Why is yarn a direct dependency?

[ahmedelgabri]

Any specific reason behind that?

plugin-plugins/package.json

Line 19 in 2281e86

"yarn": "^1.13.0"

This can cause lots of issues, if a package that depends on plugin-plugins is installed globally yarn will then symlink everything in the global node_modules/.bin to /usr/local/bin in this case your yarn version will override the system yarn version.

[calavera]

is this a valid suggestion @ahmedelgabri ?

That's a tough one, I understand that @oclif/plugin-plugins uses yarn internally. But also overriding system installed yarn is 100% not desired. Maybe they should move it as a peerDependency or something.

[ahmedelgabri]

I dunno to be honest, peerDependencies also comes with its own set of issues, on top of my head if someone updated their yarn to a new version that's not compatible with the package then the package will not work. Which then reflect badly on the package authors & the package itself.

Maybe we should ask someone from the yarn team on what would they recommend. Because I see this issue becoming bigger once yarn v2 is released.

[jdx]

npm doesn't behave like you describe:

$ ll /usr/local/bin/yarn
"/usr/local/bin/yarn": No such file or directory (os error 2)
$ npm i -g @oclif/plugin-plugins
+ @oclif/[email protected]
added 74 packages from 28 contributors in 3.358s
$ ll /usr/local/bin/yarn
"/usr/local/bin/yarn": No such file or directory (os error 2)
$ ll /usr/local/bin/yar^C
$ npm i -g yarn
/usr/local/bin/yarn -> /usr/local/lib/node_modules/yarn/bin/yarn.js
/usr/local/bin/yarnpkg -> /usr/local/lib/node_modules/yarn/bin/yarn.js
+ [email protected]
added 1 package in 0.145s
$ ll /usr/local/bin/yarn
Permissions Size User    Date Modified Name
lrwxr-xr-x    36 jdickey 20 Mar  9:10  /usr/local/bin/yarn -> ../lib/node_modules/yarn/bin/yarn.js

[jdx]

Neither does yarn:

$ yarn global add @oclif/plugin-plugins
yarn global v1.13.0
[1/4] 🔍  Resolving packages...
[2/4] 🚚  Fetching packages...
[3/4] 🔗  Linking dependencies...
[4/4] 🔨  Building fresh packages...
warning "@oclif/[email protected]" has no binaries
✨  Done in 1.74s.
$ ~/s/g/o/plugin-plugins   master  cd ..
$ ~/s/g/oclif  ll /usr/local/bin/yarn
"/usr/local/bin/yarn": No such file or directory (os error 2)

[ahmedelgabri]

@jdxcode You are right, I tried this again now & it's not happening. I'll try again & check if I can replicate it again or if it has something to do with my local setup or $PATH or something.

I updated yarn though today so not sure if that has anything to do with that. But will see.

[ahmedelgabri]

@jdxcode can you run these and post the output?

yarn global bin & yarn global dir

[jdx]

$ yarn global bin
/usr/local/bin
$ yarn global dir
/Users/jdickey/.config/yarn/global

[ahmedelgabri]

Ok, I don't think it's yarn issue. But also can't find the root cause yet

I had issues way back with yarn symlinking binaries to /usr/local/bin so I had this /Users/ahmed/.config/yarn/global/node_modules/.bin in my $PATH but, my yarn global dir returns /Users/ahmed/.local/share/yarn/global though, without changing any setting or anything for yarn & there is no /Users/ahmed/.config/yarn/global folder on my system. So even the path in my $PATH can't cause this issue.

I'll close the issues I created & will investigate this more. Thanks everyone & sorry for the inconvience.

[bk3c]

FWIW, I've been struggling with the effects of this for a few months, and finally figured it out enough to find this issue. I'm pretty sure I have a reproducible case, though I can't tell if this is actually yarn being broken or misused:

• my system yarn is via homebrew
• I have two globally installed packages that depend on this one (apollo and netlify-cli), and this is the only global dependency I have on yarn
• if I wipe my global yarn.lock and node_modules and reset all of the symlinks, I can do a yarn add to recreate both with no problems at all
• as soon as I do a yarn global upgrade or yarn global upgrade-interactive, the symlinks in /usr/local/bin are overwritten and now point to ~/.config/yarn/global/node_modules/.bin/yarn
• this is 100% reproducible, at least in my environment
• it's super-annoying

Would y'all consider removing the dependency, or do we need to go file a yarn issue? Can you see if this is enough for you to reproduce the issue?

[ahmedelgabri]

I just tried this & that's exactly my issue too. @bk3c I can reopen this yarnpkg/yarn#7132 & you can add your comments there as I think it might be more of a yarn issue

[bk3c]

@ahmedelgabri Sounds good to me.

[mhnsn]

Fun fact: this borks HARD on Windows if you explicitly have script-shell=pwsh in .npmrc. You get this lovely syntax in the yarn preinstall script: pwsh -c :; (node ./preinstall.js > /dev/null 2>&1 || true). Found this out the hard way just now while trying to run oclif generate <my-cli> and then running npm i in the generated folder. I'll add the comment in the yarn issue as well.