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+[[!meta title="Gypsum: my clone of Emacs and ELisp written in Scheme"]]
+[[!meta copyright="Copyright © 2024 Ramin Honary"]]
+[[!inline pages="internal(2024/info/gypsum-nav)" raw="yes"]]
+
+<!-- Initially generated with emacsconf-publish-talk-page and then left alone for manual editing -->
+<!-- You can manually edit this file to update the abstract, add links, etc. --->
+
+
+# Gypsum: my clone of Emacs and ELisp written in Scheme
+Ramin Honary (he/him) - <mailto:ramin.honary@gmail.com>
+
+[[!inline pages="internal(2024/info/gypsum-before)" raw="yes"]]
+
+I  would like  to demonstrate  an  Emacs clone  I have  been
+writing  in Guile  Scheme  for  the past  year,  which I  am
+tentatively  calling "Gypsum".  Unlike  other editors  which
+only clone  the Emacs keybindings (Edwin,  Jed, jEdit, Jove,
+Lem, MG,  Yi, Zile), I hope  my Emacs clone will  also fully
+clone the  Emacs Lisp programming language  well enough that
+many of the packages in ELPA, Non-GNU ELPA, and perhaps even
+MELPA, can be used in  "Gypsum" without any modification.  I
+would also  like to  talk a  little bit about  the how  I am
+implementing  it  (the  software architecture),  and  invite
+others to contribute.
+
+I  think my  project  is  of interest  to  many Emacs  users
+because, firstly, I have personally spoken with a relatively
+large number of people who have expressed interest in making
+Emacs  programmable in  Scheme.  Secondly, there  is a  good
+amount   of  prior   art  for   Scheme  implementations   of
+Emacs. There  are even  builds of Emacs  that link  to Guile
+which  provides  a   "scheme-eval"  built-in  function  that
+translates  between   Elisp  data  types  and   Scheme  data
+types. The  Guile compiler itself  ships with an  Emacs Lisp
+compiler as  well, although  it does  not provide  enough of
+Emacs's built-in functions to be of much use.
+
+So by  using Guile, we  can make use of  a lot of  the prior
+art, in fact  I am currently using the  tokenizer and reader
+used  in Guile's  built-in  Elisp  interpreter to  implement
+"Gypsum's" Elisp interpreter. That said,  I have gone out of
+my way to make my code fully R7RS compliant, so I hope I can
+port  it to  other Scheme  implementations like  MIT Scheme,
+Gambit, Stklos, and perhaps Chez Scheme with Gwen Weinholt's
+R7-to-R6RS  translator.  I  consider the  Guile  version  of
+Gypsum to  be the  reference implementation  of what  I hope
+will become a fully  cross-platform programming language and
+text editor written in portable R7RS Scheme.
+
+The   reference  implementation   of  "Gypsum"   is  a   GUI
+application   based   on   Gtk  using   a   library   called
+"Guile-GI".   Guile-GI   uses  the   GObject   Introspection
+framework to automatically generate Scheme language bindings
+to libraries  like Gtk and Glib  which are written in  the C
+programming language. There is not yet any terminal-emulator
+version of "Gypsum."
+
+The next step of the project  will be to implement enough of
+Elisp that we can run  tests written in the Emacs Regression
+Testing  (ERT)  framework.  We   can  then  incorporate  the
+original GNU  Emacs regression  test suite into  Gypsum. Any
+new API added to Gypsum  Elisp will most likely already have
+regression tests we can use to  make sure it is working in a
+way that is compatible with GNU  Emacs Lisp. I would like to
+make it as easy as possible for people to contribute to this
+project, and  having a list  of APIs to be  implemented each
+with  a set  of regression  tests the  APIs are  expected to
+pass, is a very good way to do that.
+
+About the speaker:
+
+My name is Ramin Honary, I have been a professional software
+engineer  of  16  years,   lately  mostly  doing  full-stack
+software  development. I  have always  been fascinated  with
+programming languages,  and especially  functional languages
+like   Lisp   and  Haskell.   I   have   been  using   Emacs
+since 2017.  But lately it is  with Scheme that I  have been
+spending  most  of  my  free   time.  I  am  only  a  Scheme
+programming  enthusiast,  I  am  not  involved  with  Scheme
+professionally.
+
+
+
+[[!inline pages="internal(2024/info/gypsum-after)" raw="yes"]]
+
+[[!inline pages="internal(2024/info/gypsum-nav)" raw="yes"]]
+
+