WEBVTT captioned by sachac
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Hello, welcome to this talk on hyperdrive.el. I'm Joseph
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Turner presenting on behalf of ushin, a tiny independent
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information freedom nonprofit. hyperdrive.el is an Emacs
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interface to the hyperdrive peer-to-peer file sharing
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system built by Holepunch. Like other peer-to-peer file
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sharing tools, such as BitTorrent, hyperdrive lets you
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share unlimited files directly with other users without
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having to go through a central hub. One thing that sets
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Hyperdrive apart is that the files you share can be
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modified. Since hyperdrive has built-in versioning,
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you can explore the history of changes that you make to your
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files or others make to theirs. You can stream video and
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audio. There's no sign-up or account creation process
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required. It's all free software. This means that the
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community has the legal right, the tools, and the
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information necessary to participate in the development
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process, or even fork the project
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and go cimarron. Since
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last year's talk, we've added a few new features. It's now
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much easier to get started using hyperdrive.el, since we
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added the hyperdrive-install command, which downloads the
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gateway program and installs it on your machine. We added a
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peer graph feature, which lets you visualize your network
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of sources of information. We also published a new package,
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hyperdrive-org-transclusion, which lets you display live
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updating snippets of hyperdrive files in Org documents.
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Let's get started. Let's say you get an email from your
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friend Alice inviting you to check out hyperdrive.el.
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Let's click on the link here to look at the manual. Let's go
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down to the installation section. It says you need to have
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GNU Emacs version 28.1 or later. I'll assume you have it
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installed, but if not, you can click this link.
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You need to have curl installed,
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which is likely already the case, but if not,
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hyperdrive.el will let you know.
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Now from within Emacs you can install hyperdrive.el.
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Run M-x package-refresh-contents.
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Then, M-x package-install, type in hyperdrive,
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and hit return. Next, we'll install hyper-gateway-ushin.
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Let's run M-x hyperdrive-install. It's prompting me to
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download and install the gateway, which is 51 megabytes.
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I'll press y.
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I will skip most of the download process. The download is
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wrapping up.
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Now, it's prompting me to start the gateway. I can either run
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M-x hyperdrive-start, or I can press this button. And
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after a few moments, we'll see that the gateway will start.
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It's ready. You can also click this button, "View hyperdrive
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User Info Manual", to view the same manual that we were
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viewing in the browser. The info manual comes with
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hyperdrive.el and is available offline. Now that
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everything's installed and the gateway is running, we're
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back at Alice's email. Let's click on the link to her
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hyperdrive. Here's Alice's hyperdrive. Let's open her
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hello.org file.
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I'm being prompted to mark Alice's hyperdrive. Currently,
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it's unknown. I'll press ? to see more details.
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"safe", "unsafe", "unknown". I'll press e for "explain". In the info
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manual, it says that if a hyperdrive is marked as safe, that
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means files in that hyperdrive will automatically have
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their major mode enabled based on their file extension. In
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this case, if I mark Alice's hyperdrive as safe and I click on
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this hello.org file, Emacs will automatically enable Org
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mode in that file. Since I know Alice directly, I'll mark her
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hyperdrive as safe. I'll click on the file hello.org again,
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and now I'll press Shift-s for safe.
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Now I'm going to set Alice's petname. hyperdrive.el has
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different ways to name a hyperdrive. The public key is the
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drive's unique identifier. You can also assign yourself a
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public nickname, which you announce to the world. Then
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users on their own machines can assign each hyperdrive that
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they are aware of a private petname. I'll assign Alice a
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petname, which is the way that I will identify Alice just on
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my own machine. I'll type in "My Friend Alice".
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Then when I refresh her drive,
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we see that it says petname in the top left.
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Now I'll do what she asks,
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which is to right click on her name and
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open her peer graph. In the context menu, I see a few
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different actions I can take, but I'll click on "Peer Graph".
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It's prompting me to pick the max hops for sources. Default 3.
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I'll choose the default. Same for blockers. I'll explain
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what that means later.
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This is Alice's peer graph. Here we can see that Alice has two
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direct sources, Bob and Eve. Both Bob and Eve have assigned
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themselves nicknames, and so we see Bob and Eve here. Eve has
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assigned this other hyperdrive to be a source. But this
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other hyperdrive, whose public key is "kb3zr6mq"
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and so on--if we hover over the hyperdrive, we'll see the full
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public key--has not assigned itself a nickname. So we
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just see the truncated short public key. Because we've
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assigned a petname for Alice,
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we see Alice's petname show up here.
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Now I'll open the peer list view to show the same
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information in a different way. Since I'm using a large
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font, I'll widen this window so we can see everything going
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on in the peer list. We see that the root hyperdrive is
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petname "My Friend Alice", nickname "alice", public key "dm1",
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and so on. We've set the sources max hops to three, which means
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that we will go out at most three hops from Alice in order to
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find sources. One hop from Alice are Bob and Eve. One hop
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from Eve is "kb3", which is two hops from Alice. Now we've set
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the max hops for sources to three, but in this case, the
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network is small, and "kb3" has no sources. So we can only go
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out two hops from Alice until we run out of sources. In the
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future, we plan to add a search feature based on this list of
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sources. You type in a query, and you get back a list of
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results published by Eve, Bob, or "kb3". It's also possible to
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block peers. I'll open the transient menu by pressing
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question mark. For now, let's turn on showing blocked
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peers. I'll press "s x", and now it says blocked sources.
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Now we can see Mallory also shows up. Mallory has been
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included as a source by Eve, but is blocked. So in the end
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result, she does not show up in the list of sources. Instead,
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she shows up as a blocked source. But how is it that Mallory
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ended up being blocked? Let's open up the transient menu
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once more and click "s b" to show blockers. Now we can see that
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Bob has blocked Mallory. This means that Bob is not
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interested in seeing search results from Mallory. Since
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Alice has included Bob as a blocker, that means that Alice
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trusts Bob to block people on her behalf. So since Bob has
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blocked Mallory, Mallory does not show up in Alice's
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peergraph as a source. Well, now I'm curious to see what it is
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Mallory published that drove Bob to block her. I'll
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right-click on Mallory, and in the context menu, "Open Hyperdrive"
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and... Wingsuit Flying Grand Canyon Point of View Not Clickbait?
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I gotta check this out! [playing: Rick Astley's "Never Gonna Give You Up"]
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No! Disgusting! No wonder Bob blocked Mallory. Let's go
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back to Alice's peer graph. Mallory is a blocked source.
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Are there any peers who are blocked but who aren't sources?
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I'll open the transient menu and I'll press "s x". Now we're
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looking at blocked non-sources. Darth, who's been blocked
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by Bob, has not been added by any of Alice's sources as a
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source. So Darth is a blocked non-source. I'll open the
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transient menu again and I'll press "s x". Now we're
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looking at all blocked peers. Both Mallory and Darth show
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up. If I scroll down in the peer list, we'll see that Mallory
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is listed under blocked sources, and Darth is listed under
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blocked non-sources. This view has gotten a little bit busy.
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Let's say that we're only interested in how Alice
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relates to Mallory. I'll open the transient menu, and I
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will filter the graph to show paths only to Mallory. I'll
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press "o a", type in Mallory, and hit enter. Now we see that
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Mallory has a bold border and "kb3" and Darth are missing from
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the graph. Eve shows up because there's a path from Alice to
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Mallory that goes through Eve. Same for Bob. We can also add
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more than one peer in this view. I'll press "o a" again, and
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this time I'll choose Darth. Now Darth and Mallory have bold
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borders, and "kb3" is still missing. We can remove Mallory and
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Darth one at a time with "o r", or we can press C-u, the
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universal prefix argument, and then "o r" to remove both
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Mallory and Darth from the list. Now we're back to seeing
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everybody. This view of the graph is somewhat simplified
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because we're showing only
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the shortest paths between peers.
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If I press Shift-s now we're looking at all paths.
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Here, we can see that in addition to going from Alice to
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Bob as a source directly, we also go from Alice to Bob through
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Eve as a source. Let's go back to showing only the shortest
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paths. Currently, the max hops for sources and for blockers
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is set to 3. Let's see what happens if we set the
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blockers max hops to 0.
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After the graph reloads, we now see that Mallory
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shows up as a source, not as a blocked source.
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This is because Bob,
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who is one hop away from Alice, is no longer included as a
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blocker, because we've set the blockers max hops to 0. And
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since Bob is not a blocker, the fact that Bob blocks Mallory
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doesn't factor in. While Alice is the only one who gets to
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decide who her direct sources, blockers, and blocked peers
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are, anyone can view Alice's peer graph, tinker with the
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sources or blockers max hops, and use her list of sources to
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do a search. Let's see what happens if we set sources max
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hops to 2. Well, the graph doesn't change, because we only
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ever went out 2 hops anyway. Let's set source's max hops to 1.
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Now we only see Bob and Eve, since "kb3" and Mallory are
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2 hops out. Source hops 0. Now we're left with just Alice.
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Now I'd like to create a new hyperdrive and add Alice as a
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source. I'll run M-x hyperdrive-new.
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Now it's prompting me
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for a new hyperdrive seed. A seed is a string of characters
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that's combined with your secret key, which is generated
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for you by the gateway program, in order to create a new
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public key for each new hyperdrive. I'll type in "Joseph".
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A new drive. Now, I'll right-click on my own name, and in the
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context menu, I'll choose "Set Relation From". From Joseph...
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to Alice...as a source. Now, I'll right-click on my name again,
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and click on "Peer Graph". Sources max hops, let's say three
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and [three] for blockers as well,
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Here's the peer graph from my newly created
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hyperdrive's perspective. Mallory is included as a
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source, three hops from the root. Let's open the list view.
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If we were to mark Alice as a blocker by clicking on this
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button in the blocker column next to the petname for Alice,
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Then we see that Mallory shows up as a blocked source. Only
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now that Joseph includes Alice as a blocker does the fact
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that Bob blocked Mallory take effect. You can click on
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another peer to set them as the root hyperdrive. I'll click
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on Eve. Now we're looking at the peer graph from Eve's
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perspective. This peer graph view has a history. If I open
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the transient menu, you'll see here there's a back and a
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forward button. Back is bound to "l" for "left". If I press "l",
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we're looking at the graph from Joseph's perspective. If I
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press "l" again, now we're looking at Alice, as at the
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beginning. I'll press "r" to go forward, and "r" again, and now
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we're back at Eve. Now, I'd like to show you
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the hyperdrive-org-transclusion package we published.
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I'll open up the hyperdrive manual
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to see how to install it.
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Now, from here, I'll press "m" and type in transclusion to jump
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straight to the "Org-transclusion integration" section of
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the manual. To summarize, we can install
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hyperdrive-org-transclusion with
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M-x package-install RET hyperdrive-org-transclusion.
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Then, once this is done, we will copy the following snippet
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and add it either to our init.el file or, in this case, I'll
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just evaluate it. Now, hyperdrive-org-transclusion-mode is
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enabled.
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Let's go back to the hello.org file in Alice's hyperdrive.
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I'll right-click on Alice, then click "Open Hyperdrive", and
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hit RET on hello.org. This time, I'm not prompted to mark
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Alice's hyperdrive as safe, since we did it already. I'll
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navigate to the "Check out my peers" heading. Then I'll run
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M-x org-store-link. Now, I'll create a new file in my
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hyperdrive by running M-x hyperdrive-find-file. I'll
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select my hyperdrive and I'll call this new file
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response-to-alice.org.
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Now, I'll paste in a response that I've written.
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I'll go to the bottom and I will run M-x org-insert-link
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and I'll insert the link
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that I stored earlier. As a link
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description, I'll change it to
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"Snippet from Alice's hyperdrive file".
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I'll save my hyperdrive file.
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Now, to show that the link works, I'll just kill this buffer
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showing the hello.org file, and I'll click on the link.
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Now, in addition to linking from my file
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to the heading in Alice's file,
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I'd like to transclude this heading's content in my file.
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So I'll go to the link in my file and run
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M-x org-transclusion-make-from-link
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and I'll save my file again.
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All that's been added is another link,
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prefixed with this transclude keyword.
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To make the transclusion show up inline,
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I'll run M-x org-transclusion-add. The content
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of Alice's file hasn't been copied into mine. It's just
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being transcluded. If I run M-x org-transclusion-remove,
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you'll see that the underlying content is still
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just the transclude keyword and the link.
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Now some time has passed and Alice has updated her
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hyperdrive file. She wrote, "Please add me as a source." Since
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the transclude link that I added in my file does not specify a
00:18:33.560 --> 00:18:36.879
version, it will always transclude the latest version of
00:18:36.880 --> 00:18:42.639
Alice's hello.org file. If I run M-x org-transclusion-add
00:18:42.640 --> 00:18:46.719
once more, we'll see that the latest version of Alice's
00:18:46.720 --> 00:18:51.679
file gets transcluded into mine. Let's say that I want to
00:18:51.680 --> 00:18:54.959
transclude the previous version of Alice's hello.org
00:18:54.960 --> 00:18:58.879
file, and I don't want my transclusion to change when Alice
00:18:58.880 --> 00:19:02.919
updates her file. That's possible too. I'll go over to her
00:19:02.920 --> 00:19:09.759
file and run M-x hyperdrive-open-previous-version. Now
00:19:09.760 --> 00:19:14.079
when I widen the window a little, we can see in the mode line
00:19:14.080 --> 00:19:18.279
that this is version 57. For an explanation of what the
00:19:18.280 --> 00:19:21.599
version numbers mean, check out the last video or the info
00:19:21.600 --> 00:19:25.759
manual. For now, I'll go down to her "Check out my peers"
00:19:25.760 --> 00:19:32.999
heading and run M-x org-store-link. Now, in my response to
00:19:33.000 --> 00:19:39.159
Alice, I'll insert the link. I'll run org-transclusion-make-from-link.
00:19:39.160 --> 00:19:44.759
Now there are two transclusions. The first
00:19:44.760 --> 00:19:47.719
transclusion will update whenever Alice updates her file,
00:19:47.720 --> 00:19:52.919
and the second transclusion is pinned to version 57.
00:19:52.920 --> 00:19:53.356
That covers hyperdrive-install, the peer graph, and
00:19:53.357 --> 00:19:58.298
hyperdrive-org-transclusion.
00:19:58.299 --> 00:20:00.519
Feel free to check out the hyperdrive.el
00:20:00.520 --> 00:20:04.119
info manual in the ushin hyperdrive here, or on the
00:20:04.120 --> 00:20:08.439
ushin.org website. Thanks to the folks at Sopranica, we
00:20:08.440 --> 00:20:11.879
have a public XMPP group chat you can join, either using an
00:20:11.880 --> 00:20:15.919
XMPP client or anonymously from your browser. If you use
00:20:15.920 --> 00:20:19.799
Matrix, there's also a bridge. Thank you for watching, and
00:20:19.800 --> 00:20:22.519
Thank you to the EmacsConf organizers and all the
00:20:22.520 --> 00:20:25.160
presenters who made this wonderful event possible.
