happen.
+
+00:02:02.640 --> 00:02:07.199
+So back to the slides.
+
+NOTE The scope of the project
+
+00:02:07.200 --> 00:02:11.319
+And so now I'd like to clarify the scope of the project.
+
+00:02:11.320 --> 00:02:13.000
+I don't think I quite made it clear
+
+00:02:13.001 --> 00:02:14.919
+well enough last year,
+
+00:02:14.920 --> 00:02:18.400
+but... Although I'm definitely cloning
+
+00:02:18.401 --> 00:02:20.167
+the Emacs Lisp programming language,
+
+00:02:20.168 --> 00:02:25.267
+the actual scope of the Schemacs project
+
+00:02:25.268 --> 00:02:29.759
+is to make an Emacs-like app platform for Scheme.
+
+00:02:29.760 --> 00:02:32.959
+I don't consider Emacs to be a text editor.
+
+00:02:32.960 --> 00:02:38.199
+I consider Emacs to be a Lisp app platform.
+
+00:02:38.200 --> 00:02:39.839
+So it's similar to something like the
+
+00:02:39.840 --> 00:02:48.539
+World Wide Web, or Microsoft's .NET app platform, or Java.
+
+00:02:48.540 --> 00:02:52.559
+These are all examples of app platforms.
+
+00:02:52.560 --> 00:02:55.119
+I would like Schemacs to make it easy
+
+00:02:55.120 --> 00:02:59.399
+for not only people to use it for
+
+00:02:59.400 --> 00:03:03.479
+things like editing text or, you know, for
+
+00:03:03.480 --> 00:03:06.439
+using your computer through a command line
+
+00:03:06.440 --> 00:03:10.599
+or manipulating your Git repository.
+
+00:03:10.600 --> 00:03:13.159
+I'd also like you to be able to create simple
+
+00:03:13.160 --> 00:03:16.119
+GUIs or TUIs using Scheme.
+
+00:03:16.120 --> 00:03:19.319
+So that's also one of the goals of this project.
+
+00:03:19.320 --> 00:03:23.079
+It will of course have an Emacs-like text editor,
+
+00:03:23.080 --> 00:03:24.999
+and I will clone Emacs Lisp.
+
+00:03:25.000 --> 00:03:29.879
+So hopefully GNU Emacs users
+
+00:03:29.880 --> 00:03:32.779
+will feel comfortable moving over to Schemacs
+
+00:03:32.780 --> 00:03:35.679
+because they'll be able to use your init.
+
+00:03:35.680 --> 00:03:40.399
+You'll be able to use your init.el file.
+
+00:03:40.400 --> 00:03:43.239
+So configuring and scripting Schemacs
+
+00:03:43.240 --> 00:03:44.479
+should be done in Scheme.
+
+00:03:44.480 --> 00:03:47.679
+I'd like to encourage scripting in Scheme
+
+00:03:47.680 --> 00:03:51.199
+and creating new workflows and macros in Scheme.
+
+00:03:51.200 --> 00:03:54.267
+It will support Emacs Lisp depending on
+
+00:03:54.268 --> 00:03:59.319
+how much of the Emacs Lisp interpreter I can clone.
+
+00:03:59.320 --> 00:04:03.039
+That will be supported but not encouraged.
+
+00:04:03.040 --> 00:04:06.319
+But you should still be able to run your init.el.
+
+00:04:06.320 --> 00:04:08.839
+And I would like it to be good enough,
+
+00:04:08.840 --> 00:04:09.999
+this Emacs Lisp interpreter
+
+00:04:10.000 --> 00:04:12.999
+should be good enough to run packages from ELPA.
+
+00:04:13.000 --> 00:04:15.879
+Although it will probably be some time
+
+00:04:15.880 --> 00:04:17.559
+before it will be able to run
+
+00:04:17.560 --> 00:04:24.759
+something as large as Org Mode or Magit.
+
+NOTE Difference with Robin Templeton's project (Guile-Emacs)
+
+00:04:24.760 --> 00:04:27.439
+It is slightly different from the Guile-Emacs project.
+
+00:04:27.440 --> 00:04:30.333
+This is the work of Robin Templeton
+
+00:04:30.334 --> 00:04:32.219
+who presented last year.
+
+00:04:32.220 --> 00:04:36.033
+Guile-Emacs links the Guile runtime
+
+00:04:36.034 --> 00:04:38.500
+into the Emacs executable.
+
+00:04:38.501 --> 00:04:41.580
+It's not a Scheme application. Emacs,
+
+00:04:41.581 --> 00:04:44.200
+the core of Emacs is written in C.
+
+00:04:44.201 --> 00:04:48.120
+Guile, the core of Guile is written in C.
+
+00:04:48.121 --> 00:04:53.700
+What Robin Templeton has done is, at the C level, linked
+
+00:04:53.701 --> 00:04:56.833
+"libguile.so" into Emacs and then provided
+
+00:04:56.834 --> 00:04:59.500
+a programming layer where you can
+
+00:04:59.501 --> 00:05:04.759
+call the Scheme interpreter from Emacs Lisp
+
+00:05:04.760 --> 00:05:11.279
+so that you can run Scheme programs from within Emacs
+
+00:05:11.280 --> 00:05:13.919
+without having to launch a separate process
+
+00:05:13.920 --> 00:05:18.039
+and communicate over a channel such as a socket.
+
+00:05:18.040 --> 00:05:19.839
+You won't need "SLIME" or anything.
+
+00:05:19.840 --> 00:05:23.419
+The Guile interpreter is just right there inside of Emacs.
+
+00:05:23.420 --> 00:05:25.999
+But my project is not like this at all.
+
+00:05:26.000 --> 00:05:28.879
+Schemacs is written completely from the ground up
+
+00:05:28.880 --> 00:05:34.999
+in R7RS-compliant Scheme. And because it's R7RS-compliant,
+
+00:05:35.000 --> 00:05:37.999
+it's not bound to any one particular Scheme implementation,
+
+00:05:38.000 --> 00:05:39.879
+although Guile is the reference implementation.
+
+00:05:39.880 --> 00:05:42.359
+One goal of this project is to be able to run
+
+00:05:42.360 --> 00:05:49.719
+Schemacs on any R7RS-compliant Scheme implementation.
+
+NOTE Progress made since last year
+
+00:05:49.720 --> 00:05:56.259
+The work that I've done this past year mostly is internal.
+
+00:05:56.260 --> 00:06:00.939
+There's not much that you can see on the surface.
+
+00:06:00.940 --> 00:06:04.519
+But the most... One of the most important things that I
+
+00:06:04.520 --> 00:06:06.839
+did was I rewrote the parser in R7RS Scheme,
+
+00:06:06.840 --> 00:06:07.919
+so it no longer depends on
+
+00:06:07.920 --> 00:06:11.999
+the Guile regular expressions library.
+
+00:06:12.000 --> 00:06:14.959
+The parser now also provides source locations,
+
+00:06:14.960 --> 00:06:18.939
+so if an error occurs in Emacs Lisp,
+
+00:06:18.940 --> 00:06:20.567
+there will be a stack trace
+
+00:06:20.568 --> 00:06:23.633
+and it will show you where in the source code
+
+00:06:23.634 --> 00:06:28.319
+the error occured. This was not possible last year.
+
+00:06:28.320 --> 00:06:30.860
+And because it no longer depends on Guile,
+
+00:06:30.861 --> 00:06:34.520
+I can make it work on multiple Scheme implementations.
+
+00:06:34.521 --> 00:06:36.820
+So far, I've been able to get it to run on
+
+00:06:36.821 --> 00:06:38.920
+the Chibi Scheme interpreter
+
+00:06:38.921 --> 00:06:41.280
+and the Gauche Scheme interpreter, as well as
+
+00:06:41.281 --> 00:06:44.279
+Guile, which is the reference implementation.
+
+00:06:44.280 --> 00:06:48.559
+For a short time, it did work also on Chez Scheme,
+
+00:06:48.560 --> 00:06:53.179
+the Chez Scheme compiler, using Gwen Weinholt's "Akku,"
+
+00:06:53.180 --> 00:06:59.299
+which is a program that translates R7RS Scheme to R6RS Scheme.
+
+00:06:59.300 --> 00:07:04.519
+And with that translation, because Chez Scheme
+
+00:07:04.520 --> 00:07:07.319
+is pretty strictly an R6RS compiler,
+
+00:07:07.320 --> 00:07:11.519
+the translation allows you to run R7RS programs.
+
+00:07:11.520 --> 00:07:15.219
+But due to some change, I'm not sure where,
+
+00:07:15.220 --> 00:07:17.119
+it may have been changed in the Schemacs source code,
+
+00:07:17.120 --> 00:07:19.639
+or it may have been a change to Akku,
+
+00:07:19.640 --> 00:07:21.239
+but it no longer builds on Chez.
+
+00:07:21.240 --> 00:07:28.039
+It did at one point. I'd like to try to fix that.
+
+NOTE Portable React-like GUI
+
+00:07:28.040 --> 00:07:30.719
+The second most important thing that I've worked on is a
+
+00:07:30.720 --> 00:07:36.439
+portable React-like GUI. And so React,
+
+00:07:36.440 --> 00:07:40.999
+for anyone who has done web programming,
+
+00:07:41.000 --> 00:07:46.839
+is a very popular framework for programming web applications.
+
+00:07:46.840 --> 00:07:48.233
+And I've provided something
+
+00:07:48.234 --> 00:07:49.599
+very similar to that in Scheme now.
+
+00:07:49.600 --> 00:07:54.679
+So it works. I have constructed a DOM data structure
+
+00:07:54.680 --> 00:07:59.079
+in Scheme. It's just an ordinary Scheme data structure.
+
+00:07:59.080 --> 00:08:01.519
+It works like the web's "Document Object Model"
+
+00:08:01.520 --> 00:08:03.960
+or the "DOM" data structure.
+
+00:08:03.961 --> 00:08:09.999
+And then this Scheme DOM data structure can be rendered
+
+00:08:10.000 --> 00:08:13.059
+using any GUI framework that is convenient
+
+00:08:13.060 --> 00:08:16.239
+for the Scheme implementation that you're targeting.
+
+00:08:16.240 --> 00:08:18.879
+And you should be able to implement
+
+00:08:18.880 --> 00:08:22.919
+also rendering to a CLI as well.
+
+00:08:22.920 --> 00:08:24.600
+The current reference implementation
+
+00:08:24.601 --> 00:08:27.759
+is using a framework called Guile-GI.
+
+00:08:27.760 --> 00:08:30.639
+This is the "GObject Introspection" framework.
+
+00:08:30.640 --> 00:08:31.967
+It's a very simple
+
+00:08:31.968 --> 00:08:36.119
+GObject Introspection framework for Guile,
+
+00:08:36.120 --> 00:08:40.979
+and it binds to GTK3 on Linux.
+
+00:08:40.980 --> 00:08:42.919
+There's a similar framework called G-Golf
+
+00:08:42.920 --> 00:08:48.359
+which I'd like to begin using as well, also for Guile.
+
+00:08:48.360 --> 00:08:53.739
+G-Golf seems to be a bit more well-maintained, a bit...
+
+00:08:53.740 --> 00:08:57.799
+It has better features. G-Golf may be a
+
+00:08:57.800 --> 00:09:00.039
+better rendering backend for the reference
+
+00:09:00.040 --> 00:09:06.039
+implementation, but I would like to provide both.
+
+NOTE Demo
+
+00:09:06.040 --> 00:09:07.933
+I will give a demo of this now.
+
+00:09:07.934 --> 00:09:12.999
+Unfortunately not a whole lot
+
+00:09:13.000 --> 00:09:18.139
+to see compared to last year.
+
+00:09:18.140 --> 00:09:20.639
+First thing I'd like to show is
+
+00:09:20.640 --> 00:09:24.279
+that I now have a Makefile. You can look inside
+
+00:09:24.280 --> 00:09:28.400
+this Makefile and if you're able to read a Makefile,
+
+00:09:28.401 --> 00:09:31.967
+you can see that I have several targets now available.
+
+00:09:31.968 --> 00:09:35.000
+You can build Schemacs for Guile,
+
+00:09:35.001 --> 00:09:36.667
+you can build Schemacs for Gambit,
+
+00:09:36.668 --> 00:09:40.333
+or Stklos, or Chicken, or Chez,
+
+00:09:40.334 --> 00:09:42.900
+although none of these (except for Guile)
+
+00:09:42.901 --> 00:09:51.167
+currently works. These targets will actually
+
+00:09:51.168 --> 00:09:56.000
+build the source code, but then you would have to
+
+00:09:56.001 --> 00:09:59.433
+load it into the REPL separately.
+
+00:09:59.434 --> 00:10:02.467
+There are targets for launching
+
+00:10:02.468 --> 00:10:06.467
+a Gauche REPL and a Chibi REPL.
+
+00:10:06.468 --> 00:10:10.867
+You can also run the Emacs Lisp tests
+
+00:10:10.868 --> 00:10:13.067
+in Gauche and Chibi.
+
+00:10:13.068 --> 00:10:19.079
+You can also start a Guile REPL through this Makefile.
+
+00:10:19.080 --> 00:10:27.499
+So I will do that right now in the shell.
+
+00:10:27.500 --> 00:10:31.833
+(...make the text larger...there we go...)
+
+00:10:31.834 --> 00:10:38.479
+OK, so we have this directory of the source code.
+
+00:10:38.480 --> 00:10:44.559
+Let's just begin by running "guile.sh".
+
+00:10:44.560 --> 00:10:52.600
+This will launch a REPL and you can load "main-guile".
+
+00:10:52.601 --> 00:10:59.719
+This will launch the GUI. This is the basic
+
+00:10:59.720 --> 00:11:04.800
+proof of concept GUI that uses Guile-GI.
+
+00:11:04.801 --> 00:11:10.519
+So it may be hard to see.
+
+00:11:10.520 --> 00:11:14.559
+I cannot change the size of the text yet.
+
+00:11:14.560 --> 00:11:17.333
+I've implemented the M-: feature
+
+00:11:17.334 --> 00:11:24.067
+where you can eval in a minibuffer some Scheme code.
+
+00:11:24.068 --> 00:11:34.439
+(string-append "hello" ...)
+
+00:11:34.440 --> 00:11:38.279
+It outputs the result in the buffer.
+
+00:11:38.280 --> 00:11:40.959
+This is basically the "*Messages*" buffer.
+
+00:11:40.960 --> 00:11:42.619
+And that's all the more that I have.
+
+00:11:42.620 --> 00:11:45.479
+This is the same state it was in last year.
+
+00:11:45.480 --> 00:11:48.699
+It hasn't changed a whole lot since back then.
+
+NOTE Additional changes
+
+00:11:48.700 --> 00:11:52.819
+But I have made additional changes.
+
+00:11:52.820 --> 00:12:05.379
+So first of all, you can run
+
+00:12:05.380 --> 00:12:10.200
+(let me just go back into the Guile)... you can
+
+00:12:10.201 --> 00:12:16.619
+run the Emacs Lisp interpreter tests, so "elisp-tests".
+
+00:12:16.620 --> 00:12:18.919
+As you can see, it gives you a stack trace.
+
+00:12:18.920 --> 00:12:22.039
+So this is an error that I've been able to reproduce.
+
+00:12:22.040 --> 00:12:24.599
+I know exactly what the cause of this error is.
+
+00:12:24.600 --> 00:12:27.599
+It is not finding a variable
+
+00:12:27.600 --> 00:12:30.319
+because the closure is not correctly
+
+00:12:30.320 --> 00:12:35.199
+capturing its environment. So there should be a variable
+
+00:12:35.200 --> 00:12:38.719
+in the closure, but that variable has not been captured
+
+00:12:38.720 --> 00:12:43.459
+and so it is causing an error.
+
+00:12:43.460 --> 00:12:48.080
+It is currently loading "byte-run.el".
+
+00:12:48.081 --> 00:12:49.820
+Let me show you what code that is here.
+
+00:12:49.821 --> 00:12:53.500
+So I've copied into the source repository
+
+00:12:53.501 --> 00:12:58.760
+for Schemacs some of the Elisp code from GNU Emacs.
+
+00:12:58.761 --> 00:13:04.420
+So I have this "subr.el".
+
+00:13:04.421 --> 00:13:09.860
+This declares most of the core of Emacs Lisp
+
+00:13:09.861 --> 00:13:12.860
+that's not written in C.
+
+00:13:12.861 --> 00:13:18.999
+There's also "byte-run.el". Schemacs Emacs Lisp can now
+
+00:13:19.000 --> 00:13:24.379
+evaluate this. This is where functions like "defun" are
+
+00:13:24.380 --> 00:13:28.359
+defined, and "defmacro". So as you can see,
+
+00:13:28.360 --> 00:13:30.799
+defun itself is a defmacro defined right here.
+
+00:13:30.800 --> 00:13:34.859
+It's written in Emacs Lisp itself,
+
+00:13:34.860 --> 00:13:37.719
+defined in terms of defalias.
+
+00:13:37.720 --> 00:13:40.239
+So I can evaluate "byte-run",
+
+00:13:40.240 --> 00:13:42.739
+I can evaluate "macroexp",
+
+00:13:42.740 --> 00:13:46.019
+and the failure occurs somewhere in "subr.el".
+
+00:13:46.020 --> 00:13:48.959
+Although if you look at the stack trace,
+
+00:13:48.960 --> 00:13:51.159
+it doesn't provide all the necessary information.
+
+00:13:51.160 --> 00:13:56.439
+So it appears to be happening in byte-run.el.
+
+00:13:56.440 --> 00:14:00.619
+Really, it's an error that's occurring inside of a macro,
+
+00:14:00.620 --> 00:14:05.799
+and the macro call site is somewhere in subr.el.
+
+00:14:05.800 --> 00:14:08.639
+Anyway, take note of this stack trace.
+
+00:14:08.640 --> 00:14:12.019
+This was run from within Guile.
+
+NOTE Other Scheme implementations
+
+00:14:12.020 --> 00:14:14.199
+Now what I've done this past year
+
+00:14:14.200 --> 00:14:19.479
+is make it work on other Scheme implementations.
+
+00:14:19.480 --> 00:14:23.833
+Use "make" to launch a Gauche REPL.
+
+00:14:23.834 --> 00:14:25.999
+Now I'm inside of Gauche.
+
+00:14:26.000 --> 00:14:27.233
+This is the command that
+
+00:14:27.234 --> 00:14:30.079
+you would use to launch a Gauche REPL.
+
+00:14:30.080 --> 00:14:38.199
+And I can load the same program (load "elisp-tests.scm").
+
+00:14:38.200 --> 00:14:42.759
+You get the exact same result as Guile.
+
+00:14:42.760 --> 00:14:45.799
+So we have two different Scheme implementations
+
+00:14:45.800 --> 00:14:46.799
+producing the same result.
+
+00:14:46.800 --> 00:14:53.079
+Let's try "make" a Chibi REPL. This is Chibi Scheme.
+
+00:14:53.080 --> 00:15:00.219
+And you can (load "elisp-tests.scm").
+
+00:15:00.220 --> 00:15:04.080
+Chibi is a bit slower, but you get the exact same result.
+
+00:15:04.081 --> 00:15:07.400
+So we have three different Scheme implementations
+
+00:15:07.401 --> 00:15:11.539
+all running Emacs Lisp,
+
+00:15:11.540 --> 00:15:14.039
+and all producing the same result.
+
+00:15:14.040 --> 00:15:14.767
+I think that's...
+
+00:15:14.768 --> 00:15:17.099
+I'm fairly proud of that accomplishment.
+
+00:15:17.100 --> 00:15:21.200
+I was able to get the code written to the point
+
+00:15:21.201 --> 00:15:24.879
+where it actually runs on multiple implementations.
+
+00:15:24.880 --> 00:15:30.599
+You can also try making it for other Scheme compilers
+
+00:15:30.600 --> 00:15:35.959
+like "schemacs-mitscheme" for example,
+
+00:15:35.960 --> 00:15:40.019
+but this will fail.
+
+00:15:40.020 --> 00:15:46.679
+You can try building it for "schemacs-chez",
+
+00:15:46.680 --> 00:15:51.800
+Let's try Chez... there we go.
+
+00:15:51.801 --> 00:15:54.233
+And it will use Akku,
+
+00:15:54.234 --> 00:15:58.000
+and it will fetch the necessary dependencies.
+
+00:15:58.001 --> 00:16:03.433
+But it fails, and I haven't been able to
+
+00:16:03.434 --> 00:16:05.959
+debug that quite yet.
+
+00:16:05.960 --> 00:16:13.139
+Stklos fails for a similar reason.
+
+00:16:13.140 --> 00:16:21.699
+Gambit... Chicken still doesn't build all the way yet.
+
+00:16:21.700 --> 00:16:27.120
+The Makefile at least has places for it.
+
+00:16:27.121 --> 00:16:30.967
+If anyone can help me out and get Schemacs to compile
+
+00:16:30.968 --> 00:16:32.733
+on these other Scheme implementations,
+
+00:16:32.734 --> 00:16:34.000
+I'd appreciate it.
+
+00:16:34.001 --> 00:16:35.467
+I can probably figure it out myself,
+
+00:16:35.468 --> 00:16:37.000
+but that will take more time.
+
+00:16:37.001 --> 00:16:40.120
+And let me just show you quickly
+
+00:16:40.121 --> 00:16:41.720
+the test program.
+
+00:16:41.721 --> 00:16:44.500
+Basically this is the Emacs Lisp test program
+
+00:16:44.501 --> 00:16:48.580
+that I was just running, and it produces an error.
+
+00:16:48.581 --> 00:16:53.220
+All it does is it loads these files here in this order,
+
+00:16:53.221 --> 00:16:55.180
+and it fails right around here.
+
+00:16:55.181 --> 00:16:58.319
+So it's able to load these two.
+
+00:16:58.320 --> 00:17:01.360
+And yeah, that's what I've accomplished
+
+00:17:01.361 --> 00:17:06.199
+on the Emacs Lisp side of things.
+
+NOTE GUI framework
+
+00:17:06.200 --> 00:17:09.119
+The next thing I want to show you is the GUI framework
+
+00:17:09.120 --> 00:17:13.199
+that I've written, which I'm fairly proud of so far.
+
+00:17:13.200 --> 00:17:15.833
+So this is the GUI framework
+
+00:17:15.834 --> 00:17:19.919
+(oops, I better launch it again, OK...)
+
+00:17:19.920 --> 00:17:22.600
+and let me show you the tests.
+
+00:17:22.601 --> 00:17:25.700
+So here in the tests, you can start to see
+
+00:17:25.701 --> 00:17:29.067
+some examples of how you use it.
+
+00:17:29.068 --> 00:17:31.833
+So here is a "counter" test, and this is kind of like
+
+00:17:31.834 --> 00:17:35.940
+the "hello world" of reactive programming frameworks,
+
+00:17:35.941 --> 00:17:38.000
+where you have a state variable,
+
+00:17:38.200 --> 00:17:41.659
+sometimes called an "observable."
+
+00:17:41.660 --> 00:17:43.439
+I'm calling it "number",
+
+00:17:43.440 --> 00:17:47.838
+and it uses "=" to check if the state has updated.
+
+00:17:49.000 --> 00:17:52.820
+If an update occurs and the new value is different
+
+00:17:52.821 --> 00:17:55.032
+from the old value according to the "=" function,
+
+00:17:55.033 --> 00:17:59.232
+then trigger a state update in the GUI as well.
+
+00:17:59.233 --> 00:18:03.099
+Initialize to 0, bound to "number".
+
+00:18:03.100 --> 00:18:06.132
+I have a "button" function which creates a simple button.
+
+00:18:06.133 --> 00:18:07.832
+It takes a label and an action.
+
+00:18:07.833 --> 00:18:10.865
+Right here you see the "div" command.
+
+00:18:10.866 --> 00:18:13.039
+This is what creates a "div".
+
+00:18:13.040 --> 00:18:18.999
+Using the properties, I describe that this div is a
+
+00:18:19.000 --> 00:18:22.599
+push-button and the "on-button-push" is an action.
+
+00:18:22.600 --> 00:18:25.265
+The action is to update the variable "number"
+
+00:18:25.266 --> 00:18:30.399
+using whatever function or lambda was provided to it.
+
+00:18:30.400 --> 00:18:31.965
+And then the content that you see on screen,
+
+00:18:31.966 --> 00:18:34.033
+that you will see on screen when it runs,
+
+00:18:34.034 --> 00:18:38.667
+is here. You create a "div-pack cut-vertical".
+
+00:18:38.668 --> 00:18:43.233
+You declare two buttons and then you declare
+
+00:18:43.234 --> 00:18:46.800
+this "use-vars" which will take the content
+
+00:18:46.801 --> 00:18:48.833
+of this variable here, this observable,
+
+00:18:48.834 --> 00:18:51.733
+and place it into the GUI next to the buttons here.
+
+00:18:51.734 --> 00:18:54.233
+So what you will see on screen is
+
+00:18:54.234 --> 00:18:57.067
+a "plus" button which increments,
+
+00:18:57.068 --> 00:18:59.320
+here is the "increment" function,
+
+00:18:59.321 --> 00:19:02.779
+a "minus" button which decrements,
+
+00:19:02.780 --> 00:19:05.479
+and then the content of the variable that is
+
+00:19:05.480 --> 00:19:09.699
+being incremented and decremented.
+
+00:19:09.700 --> 00:19:11.865
+The advantage of these reactive frameworks is that
+
+00:19:11.866 --> 00:19:13.065
+with very few lines of code
+
+00:19:13.066 --> 00:19:16.032
+you can create fairly complex interfaces.
+
+00:19:16.033 --> 00:19:18.599
+The less code you have to write,
+
+00:19:18.600 --> 00:19:21.232
+the fewer chances you have to make mistakes.
+
+00:19:21.233 --> 00:19:23.967
+So let's just run this program.
+
+00:19:23.968 --> 00:19:33.292
+This was the "counter-test."
+
+00:19:33.293 --> 00:19:35.199
+And that is the debug window. Here's the "counter."
+
+00:19:35.200 --> 00:19:38.452
+I'm sorry it's not much larger than this.
+
+00:19:38.453 --> 00:19:41.132
+But here's the "plus" button, the "minus" button,
+
+00:19:41.133 --> 00:19:43.919
+and here's the "number", 0.
+
+00:19:43.920 --> 00:19:49.792
+And I can increment or decrement as much as I like.
+
+00:19:49.793 --> 00:19:51.100
+So yeah, that's kind of the hello world
+
+00:19:51.101 --> 00:19:55.239
+of reactive programming. (I'll reboot the REPL...)
+
+00:19:55.240 --> 00:19:58.599
+The next thing I want to show you is this layout test.
+
+00:19:58.600 --> 00:20:02.192
+And I'll just run the test first.
+
+00:20:02.193 --> 00:20:05.019
+So here we have basically
+
+00:20:05.020 --> 00:20:08.539
+a tiling window manager kind of thing,
+
+00:20:08.540 --> 00:20:11.279
+where you can resize the tiles
+
+00:20:11.280 --> 00:20:12.933
+and then by clicking on these buttons here,
+
+00:20:12.934 --> 00:20:16.939
+you can change the layout.
+
+00:20:16.940 --> 00:20:20.167
+So you can do two on the right,
+
+00:20:20.168 --> 00:20:27.100
+two up above, or three up above. So, yeah.
+
+00:20:27.101 --> 00:20:30.267
+Those tiling windows, as you can see,
+
+00:20:30.268 --> 00:20:33.000
+once I work this branch into the main branch of Schemacs,
+
+00:20:33.001 --> 00:20:35.273
+I can use that to implement
+
+00:20:35.274 --> 00:20:38.265
+the split window functionality for Schemacs,
+
+00:20:38.266 --> 00:20:42.466
+the editor. So here's what this split...
+
+00:20:42.466 --> 00:20:44.865
+Here's the layout test that you just saw.
+
+00:20:44.866 --> 00:20:46.732
+Let me make it a bit smaller
+
+00:20:46.733 --> 00:20:48.199
+so that it all fits on one screen.
+
+00:20:48.200 --> 00:20:51.365
+So basically we have the "button" command again,
+
+00:20:51.366 --> 00:20:54.132
+and then these are the button actions
+
+00:20:54.133 --> 00:20:56.999
+which basically just changes the layout,
+
+00:20:57.000 --> 00:21:01.459
+and then I have the layout. So this layout is a "div."
+
+00:21:01.460 --> 00:21:04.919
+The first div just places three buttons in a row.
+
+00:21:04.920 --> 00:21:07.532
+The next layout is a div within a div.
+
+00:21:07.533 --> 00:21:12.999
+So we have one div which places the button
+
+00:21:13.000 --> 00:21:18.632
+called "two right" buttons, and the div above it,
+
+00:21:18.633 --> 00:21:21.492
+which places the "three in a row" button
+
+00:21:21.493 --> 00:21:22.660
+or the "two above" buttons.
+
+00:21:22.661 --> 00:21:26.000
+And here's the next... So there's three different
+
+00:21:26.001 --> 00:21:30.600
+layouts, and clicking on one of their associated buttons
+
+00:21:30.601 --> 00:21:32.100
+will just change the layout.
+
+00:21:32.101 --> 00:21:33.433
+As you can see, very little code
+
+00:21:33.434 --> 00:21:38.500
+to create a somewhat complex user interface.
+
+00:21:38.501 --> 00:21:42.867
+That's the advantage of using reactive or declarative
+
+00:21:42.868 --> 00:21:44.233
+UI programming paradigms.
+
+00:21:44.234 --> 00:21:47.232
+So yeah, this has not been merged into Schemacs
+
+00:21:47.233 --> 00:21:48.700
+at the time of this recording,
+
+00:21:48.701 --> 00:21:51.519
+but will be soon hopefully.
+
+NOTE Wrapping up
+
+00:21:51.520 --> 00:21:55.165
+So yeah, I think I've already gone on for 20 minutes.
+
+00:21:55.166 --> 00:21:59.139
+So I guess I'll just end my presentation here.
+
+00:21:59.140 --> 00:22:00.465
+I have lots more to talk about.
+
+00:22:00.466 --> 00:22:03.979
+I guess I will say one last thing before I go:
+
+00:22:03.980 --> 00:22:07.065
+that I would very much like for others
+
+00:22:07.066 --> 00:22:09.199
+to try and contribute to this project.
+
+00:22:09.200 --> 00:22:14.232
+I will do my best to try and help teach anybody
+
+00:22:14.233 --> 00:22:16.832
+or work with anybody, especially even
+
+00:22:16.833 --> 00:22:18.599
+if you don't have much experience with Scheme.
+
+00:22:18.600 --> 00:22:22.759
+I'd like to help everybody try to contribute.
+
+00:22:22.760 --> 00:22:26.239
+Basically I want to get this proof of concept working.
+
+00:22:26.240 --> 00:22:30.673
+I want to get a stable user interface up and running,
+
+00:22:30.674 --> 00:22:33.065
+and then we can start working on
+
+00:22:33.066 --> 00:22:36.699
+improving the Emacs Lisp interpreter all together.
+
+00:22:36.700 --> 00:22:41.065
+There are close to 1,400 built-in functions
+
+00:22:41.066 --> 00:22:43.659
+which need to be implemented.
+
+00:22:43.660 --> 00:22:44.965
+We don't need to get all of them
+
+00:22:44.966 --> 00:22:48.465
+in order to be able to run probably most of ELPA,
+
+00:22:48.466 --> 00:22:50.865
+but as much as possible.
+
+00:22:50.866 --> 00:22:54.799
+We would like to clone Emacs Lisp and I need help.
+
+00:22:54.800 --> 00:23:02.579
+So get a hold of me. My project is on Codeberg.
+
+00:23:02.580 --> 00:23:06.919
+Well, (oh, I can't show this here),
+
+00:23:06.920 --> 00:23:14.113
+but I will end it there. Thank you for listening.
diff --git a/2025/info/schemacs-after.md b/2025/info/schemacs-after.md
index d511e981..595a5d18 100644
--- a/2025/info/schemacs-after.md
+++ b/2025/info/schemacs-after.md
@@ -1,6 +1,410 @@
 <!-- Automatically generated by emacsconf-publish-after-page -->
 
 
+<div class="transcript transcript-mainVideo"><a name="schemacs-mainVideo-transcript"></a><h1>Transcript</h1>
+
+[[!template text="""Hi, EmacsConf 2025. My name is Ramin Honary,""" start="00:00:01.060" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and I'd like to talk to you today""" start="00:00:05.640" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""about my project called Schemacs""" start="00:00:07.560" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""which I presented last year.""" start="00:00:10.400" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Back then it was called &quot;Gypsum&quot;""" start="00:00:12.080" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and the name has since changed.""" start="00:00:13.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So my name is Ramin Honary.""" start="00:00:18.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'm an Emacs enthusiast, have been since 2017 or so.""" start="00:00:20.240" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'm a full stack software developer.""" start="00:00:25.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I love Haskell, Scheme,""" start="00:00:27.760" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""anything functional programming related,""" start="00:00:29.301" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and of course Emacs.""" start="00:00:31.434" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I started learning Scheme about three years ago,""" start="00:00:32.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and this is my third time presenting""" start="00:00:36.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""at EmacsConf.""" start="00:00:38.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So the Schemacs project that I'm talking to,""" start="00:00:40.800" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'm talking about to you today,""" start="00:00:46.480" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""was originally called &quot;Gypsum&quot;.""" start="00:00:48.160" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The reason I did not call it &quot;Schemacs&quot;""" start="00:00:50.280" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""was that the name &quot;Schemacs&quot; was taken on GitHub.""" start="00:00:53.360" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But in the past year,""" start="00:00:58.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I was able to get the permission""" start="00:00:59.568" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""of the author of GitHub's Schemacs""" start="00:01:02.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""project to name my project the same thing,""" start="00:01:04.480" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""even though it's a very similar project.""" start="00:01:08.841" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So I changed the name.""" start="00:01:11.321" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Let me see if I can quickly show the screen.""" start="00:01:14.720" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So yeah, I have archived the old project.""" start="00:01:19.701" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It's still there, but there's an explanation in""" start="00:01:24.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the readme file and a screen grab""" start="00:01:27.720" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""of the conversation I had""" start="00:01:30.168" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""with the original author of GitHub Schemacs.""" start="00:01:31.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""My Schemacs is not on GitHub at all.""" start="00:01:36.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It's only on Codeberg. So please don't get confused.""" start="00:01:38.680" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But yes, I received permission""" start="00:01:43.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""to change the name and so I did.""" start="00:01:46.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And I would like to give a quick shout-out to""" start="00:01:50.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""user &quot;Tusharhero&quot; for helping me with that.""" start="00:01:52.840" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This person really helped make that name change happen.""" start="00:01:57.240" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So back to the slides.""" start="00:02:02.640" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""The scope of the project""" start="00:02:07.200" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""And so now I'd like to clarify the scope of the project.""" start="00:02:07.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I don't think I quite made it clear""" start="00:02:11.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""well enough last year,""" start="00:02:13.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""but... Although I'm definitely cloning""" start="00:02:14.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the Emacs Lisp programming language,""" start="00:02:18.401" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the actual scope of the Schemacs project""" start="00:02:20.168" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""is to make an Emacs-like app platform for Scheme.""" start="00:02:25.268" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I don't consider Emacs to be a text editor.""" start="00:02:29.760" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I consider Emacs to be a Lisp app platform.""" start="00:02:32.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So it's similar to something like the""" start="00:02:38.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""World Wide Web, or Microsoft's .NET app platform, or Java.""" start="00:02:39.840" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""These are all examples of app platforms.""" start="00:02:48.540" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I would like Schemacs to make it easy""" start="00:02:52.560" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""for not only people to use it for""" start="00:02:55.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""things like editing text or, you know, for""" start="00:02:59.400" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""using your computer through a command line""" start="00:03:03.480" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""or manipulating your Git repository.""" start="00:03:06.440" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'd also like you to be able to create simple""" start="00:03:10.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""GUIs or TUIs using Scheme.""" start="00:03:13.160" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So that's also one of the goals of this project.""" start="00:03:16.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It will of course have an Emacs-like text editor,""" start="00:03:19.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and I will clone Emacs Lisp.""" start="00:03:23.080" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So hopefully GNU Emacs users""" start="00:03:25.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""will feel comfortable moving over to Schemacs""" start="00:03:29.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""because they'll be able to use your init.""" start="00:03:32.780" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You'll be able to use your init.el file.""" start="00:03:35.680" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So configuring and scripting Schemacs""" start="00:03:40.400" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""should be done in Scheme.""" start="00:03:43.240" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'd like to encourage scripting in Scheme""" start="00:03:44.480" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and creating new workflows and macros in Scheme.""" start="00:03:47.680" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It will support Emacs Lisp depending on""" start="00:03:51.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""how much of the Emacs Lisp interpreter I can clone.""" start="00:03:54.268" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""That will be supported but not encouraged.""" start="00:03:59.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But you should still be able to run your init.el.""" start="00:04:03.040" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And I would like it to be good enough,""" start="00:04:06.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""this Emacs Lisp interpreter""" start="00:04:08.840" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""should be good enough to run packages from ELPA.""" start="00:04:10.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Although it will probably be some time""" start="00:04:13.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""before it will be able to run""" start="00:04:15.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""something as large as Org Mode or Magit.""" start="00:04:17.560" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""Difference with Robin Templeton's project (Guile-Emacs)""" start="00:04:24.760" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""It is slightly different from the Guile-Emacs project.""" start="00:04:24.760" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This is the work of Robin Templeton""" start="00:04:27.440" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""who presented last year.""" start="00:04:30.334" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Guile-Emacs links the Guile runtime""" start="00:04:32.220" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""into the Emacs executable.""" start="00:04:36.034" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It's not a Scheme application. Emacs,""" start="00:04:38.501" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the core of Emacs is written in C.""" start="00:04:41.581" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Guile, the core of Guile is written in C.""" start="00:04:44.201" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""What Robin Templeton has done is, at the C level, linked""" start="00:04:48.121" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""&quot;libguile.so&quot; into Emacs and then provided""" start="00:04:53.701" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""a programming layer where you can""" start="00:04:56.834" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""call the Scheme interpreter from Emacs Lisp""" start="00:04:59.501" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""so that you can run Scheme programs from within Emacs""" start="00:05:04.760" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""without having to launch a separate process""" start="00:05:11.280" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and communicate over a channel such as a socket.""" start="00:05:13.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You won't need &quot;SLIME&quot; or anything.""" start="00:05:18.040" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The Guile interpreter is just right there inside of Emacs.""" start="00:05:19.840" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But my project is not like this at all.""" start="00:05:23.420" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Schemacs is written completely from the ground up""" start="00:05:26.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""in R7RS-compliant Scheme. And because it's R7RS-compliant,""" start="00:05:28.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""it's not bound to any one particular Scheme implementation,""" start="00:05:35.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""although Guile is the reference implementation.""" start="00:05:38.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""One goal of this project is to be able to run""" start="00:05:39.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Schemacs on any R7RS-compliant Scheme implementation.""" start="00:05:42.360" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""Progress made since last year""" start="00:05:49.720" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""The work that I've done this past year mostly is internal.""" start="00:05:49.720" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""There's not much that you can see on the surface.""" start="00:05:56.260" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But the most... One of the most important things that I""" start="00:06:00.940" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""did was I rewrote the parser in R7RS Scheme,""" start="00:06:04.520" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""so it no longer depends on""" start="00:06:06.840" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the Guile regular expressions library.""" start="00:06:07.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The parser now also provides source locations,""" start="00:06:12.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""so if an error occurs in Emacs Lisp,""" start="00:06:14.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""there will be a stack trace""" start="00:06:18.940" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and it will show you where in the source code""" start="00:06:20.568" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the error occured. This was not possible last year.""" start="00:06:23.634" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And because it no longer depends on Guile,""" start="00:06:28.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I can make it work on multiple Scheme implementations.""" start="00:06:30.861" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So far, I've been able to get it to run on""" start="00:06:34.521" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the Chibi Scheme interpreter""" start="00:06:36.821" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and the Gauche Scheme interpreter, as well as""" start="00:06:38.921" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Guile, which is the reference implementation.""" start="00:06:41.281" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""For a short time, it did work also on Chez Scheme,""" start="00:06:44.280" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the Chez Scheme compiler, using Gwen Weinholt's &quot;Akku,&quot;""" start="00:06:48.560" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""which is a program that translates R7RS Scheme to R6RS Scheme.""" start="00:06:53.180" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And with that translation, because Chez Scheme""" start="00:06:59.300" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""is pretty strictly an R6RS compiler,""" start="00:07:04.520" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the translation allows you to run R7RS programs.""" start="00:07:07.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But due to some change, I'm not sure where,""" start="00:07:11.520" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""it may have been changed in the Schemacs source code,""" start="00:07:15.220" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""or it may have been a change to Akku,""" start="00:07:17.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""but it no longer builds on Chez.""" start="00:07:19.640" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It did at one point. I'd like to try to fix that.""" start="00:07:21.240" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""Portable React-like GUI""" start="00:07:28.040" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""The second most important thing that I've worked on is a""" start="00:07:28.040" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""portable React-like GUI. And so React,""" start="00:07:30.720" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""for anyone who has done web programming,""" start="00:07:36.440" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""is a very popular framework for programming web applications.""" start="00:07:41.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And I've provided something""" start="00:07:46.840" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""very similar to that in Scheme now.""" start="00:07:48.234" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So it works. I have constructed a DOM data structure""" start="00:07:49.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""in Scheme. It's just an ordinary Scheme data structure.""" start="00:07:54.680" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It works like the web's &quot;Document Object Model&quot;""" start="00:07:59.080" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""or the &quot;DOM&quot; data structure.""" start="00:08:01.520" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And then this Scheme DOM data structure can be rendered""" start="00:08:03.961" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""using any GUI framework that is convenient""" start="00:08:10.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""for the Scheme implementation that you're targeting.""" start="00:08:13.060" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And you should be able to implement""" start="00:08:16.240" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""also rendering to a CLI as well.""" start="00:08:18.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The current reference implementation""" start="00:08:22.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""is using a framework called Guile-GI.""" start="00:08:24.601" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This is the &quot;GObject Introspection&quot; framework.""" start="00:08:27.760" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It's a very simple""" start="00:08:30.640" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""GObject Introspection framework for Guile,""" start="00:08:31.968" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and it binds to GTK3 on Linux.""" start="00:08:36.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""There's a similar framework called G-Golf""" start="00:08:40.980" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""which I'd like to begin using as well, also for Guile.""" start="00:08:42.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""G-Golf seems to be a bit more well-maintained, a bit...""" start="00:08:48.360" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It has better features. G-Golf may be a""" start="00:08:53.740" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""better rendering backend for the reference""" start="00:08:57.800" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""implementation, but I would like to provide both.""" start="00:09:00.040" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""Demo""" start="00:09:06.040" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""I will give a demo of this now.""" start="00:09:06.040" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Unfortunately not a whole lot""" start="00:09:07.934" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""to see compared to last year.""" start="00:09:13.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""First thing I'd like to show is""" start="00:09:18.140" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""that I now have a Makefile. You can look inside""" start="00:09:20.640" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""this Makefile and if you're able to read a Makefile,""" start="00:09:24.280" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""you can see that I have several targets now available.""" start="00:09:28.401" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You can build Schemacs for Guile,""" start="00:09:31.968" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""you can build Schemacs for Gambit,""" start="00:09:35.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""or Stklos, or Chicken, or Chez,""" start="00:09:36.668" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""although none of these (except for Guile)""" start="00:09:40.334" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""currently works. These targets will actually""" start="00:09:42.901" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""build the source code, but then you would have to""" start="00:09:51.168" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""load it into the REPL separately.""" start="00:09:56.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""There are targets for launching""" start="00:09:59.434" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""a Gauche REPL and a Chibi REPL.""" start="00:10:02.468" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You can also run the Emacs Lisp tests""" start="00:10:06.468" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""in Gauche and Chibi.""" start="00:10:10.868" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You can also start a Guile REPL through this Makefile.""" start="00:10:13.068" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So I will do that right now in the shell.""" start="00:10:19.080" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""(...make the text larger...there we go...)""" start="00:10:27.500" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""OK, so we have this directory of the source code.""" start="00:10:31.834" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Let's just begin by running &quot;guile.sh&quot;.""" start="00:10:38.480" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This will launch a REPL and you can load &quot;main-guile&quot;.""" start="00:10:44.560" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This will launch the GUI. This is the basic""" start="00:10:52.601" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""proof of concept GUI that uses Guile-GI.""" start="00:10:59.720" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So it may be hard to see.""" start="00:11:04.801" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I cannot change the size of the text yet.""" start="00:11:10.520" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I've implemented the M-: feature""" start="00:11:14.560" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""where you can eval in a minibuffer some Scheme code.""" start="00:11:17.334" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""(string-append &quot;hello&quot; ...)""" start="00:11:24.068" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It outputs the result in the buffer.""" start="00:11:34.440" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This is basically the &quot;\*Messages\*&quot; buffer.""" start="00:11:38.280" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And that's all the more that I have.""" start="00:11:40.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This is the same state it was in last year.""" start="00:11:42.620" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It hasn't changed a whole lot since back then.""" start="00:11:45.480" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""Additional changes""" start="00:11:48.700" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""But I have made additional changes.""" start="00:11:48.700" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So first of all, you can run""" start="00:11:52.820" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""(let me just go back into the Guile)... you can""" start="00:12:05.380" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""run the Emacs Lisp interpreter tests, so &quot;elisp-tests&quot;.""" start="00:12:10.201" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""As you can see, it gives you a stack trace.""" start="00:12:16.620" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So this is an error that I've been able to reproduce.""" start="00:12:18.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I know exactly what the cause of this error is.""" start="00:12:22.040" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It is not finding a variable""" start="00:12:24.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""because the closure is not correctly""" start="00:12:27.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""capturing its environment. So there should be a variable""" start="00:12:30.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""in the closure, but that variable has not been captured""" start="00:12:35.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and so it is causing an error.""" start="00:12:38.720" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It is currently loading &quot;byte-run.el&quot;.""" start="00:12:43.460" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Let me show you what code that is here.""" start="00:12:48.081" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So I've copied into the source repository""" start="00:12:49.821" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""for Schemacs some of the Elisp code from GNU Emacs.""" start="00:12:53.501" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So I have this &quot;subr.el&quot;.""" start="00:12:58.761" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This declares most of the core of Emacs Lisp""" start="00:13:04.421" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""that's not written in C.""" start="00:13:09.861" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""There's also &quot;byte-run.el&quot;. Schemacs Emacs Lisp can now""" start="00:13:12.861" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""evaluate this. This is where functions like &quot;defun&quot; are""" start="00:13:19.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""defined, and &quot;defmacro&quot;. So as you can see,""" start="00:13:24.380" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""defun itself is a defmacro defined right here.""" start="00:13:28.360" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It's written in Emacs Lisp itself,""" start="00:13:30.800" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""defined in terms of defalias.""" start="00:13:34.860" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So I can evaluate &quot;byte-run&quot;,""" start="00:13:37.720" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I can evaluate &quot;macroexp&quot;,""" start="00:13:40.240" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and the failure occurs somewhere in &quot;subr.el&quot;.""" start="00:13:42.740" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Although if you look at the stack trace,""" start="00:13:46.020" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""it doesn't provide all the necessary information.""" start="00:13:48.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So it appears to be happening in byte-run.el.""" start="00:13:51.160" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Really, it's an error that's occurring inside of a macro,""" start="00:13:56.440" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and the macro call site is somewhere in subr.el.""" start="00:14:00.620" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Anyway, take note of this stack trace.""" start="00:14:05.800" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This was run from within Guile.""" start="00:14:08.640" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""Other Scheme implementations""" start="00:14:12.020" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""Now what I've done this past year""" start="00:14:12.020" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""is make it work on other Scheme implementations.""" start="00:14:14.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Use &quot;make&quot; to launch a Gauche REPL.""" start="00:14:19.480" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Now I'm inside of Gauche.""" start="00:14:23.834" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This is the command that""" start="00:14:26.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""you would use to launch a Gauche REPL.""" start="00:14:27.234" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And I can load the same program (load &quot;elisp-tests.scm&quot;).""" start="00:14:30.080" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You get the exact same result as Guile.""" start="00:14:38.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So we have two different Scheme implementations""" start="00:14:42.760" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""producing the same result.""" start="00:14:45.800" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Let's try &quot;make&quot; a Chibi REPL. This is Chibi Scheme.""" start="00:14:46.800" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And you can (load &quot;elisp-tests.scm&quot;).""" start="00:14:53.080" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Chibi is a bit slower, but you get the exact same result.""" start="00:15:00.220" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So we have three different Scheme implementations""" start="00:15:04.081" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""all running Emacs Lisp,""" start="00:15:07.401" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and all producing the same result.""" start="00:15:11.540" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I think that's...""" start="00:15:14.040" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'm fairly proud of that accomplishment.""" start="00:15:14.768" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I was able to get the code written to the point""" start="00:15:17.100" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""where it actually runs on multiple implementations.""" start="00:15:21.201" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You can also try making it for other Scheme compilers""" start="00:15:24.880" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""like &quot;schemacs-mitscheme&quot; for example,""" start="00:15:30.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""but this will fail.""" start="00:15:35.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You can try building it for &quot;schemacs-chez&quot;,""" start="00:15:40.020" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Let's try Chez... there we go.""" start="00:15:46.680" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And it will use Akku,""" start="00:15:51.801" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and it will fetch the necessary dependencies.""" start="00:15:54.234" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But it fails, and I haven't been able to""" start="00:15:58.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""debug that quite yet.""" start="00:16:03.434" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Stklos fails for a similar reason.""" start="00:16:05.960" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Gambit... Chicken still doesn't build all the way yet.""" start="00:16:13.140" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The Makefile at least has places for it.""" start="00:16:21.700" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""If anyone can help me out and get Schemacs to compile""" start="00:16:27.121" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""on these other Scheme implementations,""" start="00:16:30.968" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'd appreciate it.""" start="00:16:32.734" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I can probably figure it out myself,""" start="00:16:34.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""but that will take more time.""" start="00:16:35.468" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And let me just show you quickly""" start="00:16:37.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the test program.""" start="00:16:40.121" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Basically this is the Emacs Lisp test program""" start="00:16:41.721" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""that I was just running, and it produces an error.""" start="00:16:44.501" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""All it does is it loads these files here in this order,""" start="00:16:48.581" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and it fails right around here.""" start="00:16:53.221" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So it's able to load these two.""" start="00:16:55.181" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And yeah, that's what I've accomplished""" start="00:16:58.320" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""on the Emacs Lisp side of things.""" start="00:17:01.361" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""GUI framework""" start="00:17:06.200" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""The next thing I want to show you is the GUI framework""" start="00:17:06.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""that I've written, which I'm fairly proud of so far.""" start="00:17:09.120" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So this is the GUI framework""" start="00:17:13.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""(oops, I better launch it again, OK...)""" start="00:17:15.834" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and let me show you the tests.""" start="00:17:19.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So here in the tests, you can start to see""" start="00:17:22.601" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""some examples of how you use it.""" start="00:17:25.701" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So here is a &quot;counter&quot; test, and this is kind of like""" start="00:17:29.068" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the &quot;hello world&quot; of reactive programming frameworks,""" start="00:17:31.834" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""where you have a state variable,""" start="00:17:35.941" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""sometimes called an &quot;observable.&quot;""" start="00:17:38.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'm calling it &quot;number&quot;,""" start="00:17:41.660" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and it uses &quot;=&quot; to check if the state has updated.""" start="00:17:43.440" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""If an update occurs and the new value is different""" start="00:17:49.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""from the old value according to the &quot;=&quot; function,""" start="00:17:52.821" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""then trigger a state update in the GUI as well.""" start="00:17:55.033" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Initialize to 0, bound to &quot;number&quot;.""" start="00:17:59.233" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I have a &quot;button&quot; function which creates a simple button.""" start="00:18:03.100" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""It takes a label and an action.""" start="00:18:06.133" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Right here you see the &quot;div&quot; command.""" start="00:18:07.833" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This is what creates a &quot;div&quot;.""" start="00:18:10.866" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Using the properties, I describe that this div is a""" start="00:18:13.040" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""push-button and the &quot;on-button-push&quot; is an action.""" start="00:18:19.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The action is to update the variable &quot;number&quot;""" start="00:18:22.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""using whatever function or lambda was provided to it.""" start="00:18:25.266" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And then the content that you see on screen,""" start="00:18:30.400" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""that you will see on screen when it runs,""" start="00:18:31.966" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""is here. You create a &quot;div-pack cut-vertical&quot;.""" start="00:18:34.034" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""You declare two buttons and then you declare""" start="00:18:38.668" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""this &quot;use-vars&quot; which will take the content""" start="00:18:43.234" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""of this variable here, this observable,""" start="00:18:46.801" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and place it into the GUI next to the buttons here.""" start="00:18:48.834" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So what you will see on screen is""" start="00:18:51.734" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""a &quot;plus&quot; button which increments,""" start="00:18:54.234" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""here is the &quot;increment&quot; function,""" start="00:18:57.068" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""a &quot;minus&quot; button which decrements,""" start="00:18:59.321" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and then the content of the variable that is""" start="00:19:02.780" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""being incremented and decremented.""" start="00:19:05.480" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The advantage of these reactive frameworks is that""" start="00:19:09.700" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""with very few lines of code""" start="00:19:11.866" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""you can create fairly complex interfaces.""" start="00:19:13.066" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The less code you have to write,""" start="00:19:16.033" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the fewer chances you have to make mistakes.""" start="00:19:18.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So let's just run this program.""" start="00:19:21.233" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""This was the &quot;counter-test.&quot;""" start="00:19:23.968" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And that is the debug window. Here's the &quot;counter.&quot;""" start="00:19:33.293" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'm sorry it's not much larger than this.""" start="00:19:35.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""But here's the &quot;plus&quot; button, the &quot;minus&quot; button,""" start="00:19:38.453" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and here's the &quot;number&quot;, 0.""" start="00:19:41.133" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And I can increment or decrement as much as I like.""" start="00:19:43.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So yeah, that's kind of the hello world""" start="00:19:49.793" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""of reactive programming. (I'll reboot the REPL...)""" start="00:19:51.101" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The next thing I want to show you is this layout test.""" start="00:19:55.240" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And I'll just run the test first.""" start="00:19:58.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So here we have basically""" start="00:20:02.193" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""a tiling window manager kind of thing,""" start="00:20:05.020" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""where you can resize the tiles""" start="00:20:08.540" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and then by clicking on these buttons here,""" start="00:20:11.280" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""you can change the layout.""" start="00:20:12.934" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So you can do two on the right,""" start="00:20:16.940" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""two up above, or three up above. So, yeah.""" start="00:20:20.168" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Those tiling windows, as you can see,""" start="00:20:27.101" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""once I work this branch into the main branch of Schemacs,""" start="00:20:30.268" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I can use that to implement""" start="00:20:33.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the split window functionality for Schemacs,""" start="00:20:35.274" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""the editor. So here's what this split...""" start="00:20:38.266" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Here's the layout test that you just saw.""" start="00:20:42.466" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Let me make it a bit smaller""" start="00:20:44.866" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""so that it all fits on one screen.""" start="00:20:46.733" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So basically we have the &quot;button&quot; command again,""" start="00:20:48.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and then these are the button actions""" start="00:20:51.366" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""which basically just changes the layout,""" start="00:20:54.133" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and then I have the layout. So this layout is a &quot;div.&quot;""" start="00:20:57.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The first div just places three buttons in a row.""" start="00:21:01.460" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""The next layout is a div within a div.""" start="00:21:04.920" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So we have one div which places the button""" start="00:21:07.533" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""called &quot;two right&quot; buttons, and the div above it,""" start="00:21:13.000" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""which places the &quot;three in a row&quot; button""" start="00:21:18.633" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""or the &quot;two above&quot; buttons.""" start="00:21:21.493" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""And here's the next... So there's three different""" start="00:21:22.661" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""layouts, and clicking on one of their associated buttons""" start="00:21:26.001" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""will just change the layout.""" start="00:21:30.601" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""As you can see, very little code""" start="00:21:32.101" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""to create a somewhat complex user interface.""" start="00:21:33.434" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""That's the advantage of using reactive or declarative""" start="00:21:38.501" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""UI programming paradigms.""" start="00:21:42.868" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So yeah, this has not been merged into Schemacs""" start="00:21:44.234" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""at the time of this recording,""" start="00:21:47.233" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""but will be soon hopefully.""" start="00:21:48.701" video="mainVideo-schemacs" id="subtitle"]]
+
+<div class="transcript-heading">[[!template new="1" text="""Wrapping up""" start="00:21:51.520" video="mainVideo-schemacs" id="subtitle"]]</div>[[!template text="""So yeah, I think I've already gone on for 20 minutes.""" start="00:21:51.520" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So I guess I'll just end my presentation here.""" start="00:21:55.166" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I have lots more to talk about.""" start="00:21:59.140" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I guess I will say one last thing before I go:""" start="00:22:00.466" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""that I would very much like for others""" start="00:22:03.980" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""to try and contribute to this project.""" start="00:22:07.066" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I will do my best to try and help teach anybody""" start="00:22:09.200" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""or work with anybody, especially even""" start="00:22:14.233" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""if you don't have much experience with Scheme.""" start="00:22:16.833" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I'd like to help everybody try to contribute.""" start="00:22:18.600" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Basically I want to get this proof of concept working.""" start="00:22:22.760" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""I want to get a stable user interface up and running,""" start="00:22:26.240" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""and then we can start working on""" start="00:22:30.674" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""improving the Emacs Lisp interpreter all together.""" start="00:22:33.066" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""There are close to 1,400 built-in functions""" start="00:22:36.700" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""which need to be implemented.""" start="00:22:41.066" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""We don't need to get all of them""" start="00:22:43.660" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""in order to be able to run probably most of ELPA,""" start="00:22:44.966" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""but as much as possible.""" start="00:22:48.466" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""We would like to clone Emacs Lisp and I need help.""" start="00:22:50.866" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""So get a hold of me. My project is on Codeberg.""" start="00:22:54.800" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""Well, (oh, I can't show this here),""" start="00:23:02.580" video="mainVideo-schemacs" id="subtitle"]]
+[[!template text="""but I will end it there. Thank you for listening.""" start="00:23:06.920" video="mainVideo-schemacs" id="subtitle"]]
+
+</div>
+
+Captioner: sachac
+
 Questions or comments? Please e-mail [emacsconf-org-private@gnu.org](mailto:emacsconf-org-private@gnu.org?subject=Comment%20for%20EmacsConf%202023%20schemacs%3A%20One%20year%20progress%20update%20Schemacs%20%28formerly%20Gypsum%29)
 
 
diff --git a/2025/info/schemacs-before.md b/2025/info/schemacs-before.md
index 68611762..b567c538 100644
--- a/2025/info/schemacs-before.md
+++ b/2025/info/schemacs-before.md
@@ -8,12 +8,23 @@ The following image shows where the talk is in the schedule for Sat 2025-12-06.
 Format: 24-min talk			; Q&A: BigBlueButton conference room <https://media.emacsconf.org/2025/current/bbb-schemacs.html> Etherpad: <https://pad.emacsconf.org/2025-schemacs>  
 Etherpad: <https://pad.emacsconf.org/2025-schemacs>  
 Discuss on IRC: [#emacsconf-dev](https://chat.emacsconf.org/?join=emacsconf,emacsconf-dev)  
-Status: Ready to stream  
+Status: Now playing on the conference livestream  
 <div>Times in different time zones:</div><div class="times" start="2025-12-06T14:30:00Z" end="2025-12-06T14:55:00Z"><div class="conf-time">Saturday, Dec 6 2025, ~9:30 AM - 9:55 AM EST (US/Eastern)</div><div class="others"><div>which is the same as:</div>Saturday, Dec 6 2025, ~8:30 AM - 8:55 AM CST (US/Central)<br />Saturday, Dec 6 2025, ~7:30 AM - 7:55 AM MST (US/Mountain)<br />Saturday, Dec 6 2025, ~6:30 AM - 6:55 AM PST (US/Pacific)<br />Saturday, Dec 6 2025, ~2:30 PM - 2:55 PM UTC <br />Saturday, Dec 6 2025, ~3:30 PM - 3:55 PM CET (Europe/Paris)<br />Saturday, Dec 6 2025, ~4:30 PM - 4:55 PM EET (Europe/Athens)<br />Saturday, Dec 6 2025, ~8:00 PM - 8:25 PM IST (Asia/Kolkata)<br />Saturday, Dec 6 2025, ~10:30 PM - 10:55 PM +08 (Asia/Singapore)<br />Saturday, Dec 6 2025, ~11:30 PM - 11:55 PM JST (Asia/Tokyo)</div></div><div><strong><a href="/2025/watch/dev/">Find out how to watch and participate</a></strong></div>
 
 
 
 
+<div class="vid mainVideo"><video controls preload="none" id="mainVideo-schemacs"><source src="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.webm" />captions="""<track label="English" kind="captions" srclang="en" src="/2025/captions/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.vtt" default />"""<track kind="chapters" label="Chapters" src="/2025/captions/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main--chapters.vtt" /><p><em>Your browser does not support the video tag. Please download the video instead.</em></p></video>[[!template id="chapters" vidid="mainVideo-schemacs" data="""
+02:07.200 The scope of the project
+04:24.760 Difference with Robin Templeton's project (Guile-Emacs)
+05:49.720 Progress made since last year
+07:28.040 Portable React-like GUI
+09:06.040 Demo
+11:48.700 Additional changes
+14:12.020 Other Scheme implementations
+17:06.200 GUI framework
+21:51.520 Wrapping up
 
+"""]]<div></div>Duration: 23:14 minutes<div class="files resources"><ul><li><a href="https://pad.emacsconf.org/2025-schemacs">Open Etherpad</a></li><li><a href="https://media.emacsconf.org/2025/current/bbb-schemacs.html">Open public Q&A</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--intro.vtt">Download --intro.vtt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--intro.webm">Download --intro.webm</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main--chapters.vtt">Download --main--chapters.vtt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.opus">Download --main.opus (10MB)</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.png">Download --main.png</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.vtt">Download --main.vtt</a></li><li><a href="https://media.emacsconf.org/2025/emacsconf-2025-schemacs--one-year-progress-update-schemacs-formerly-gypsum--ramin-honary--main.webm">Download --main.webm (63MB)</a></li><li><a href="https://youtu.be/KmMeLfYn1xY">View on Youtube</a></li></ul></div></div>
 # Description
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author	EmacsConf <emacsconf-org@gnu.org>	2025-12-06 09:30:39 -0500
committer	EmacsConf <emacsconf-org@gnu.org>	2025-12-06 09:30:39 -0500
commit	662761fc5e3ac3b958dccf7a0378ed8c014c3180 (patch)
tree	069c861c8696fae222657f6a05dc3edba327874a
parent	df88a9a01c23de03d0f3ece3ac2eb4941d417f22 (diff)
download	emacsconf-wiki-662761fc5e3ac3b958dccf7a0378ed8c014c3180.tar.xz emacsconf-wiki-662761fc5e3ac3b958dccf7a0378ed8c014c3180.zip