path: root/2024/captions/emacsconf-2024-hyperdrive--new-in-hyperdriveel-quick-install-peer-graph-transclusion--joseph-turner--main.vtt

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 somewhere on[??]. 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 hypergateway 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 pet name. 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 pet name. I'll assign Alice a

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pet name, 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 pet name 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

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3. 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 pet name for Alice,

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we see Alice's pet name 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 pet

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name, my friend Alice, nickname Alice, public key, DM1, and

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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

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Hyperdrive, and... Wingsuit Flying Grand Canyon Point of

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View Not Clickbait? I gotta check this out.

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No! Disgusting! No wonder Bob blocked Mallory. Let's go

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back to Alice's paragraph. 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

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busy. 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 OA 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 blockers max

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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. 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 this new hyperdrive. I'll type in Joseph, a

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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. Max hops, let's say three, and for

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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 pet name 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 HyperDrive

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org-transclusion with M-x package-install

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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 Enter 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 snippet from Alice's

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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 headings 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

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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

00:19:39.160 --> 00:19:44.759
from link. 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. That

00:19:52.920 --> 00:19:53.356
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.