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yarn: fix to not use npm to install #11881

Merged
merged 1 commit into from
Apr 5, 2017
Merged

yarn: fix to not use npm to install #11881

merged 1 commit into from
Apr 5, 2017

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SimenB
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@SimenB SimenB commented Mar 31, 2017

  • Have you followed the guidelines for contributing?
  • Have you checked that there aren't other open pull requests for the same formula update/change?
  • Have you built your formula locally with brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
  • Does your build pass brew audit --strict <formula> (after doing brew install <formula>)?

This doesn't pass it's test, and I'm unable to use it locally after install. There seems to be some issue with the symlink. Instead of following it it's just prepended to the current path. So if I try to run yarn from a deep path:

$ ls -la /usr/local/Cellar/yarn/0.21.3/bin
total 16
drwxr-xr-x  4 simen  admin  136 Mar 31 08:21 .
drwxr-xr-x  8 simen  admin  272 Mar 31 08:21 ..
lrwxr-xr-x  1 simen  admin   19 Mar 31 08:21 yarn -> ../libexec/bin/yarn
lrwxr-xr-x  1 simen  admin   22 Mar 31 08:21 yarnpkg -> ../libexec/bin/yarnpkg
$ ls -la /usr/local/Cellar/yarn/0.21.3/libexec/bin
total 32
drwxr-xr-x   7 simen  admin   238 Feb 27 16:36 .
drwxr-xr-x  10 simen  admin   340 Mar 31 08:21 ..
drwxr-xr-x   4 simen  admin   136 Feb 27 16:36 node-gyp-bin
-rwxr-xr-x   1 simen  admin   906 Feb 27 16:29 yarn
-rw-r--r--   1 simen  admin    34 Feb 27 16:29 yarn.cmd
-rwxr-xr-x   1 simen  admin  1874 Feb 27 16:29 yarn.js
-rwxr-xr-x   1 simen  admin    42 Feb 27 16:29 yarnpkg
$ pwd
/Users/simen
$ /usr/local/Cellar/yarn/0.21.3/libexec/bin/yarn --version
0.21.3
$ /usr/local/Cellar/yarn/0.21.3/bin/yarn --version
module.js:472
    throw err;
    ^

Error: Cannot find module '/Users/libexec/bin/yarn.js'
    at Function.Module._resolveFilename (module.js:470:15)
    at Function.Module._load (module.js:418:25)
    at Module.runMain (module.js:605:10)
    at run (bootstrap_node.js:423:7)
    at startup (bootstrap_node.js:147:9)
    at bootstrap_node.js:538:3

Why does this happen? brew test fails because of this. Might be that the old npm solution put up some extra magic symlinks, but I can't find them, beyond the fact that old libexec/bin also was a symlink.

(this is using the old install)

$ ls -la /usr/local/Cellar/yarn/0.21.3/libexec/bin
total 16
drwxr-xr-x  4 simen  admin  136 Mar 31 08:33 .
drwxr-xr-x  5 simen  admin  170 Mar 31 08:33 ..
lrwxr-xr-x  1 simen  admin   36 Mar 31 08:33 yarn -> ../lib/node_modules/yarn/bin/yarn.js
lrwxr-xr-x  1 simen  admin   36 Mar 31 08:33 yarnpkg -> ../lib/node_modules/yarn/bin/yarn.js

/cc @Daniel15

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SimenB commented Mar 31, 2017

Ah, figured it out! The clue was in the last one. The old symlinks pointed directly to the yarn.js file, not to the incuded yarn and yarnpkg. It works now 😄 Sorry about the noise in the OP, but I'll keep it for reference.

Probably because the symlink check in yarn doesn't work properly: https://github.com/yarnpkg/yarn/blob/master/bin/yarn#L3

@SimenB SimenB changed the title [WIP] yarn: fix using npm to install yarn: fix using npm to install Mar 31, 2017
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SimenB commented Mar 31, 2017

This might be partly #6936 /cc @torifat

@SimenB SimenB changed the title yarn: fix using npm to install yarn: fix to not use npm to install Mar 31, 2017
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This has 42,055 installs in the last 30 days. I'd prefer we do such "experiments" on something a bit more obscure than this.

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SimenB commented Mar 31, 2017

Not sure how this is "an experiment"? It exchanges an unsupported way of installing yarn with a supported one. Aren't the tests to be trusted?

And the fact that npm is used to install broke the installation from brew for me yesterday since I got a new npm from a newer node. So even though the tarball itself was unchanged, I was unable to use a brew-installed yarn without resetting brew to a place in history with another node version.

EDIT: This also makes yarn take up 13MB instead of 19MB since it just includes what has to be there, and not the extra files npm adds.

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It exchanges an unsupported way of installing yarn with a supported one.

That could describe a huge number of formulae, so not really convincing.

And the fact that npm is used to install broke the installation from brew for me yesterday since I got a new npm from a newer node. So even though the tarball itself was unchanged, I was unable to use a brew-installed yarn without resetting brew to a place in history with another node version.

Not sure I understand what that means but it's not really relevant to this specific PR and sounds like something you should open an issue about.

inreplace "#{libexec}/lib/node_modules/yarn/package.json", '"installationMethod": "tar"', '"installationMethod": "homebrew"'
libexec.install Dir["*"]
bin.install_symlink "#{libexec}/bin/yarn.js" => "yarn"
bin.install_symlink "#{libexec}/bin/yarn.js" => "yarnpkg"
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Pretty much my only objection here is if they add additional commands that we now need to remember to update/manually add them. Thoughts?

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Those are extracted from the bin object in package.json. Is there some easy way to use something like jq to extract it?

https://github.com/yarnpkg/yarn/blob/76c9fc181e819d76d6f0833f57313c646b9b5406/package.json#L82-L85

$ cat package.json | jq '.bin'
{
  "yarn": "./bin/yarn.js",
  "yarnpkg": "./bin/yarn.js"
}

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You could use Ruby's JSON support to do so but it worries me a little if we get to the point that we're parsing these files rather than letting npm or similar do so...

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Note this is handled without any additional fuss by the current formula.

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That said, I doubt they'll add new ones. yarn is the name of the thing, but since some debian distros already have a global executable called yarn ,yarnpkg is added as an alias. @Daniel15 can probably comment

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In general @Daniel15 having very strong feelings on this PR either way would be valued input.

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I doubt we'll add additional executables other than yarn and yarnpkg so I think it's fine to just hard-code those two. I don't know enough about Homebrew to have strong feelings either way.

The executables are in a bin directory, could Homebrew just link all the extensionless files in the bin directory? https://github.com/yarnpkg/yarn/tree/master/bin

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@Daniel15 That's what I had at the start (well, I linked all files in bin, but still), but the yarn executable in there was unable to properly follow symlinks (or it followed symlinks it shouldn't, not sure?), so I ended in the situation I describe in the OP

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$ readlink /usr/local/bin/yarn
../Cellar/yarn/0.21.3/bin/yarn
$ realpath /usr/local/bin/yarn
/usr/local/Cellar/yarn/0.21.3/libexec/bin/yarn.js

Can realpath be trusted to exist on the platforms that runs that shellscript? readlink -f isn't available on Mac

Although yarnpkg just runs yarn.js, it doesn't do the stuff yarn does. Is that by design?

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SimenB commented Apr 5, 2017

@MikeMcQuaid Changed the symlinking to read paths and binaries from package.json

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ilovezfs commented Apr 5, 2017

That seems overly complex given what Daniel said above.

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SimenB commented Apr 5, 2017

Like I replied there, it doesn't work. That was the whole trouble I had in the OP, since I just symlinked the whole bin folder. In addition to non-working scripts, I also got extra files linked. I can filter those out, or just use a whitelist, but then it isn't really any less complex, IMO 😄

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ilovezfs commented Apr 5, 2017

I would hard code the list not parse json.

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Daniel15 commented Apr 5, 2017

The code in this PR seems reasonable to me. It's up to the Homebrew maintainers though :)

Formula/yarn.rb Outdated
bin.install_symlink Dir["#{libexec}/bin/*"]
inreplace "#{libexec}/lib/node_modules/yarn/package.json", '"installationMethod": "tar"', '"installationMethod": "homebrew"'
libexec.install Dir["*"]
package_json = JSON.parse File.read("#{libexec}/package.json")
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If we're going down this road of parsing these json packaging files ourselves, which I don't think is advisable, it would belong in the brew backend with a DSL, not proliferated throughout formulae.

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That I can agree on, I was actually thinking the exact same thing 😄

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Daniel15 commented Apr 5, 2017

Yeah hardcoding yarn and yarnpkg would be fine too. We do that in Yarn itself for things like the Debian package.

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ilovezfs commented Apr 5, 2017

Yeah hardcoding yarn and yarnpkg would be fine too. We do that in Yarn itself for things like the Debian package.

This.

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SimenB commented Apr 5, 2017

I would hard code the list not parse json.

That's what I had. And again, the extensionless files in /bin doesn't work, so that would require some work over in Yarn as well.
And the old solution symlinked the symlinks I'm now creating manually, it didn't use the included executables.

If it's ok to hardcode to bin/yarn.js I can do that? That is what I had before though, see #11881 (comment)

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ilovezfs commented Apr 5, 2017

@SimenB Yes, but now we have new information since Daniel said, "I doubt we'll add additional executables other than yarn and yarnpkg so I think it's fine to just hard-code those two."

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Daniel15 commented Apr 5, 2017

@SimenB Here's the Debian package script, for reference: https://github.com/yarnpkg/yarn/blob/fda53e97b07d32982d9ada611588d4baedc7ff51/scripts/build-deb.sh#L57-L59. In the Debian package, we symlink /usr/bin/yarn to /usr/share/yarn/bin/yarn, where /usr/share/yarn/bin/yarn is bin/yarn from the Yarn repo/tarball. Couldn't you do the same thing?

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SimenB commented Apr 5, 2017

Cool, I'll revert the changes I did today 😄

@Daniel15 No, readlink returns a relative path, and while yarnpkg/yarn#2441 fixes it for GNU readlinks, on Mac you get illegal option -- f. If yarn can use realpath instead of readlink that would fix it, but I'm not sure how viable that is.

Basically yarnpkg/yarn#2511

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Daniel15 commented Apr 5, 2017

Oh yeah, I always forget that Mac uses BSD tools rather than GNU tools 😛

If you like, you could modify Yarn's bin/yarn shell script to use the right command based on the environment? It already has some hacks for Cygwin/MinGW on Windows.

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SimenB commented Apr 5, 2017

I can try sending a PR for it sure, but then we'd have to hold off on this PR until a new (stable) release of yarn. No biggie of course 😄

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ilovezfs commented Apr 5, 2017

If you like, you could modify Yarn's bin/yarn shell script to use the right command based on the environment? It already has some hacks for Cygwin/MinGW on Windows.

Yeah it would be great to have a BSD friendly shell script. Note that realpath itself isn't a command on macOS, but only available as

char * realpath(const char *restrict file_name, char *restrict resolved_name);

(unless you've installed coreutils, but that's a pretty heavy dependency to add, which wouldn't pass the smell test.)

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ilovezfs commented Apr 5, 2017

I can try sending a PR for it sure, but then we'd have to hold off on this PR until a new (stable) release of yarn.

Assuming upstream indicated an intent to accept that PR, we could always apply it as a patch here.

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SimenB commented Apr 5, 2017

We can merge this linking yarn.js and if we can make the bin/yarn behave better update what we link?

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ilovezfs commented Apr 5, 2017

We can merge this linking yarn.js and if we can make the bin/yarn behave better update what we link?

Yes, whatever works properly without adding unnecessary dependencies! :)

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SimenB commented Apr 5, 2017

Ok, removed the changes involving package.json

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ilovezfs commented Apr 5, 2017

This seems fine to me as long as it's well tested before it goes in.

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SimenB commented Apr 5, 2017

I have tested it on my personal Mac and the one I use at work. Is there any more testing I can do?

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ilovezfs commented Apr 5, 2017

@SimenB You could try it with #11991 which wants to use yarn as a dependency, and with lumo, which already does https://github.com/Homebrew/homebrew-core/blob/master/Formula/lumo.rb#L17 but won't have been tested by CI since it's build-time only.

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SimenB commented Apr 5, 2017

Lumo worked fine. Grafana had some issue. I don't think it's the installed yarn's fault, though, as I get the same error with the yarn installed from master.

$ brew install grafana
==> Downloading https://homebrew.bintray.com/bottles/grafana-4.2.0.sierra.bottle.tar.gz

curl: (22) The requested URL returned error: 401 Unauthorized
Error: Failed to download resource "grafana"
Download failed: https://homebrew.bintray.com/bottles/grafana-4.2.0.sierra.bottle.tar.gz
Warning: Bottle installation failed: building from source.
==> Using the sandbox
==> Downloading https://github.com/grafana/grafana/archive/v4.2.0.tar.gz
==> Downloading from https://codeload.github.com/grafana/grafana/tar.gz/v4.2.0
######################################################################## 100.0%
==> go run build.go build
==> yarn install
==> npm install grunt-cli --verbose
==> node_modules/grunt-cli/bin/grunt build
Last 15 lines from /Users/simen/Library/Logs/Homebrew/grafana/04.grunt:

05 04 2017 08:25:24.031:ERROR [launcher]: Cannot start PhantomJS

05 04 2017 08:25:24.034:INFO [launcher]: Trying to start PhantomJS again (2/2).
05 04 2017 08:25:24.950:ERROR [phantomjs.launcher]: 2017-04-05 08:25:24.950 phantomjs[88158:459644] -[_NSXPCDistantObjectWithError performScanWithChannels:ssidList:legacyScanSSID:includeHiddenNetworks:mergeScanResults:maxAge:maxMissCount:maxWakeCount:maxAutoJoinCount:interfaceName:waitForWiFi:waitForBluetooth:token:priority:reply:]: unrecognized selector sent to instance 0x7fe033808f40

05 04 2017 08:25:24.951:ERROR [phantomjs.launcher]: PhantomJS has crashed. Please read the bug reporting guide at
<http://phantomjs.org/bug-reporting.html> and file a bug report.

05 04 2017 08:25:24.953:ERROR [launcher]: Cannot start PhantomJS

05 04 2017 08:25:24.955:ERROR [launcher]: PhantomJS failed 2 times (cannot start). Giving up.
Warning: Task "karma:test" failed. Use --force to continue.

Aborted due to warnings.

READ THIS: http://docs.brew.sh/Troubleshooting.html

These open issues may also help:
Grafana v4.2.0 https://github.com/Homebrew/homebrew-core/pull/11991

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ilovezfs commented Apr 5, 2017

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ilovezfs commented Apr 5, 2017

@SimenB I think you can also make this bottle :unneeded now.

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SimenB commented Apr 5, 2017

What does bottle :unneeded do?

Building grafana with this diff from #11991 now

diff --git i/Formula/grafana.rb w/Formula/grafana.rb
index 49b03993f..0e15a2d14 100644
--- i/Formula/grafana.rb
+++ w/Formula/grafana.rb
@@ -27,7 +27,10 @@ class Grafana < Formula
       system "go", "run", "build.go", "build"
       system "yarn", "install"
       system "npm", "install", "grunt-cli", *Language::Node.local_npm_install_args
-      system "node_modules/grunt-cli/bin/grunt", "build"
+      args = ["build"]
+      # Avoid PhantomJS error "unrecognized selector sent to instance"
+      args << "--force" unless build.bottle?
+      system "node_modules/grunt-cli/bin/grunt", *args
 
       bin.install "bin/grafana-cli"
       bin.install "bin/grafana-server"

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ilovezfs commented Apr 5, 2017

What does bottle :unneeded do?

It's a replacement for the bottle block, which you'll delete as well.

The users will brew install yarn, triggering a download of https://yarnpkg.com/downloads/0.21.3/yarn-v0.21.3.tar.gz instead of a Bintray bottle, and then it will execute your install method.

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SimenB commented Apr 5, 2017

Grafana passed with --force. And added bottle :unneeded, thanks!

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ilovezfs commented Apr 5, 2017

Grafana passed with --force.

Great!

Do you mind opening an issue in the yarn issue tracker about the script issue with BSD userland?

@@ -1,26 +1,19 @@
require "language/node"

class Yarn < Formula
desc "JavaScript package manager"
homepage "https://yarnpkg.com/"
url "https://yarnpkg.com/downloads/0.21.3/yarn-v0.21.3.tar.gz"
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Since it's bottle :unneeded now, please also add

mirror "https://github.com/yarnpkg/yarn/releases/download/v0.21.3/yarn-v0.21.3.tar.gz"

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What does mirror do? The Yarn download URL just redirects to the GitHub one (we use the yarnpkg.com URL so we're not tightly-coupled with Github's release system) so it's technically not a mirror, it's exactly the same 😛

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Plot foiled! In that case it would only help if yarnpkg.com went down.

I guess we could use http://distfiles.gentoo.org/distfiles/yarn-v0.21.3.tar.gz or be mirror-less.

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You could keep the mirror just in case yarnpkg.com goes down, but the Windows Chocolatey package also uses yarnpkg.com and I haven't seen any reports of being unable to hit yarnpkg.com.

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ilovezfs commented Apr 5, 2017

@Daniel15 any changes you'd like to see here before we 🚢?

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Daniel15 commented Apr 5, 2017

@ilovezfs It seems reasonable to me, but as I mentioned earlier I'm not very familiar with Homebrew (I used it back when I had a Mac, but I switched back to a PC around a year ago).

By the way, do you really love ZFS? 😄

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ilovezfs commented Apr 5, 2017

but I switched back to a PC around a year ago

Heresy!

By the way, do you really love ZFS?

Yes: https://openzfsonosx.org/

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@Daniel15 @SimenB I'm not happy with the current confidence level of "I doubt we'll add additional executables other than yarn and yarnpkg so I think it's fine to just hard-code those two." personally.

What will happen for updates of Yarn is that someone will submit a PR to bump to the next version whenever it comes out. If Yarn ever does include additional executables, manpages, etc. then someone will need to notice and update the formula and until then Yarn and Homebrew both end up with a substandard situation.

This is why for similar e.g. C/C++ projects we strongly recommend having and using a make install so that upstream is control of what files get installed.

Thoughts?

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SimenB commented Apr 5, 2017

@MikeMcQuaid There are plans to automate PRs to brew with every release of yarn: yarnpkg/yarn#2841. I would think that if other binaries are added, and the Debian script needs to be updated, someone™️ would remember to also make sure the linked binaries are correct.

I did have a solution that checked the bin entry in package.json, but we concluded that it was a bit too complex for little gain

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I would think that if other binaries are added, and the Debian script needs to be updated, someone™️ would remember to also make sure the linked binaries are correct.

I also just saw the Debian script. I think ideally there'd be a Unix install script (which the Debian one could call, even) which installed to a given PREFIX. If this logic lives in yarn's repo: I have no issue with it 👍

I did have a solution that checked the bin entry in package.json, but we concluded that it was a bit too complex for little gain

Yeh, I appreciate you investigating that 🙇.

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ilovezfs commented Apr 5, 2017

I think ideally there'd be a Unix install script (which the Debian one could call, even) which installed to a given PREFIX.

@Daniel15 that sure would be nice! 😇

@@ -1,26 +1,19 @@
require "language/node"

class Yarn < Formula
desc "JavaScript package manager"
homepage "https://yarnpkg.com/"
url "https://yarnpkg.com/downloads/0.21.3/yarn-v0.21.3.tar.gz"
sha256 "0946a4d1abc106c131b700cc31e5c3aa5f2205eb3bb9d17411f8115354a97d5d"
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@SimenB let's add

revision 1

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Done. What about mirror?

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I think we can go without for now since it's unlikely yarnpkg.com won't resolve

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You'll need to move revision above head or it won't pass brew audit --strict

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@SimenB SimenB Apr 5, 2017

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I'm currently getting this:

$ brew audit --strict yarn
Error: Error running `rubocop --format json --force-exclusion --config /usr/local/Homebrew/Library/.rubocop.yml /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/yarn.rb`

What am I doing wrong?

I did move it though, hopefully no other errors 😄

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You can probably fix that by blowing away your ~/.gem directory

@ilovezfs ilovezfs merged commit 7ecb55f into Homebrew:master Apr 5, 2017
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ilovezfs commented Apr 5, 2017

Shipped! 🚀

Thanks @SimenB for the PR and @Daniel15 for the help.

@SimenB SimenB deleted the yarn-no-npm branch April 5, 2017 11:07
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