Rust Programming Language Rust and WebAssembly Working Group, 30 Aug 2018

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From YouTube: 30 August 2018 Meeting

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The Rust WebAssembly Working Group meeting from 30 August 2018.

A

Welcome to another Rustin webassembly working group how's everybody doing today.

A

Awesome: okay, so diving into the agenda, no new RFC's to triage, let's jump into the blocking release, candidates, issues which are getting pretty small here, which is pretty exciting.

A

So I think we talked about last time the expressing gist tendencies and how we kind of want to push that back for for when Ashley gets off of vacation. So I think we can continue doing that, but maybe it makes sense not to have that be an explicit goal for the release candidate.

A

So for context, there's two weeks from today is when the release candidate is being cut and, of course, it's just kind of a motivational thing for us. It's not like we're actually putting things into the release candidate, but.

A

Yeah I know two people have a feeling like do you think we should just kick that off for the final six week, sprint.

B

A

B

Wanted to make sure we don't it doesn't fall by the way. So just we come back to it, but I don't think it's critical. If we postpone it one more. That's fine, yeah.

A

Okay, well, let's just keep the tag there so that we keep looking at it. I think it'd be fine.

A

The user-facing documentation overhaul I added a couple new things to the checklist here, which was how to do testing with Wasden Benjen test, especially since I have a almost ready to land as impact test, subcommands yeah other than that. This is still kind of just mostly waiting for like web sis to be published so that we can add documentation for that and yeah, and it's I think other than that. It's in a really good place.

A

What is next, the extends so Sarah had expressed interest in taking on some of these, but I have not heard any activity on that really.

A

Did someone had something they were starting to say about this issue.

C

She might just be busy job searching right now, so yeah.

A

Totally understandable yeah she did like follow up and ask like what the issue which issue it was again, but yeah I, just I, don't know we're. Pretty close. You know here. The mostly what's left is just. We need to actually implement webassembly instance in JSS, and then we can add the extends and then the others are all kind of just objects that are really more like namespaces and it doesn't really matter that much whether they have extends or not so I. Don't know again like this is pretty much done.

A

So see I for the rust and web pack templates.

A

C

Looks like it's just waiting on wasn't act, build, be release.

D

C

Guess we could cut or release sometime either this week or next yeah.

A

So Ashley did ask saying that she wanted to write release, notes. I know she cares a lot about like having really high-quality release, notes yeah.

C

I know I know how she does it. I know she particularly likes doing that, so she gets back forth, so we could probably do. Let me talk to that. I mean it's like. We saw two weeks out until the next release. Canada anyways. We can see.

D

C

D

C

One so I think we have time, but we should probably do it another release. Soon it's been a while yeah.

E

I think I did just joined the car. He worked on the CI thing. Oh yeah.

F

A

A

Two sensors that you've been looking into CI for the template, yeah.

F

As a CI ready, if we release a new version about.

F

A

So we can definitely get a new release out by the end of this little sprint cycle. Another thing that we could do just in the meantime to start landing CI is we could install wasm pack from get n CI just until there's a new release, I.

G

Wasn't back template the rust template and I would say, make it wasn't pack released as soon as possible, because currently the template is broken because it uses an unreleased user's, Verizon pack, pill which is not released yet so everyone who's trying. This right now is actually running into troubles yeah so as soon as possible would be for UX for people trying it.

A

Is it is the template, using anything other than just like the name plasm pack build? Is it relying on features that don't exist in web pack in it.

G

That I don't know, maybe Swain, knows more.

H

I, don't think spent as a yeah he's in the chat. I, don't know if it's related, but I was noticing, like linker errors happening in CI, for like those on Twiggy that someone was talking about.

A

Yeah I see seed you Alex on that issue. It looks like like there's like some died. Lib like Lib LLVM die lived, that's just like not being found.

B

Oh, sir, that's some bug with today's nightly and that'll be fixed. Well, there's a peer heard on Monroe Street, but there's nothing to do with anything. I posted a couple of workarounds to it, it'll it's it's! It's no bloggers being fixed. Okay and.

E

So the thing with the init command is that it's quite slow for our use case, because we just want to do the project and they need command is actually in studying, wasn't wenjian in this kind of stuff. So we cannot use it to actually watch and rebuild this card life. That's why we went with the document so.

A

There's the dash M no install mode which just assumed you've already installed everything yeah yeah.

E

I, don't remember which I mean they still? It still did more work than just reading the thing, but.

F

When can we do the work I? Don't here can be tried to make sure like the command is not present, then we will go, and we do that in that entire plugin, it's much more easier than to release a new version of a comeback. We're just now right.

E

Sorry I didn't know.

F

So, let's try to do the math in fact bill laughing back when the work out, then we tried to do that back in it for now in the plugin, so we put an arrogant else, condition there and then probably run up and back in it if, after background is not there, which will actually help us like which will not have this, which will prevent the happy make the happy put of work where you can play yes,.

E

So I think that would work, but I yeah I need to try last time I tried if the in it come on is where the pretty bad experience, because you had to wait for several more steps. I mean I can.

F

mmm No install yeah.

E

I run it with the announcer mode. I need to try again, but I think there will be a good fix for now. But then the thing is that if we release the bill comment at the end of the week, we are going to throw away this work. No.

F

Obviously, higher preference so will first write a bill, but fails then go during it, but no more no installed and we can remove it in the next question.

E

Yeah I mean the make sense. I will try.

A

So the next issue here is the publish the website and there's a little bit of movement on that. So we're very close to being done here. I added a new unchecked checkbox to this, which is the web ID all callbacks, because I don't think it makes sense to publish web says without being able to add event listeners for example and I believe it was ADP, filed an issue about this as well and yeah.

A

So it just doesn't make sense to release without that and then the other thing is Alex and I were talking the other day about web sis and it's slow compilation times, because it's generating crap ton of rust or every single. You know API that exists on the web and it takes like you, know, 20-something seconds, to compile on fast machines and do we care about I mean.

A

Obviously we we do care about compilation times, but we care enough that we consider it a blocker for publishing, Webster's crate and if so, what do we want to do to tackle that.

B

So Alex my opinion is yes, there should be a blocker and my best idea that I have for making it for the reasonable time frame. I'm fixing this is adding a per ton of features to web sis and basically say that when you enable a feature you're, basically enabling that ideal file- and so it's on you like, we can provide some documentation for that.

B

But it's on users, then just say I want face if there's a tiny, subset, mm-hmm and over time, I think like right now, if you enable one-way audio file, it might not be that useful, because everything it depends on, isn't also enabled, and so we might be able to over time, draw graphs between these dependencies and say like when you enable, like the canvas context like you'll, get a bunch of other stuff that is required for using it at all. But for now I think it's a simple thing.

B

Just say where it you, like, we list out all the way buddy of files and we just don't compile. If you don't listed it and that should be blazingly fast, because yeah and.

A

If we do that, then I think we need to also make it so that the documentation always has everything enabled just so people know what's available and that the doc comment says which feature is required in order to get that method.

B

That makes sense, it'll be non-trivial to do what we can do it actually.

A

I think that's pretty easy, because there's so a tress conk I saw the talk from this genus about adding like how the supported on window those only kind of little boxes end up in rust, doc, oh yeah,.

B

I mean just like right now: the web idea beckon, has no knowledge of the way I'll file that it came from so like all no annotations have like I am from this audio file and the current parser we have has no support of like coming from anyway, but so we could probably fix those things, but the other aspect is that we don't necessarily know that we know the file that it was defined in so like the method itself, but it also depends on all types in the type signature being defined and so we'd have to say it depends on all of those features being defined.

B

A

I mean I forgot that the way that the build RS works for websites is it just concatenates everything together into a string in memory and then passes it through the webbernet. We don't have to do that. We could do it once per.

B

A

A

Okay, well, let's take this discussion to the issue for the future. Okay, so overall I think we're doing like really well. We set out like a huge amount of stuff to do for this cycle and I think pretty much. All of it is like super on track, so congrats everyone thanks for all the progress we've been making.

D

A

Let's jump into the like each sub goal: status updates, I feel like we just went over web sis I, don't think we need to get into that more Azzam back I can do an update, which is that soul, as impact is now downloading, hasn't been Jen when available. Instead of doing a cargo install and of course this is not released. Yet it's like way faster, assuming you have a good internet connection, building web engine from sources like unknown, like 30 seconds or so a minute and downloading it. It's like one. Second,.

A

Cindy, are you on a? Are you dialing in? Are you on soon.

A

Do you think you could mute, there's a bunch of the background noise coming in, thank you and then I'm also working the Wesson practice command.

A

Yeah and then the out directory for requests, it's still in flight and there's some weird CI failures. That I, don't really understand where, like the the CI machine is getting its disk usage is like full.

C

Maybe be cash bills, I can always go through and just be at the cash see. I see it that yeah.

A

Yeah, so that's what I was thinking too, but like none of the other pull requests are getting this issue. So it's a little confusing to me. Okay,.

C

I have a little time today, so I guess I can see why it's failing yeah.

A

Because it's it's just you know some some random contributor who's coming in and like is stuck on this and like I, think they would really appreciate. You know a little bit of help here. Yeah.

C

A

C

Me let me take a look at that today.

C

A

F

Alright, sorry, anyone.

D

F

The I were the template.

A

Unable to see I for the rust plasm template, yeah.

F

A

Yes, we need to do that. I will file an issue so I know we have an issue for doing that in wesam pack, but it's not clear to me that that's the right place to do that. I think it probably wants it in its own repo, so that we can enable depend a bot and like automatically stay up to date with all the things yeah I guess that might not work actually for the template because it has the like mustaches style. You know, placeholders I, don't know if depend a bot will handle it.

A

But, yes, that is something.

A

Need to prioritize.

A

Early was it was a map template less impact, template.

A

All right, then, do you want to talk about some bundler stuff first in deal so.

E

It's the same status and last time, so it's on track. Okay,.

A

Documentation, guitars II.

C

I was a bit busy this week with a job interview in San, Fran, then kind of being all over the place. So I have not taken a look as to what's been going on the deed. Your blossom pack is your Ma's and pack. P are still kind of in progress.

A

Yeah went ahead and merged it. Oh no, that.

C

That was kind of the major one. I think that integrated a lot of things did a lot of fixes. So I think you mean. Maybe you should subscribe a lot of what happened there and for everyone else come on. It was pretty big.

A

Yeah so, basically like for a long time, we've wanted to talk about like kinda, like using the less impact workflow in the game of life oil and had been kind of waiting on like newer, Wesson PAC releases. That had you know likewise impact build and stuff. But then, since it's so easy to just rename in it to build once we ship that I just went, did it, and so it's all integrated into the tutorial. Now and there's a new section on publishing a rust generated, wasm NPM package to NPM and yeah.

A

And the other thing those interesting is there was like some bugs that came in as part of that like so, you have to do. Npm, link after NPM install and like people like found that and filed issues, which is great. That means people are actually like going through the whole tutorial and everything so very.

C

Fun and it's also good that they like felt the need to file an issue, because sometimes you know.

D

Website updates.

D

F

Okay, so I'm still waiting for that.

F

We want to contract again.

A

That should start to be so both Ashley and Aaron are on vacation right now. So hopefully we can prioritize that to get back yeah.

F

A

Yeah debugging not much updates the proof of concept that URIs been working on is kind of like making its way upstream into the bugger HTML and other places. The like. Basically, it be, the non Firefox browsers are not in a place where they're ready to talk about debugging, yet which is kind of like cool for Firefox. That they're like ahead, but like not great for everyone else.

A

We wants to do bug because they're just not ready to like tackle this problem, but it's like the the general idea of like the way that this is going to shape up eventually, is it's probably going to be some sort of like web extension or module, or something that you can import that allows you to like provide information about the program being debug and so for rust will have some module that will interpret like dwarf and then provide that as like in a higher level, API that the dev tools call into and so I know.

A

Uri is prototyping that as well and he's writing that and rust using the Gimli package for parsing dwarf and then that whole thing is going to be compiled, tool, Azzam and so will. When we debug laz them will be debugging wasm with wasm it'll be very fun and kind of met a circular and all of that stuff.

A

Yeah and then templates I feel, like templates, we already kind of talked about in both the triage and other earlier sections. So unless anyone has anything else, they'd like to talk about templates I, don't think there's much more to say: okay, that's everything we have on the agenda. Does anyone have anything else they'd like to bring up to the group.

G

I'm getting ready to release a course.

B

F

G

Which will be completely free religion, Alera release a video course on how to get started last assembly I will be 25 minutes and it's coming free and it's like I'm, basically waiting for wasn't back for the next release and yeah, probably gonna in two weeks or so, and a little personal and.

G

D

A

What kind of topics are you going to cover in the you.

G

Service 25 minutes yeah, he is starting from like I, took the bukas inspiration and starting from like how to draw just using the the target was an unknown unknown, but then going into.

G

Physically, where Hogwarts wasn't pack and why you should use present pack explaining, wasn't fine, Chen and and then going even into chases, and the last lesson is going to be like quick demo, a question pack, it's not note ready yet so I, oh hey! You can also run webassembly note, but yeah. That's not wasn't pack yet, but once that's ready, I can add a lesson later on about how to demo wasn't a keen nose. Yeah, that's a rough overview. Actually I can I can post it in the in the paper.

G

All the lesson titles then and go take is a piece. I will add that, after the call.

A

Awesome. Thank you about not supporting node I. Don't know, if has impacts, surfaces any way to specify custom flags for resin by Jen, but there's definitely a mode where you can target requirejs style or not required. Just like common jazz style require modules.

A

Yeah, so we need a double check that resin pack isn't preventing you from doing that.

G

G

Let's look into it, I can mention you.

A

Yeah I'm gonna throw something in the paper there.

A

All right, I think we're running out of time. I don't actually get the countdown timer, so if other people do, how much time do we have six seven eight I can count. Is that eight minutes.

B

Or eight seconds some of you said a half minutes right now: okay,.

A

Yeah any last comments. Anything you didn't have anything to share.

D

A

Well, I, guess: that's it thanks! Everyone, for you know taking time out of your busy days to talk about Russian webassembly and have a wonderful week.