Build breaking with yarn v0.24.6 on OSX (running web + native)

[mairh]

This is just a heads up that the build is breaking when running yarn watch using v0.24.6

Failing with error

yarn watch v0.24.6
$ node tools/webpack.entry watch
Using Webpack DLL vendor bundle
[HPM] Proxy created: !/*.hot-update.{json,js}  ->  http://localhost:8080
webpack-for-web-frontend Webpack web-frontend dev server listening on 3000
webpack-for-ios-frontend Webpack ios-frontend dev server listening on 3020
{ Error: Cannot find module './build/Release/DTraceProviderBindings'
    at Function.Module._resolveFilename (module.js:485:15)
    at Function.Module._load (module.js:437:25)
    at Module.require (module.js:513:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/nish/Documents/code/easymedi/node_modules/dtrace-provider/dtrace-provider.js:17:23)
    at Module._compile (module.js:569:30)
    at Module._extensions..js (module.js:580:10)
    at Object.require.extensions.(anonymous function) [as .js] (/Users/nish/Documents/code/easymedi/node_modules/babel-register/lib/node.js:152:7)
    at Module.load (module.js:503:32)
    at tryModuleLoad (module.js:466:12)
    at Function.Module._load (module.js:458:3)
    at Module.require (module.js:513:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/nish/Documents/code/easymedi/node_modules/bunyan/lib/bunyan.js:79:18)
    at Module._compile (module.js:569:30)
    at Module._extensions..js (module.js:580:10) code: 'MODULE_NOT_FOUND' }
{ Error: Cannot find module './build/default/DTraceProviderBindings'
    at Function.Module._resolveFilename (module.js:485:15)
    at Function.Module._load (module.js:437:25)
    at Module.require (module.js:513:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/nish/Documents/code/easymedi/node_modules/dtrace-provider/dtrace-provider.js:17:23)
    at Module._compile (module.js:569:30)
    at Module._extensions..js (module.js:580:10)
    at Object.require.extensions.(anonymous function) [as .js] (/Users/nish/Documents/code/easymedi/node_modules/babel-register/lib/node.js:152:7)
    at Module.load (module.js:503:32)
    at tryModuleLoad (module.js:466:12)
    at Function.Module._load (module.js:458:3)
    at Module.require (module.js:513:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/nish/Documents/code/easymedi/node_modules/bunyan/lib/bunyan.js:79:18)
    at Module._compile (module.js:569:30)
    at Module._extensions..js (module.js:580:10) code: 'MODULE_NOT_FOUND' }
{ Error: Cannot find module './build/Debug/DTraceProviderBindings'
    at Function.Module._resolveFilename (module.js:485:15)
    at Function.Module._load (module.js:437:25)
    at Module.require (module.js:513:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/nish/Documents/code/easymedi/node_modules/dtrace-provider/dtrace-provider.js:17:23)
    at Module._compile (module.js:569:30)
    at Module._extensions..js (module.js:580:10)
    at Object.require.extensions.(anonymous function) [as .js] (/Users/nish/Documents/code/easymedi/node_modules/babel-register/lib/node.js:152:7)
    at Module.load (module.js:503:32)
    at tryModuleLoad (module.js:466:12)
    at Function.Module._load (module.js:458:3)
    at Module.require (module.js:513:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/nish/Documents/code/easymedi/node_modules/bunyan/lib/bunyan.js:79:18)
    at Module._compile (module.js:569:30)
    at Module._extensions..js (module.js:580:10) code: 'MODULE_NOT_FOUND' }

It seems like this is a common issue

trentm/node-bunyan#216
expo/create-react-native-app#135

Workaround is to use npm install and npm run watch instead of yarn and yarn watch

[OmgImAlexis]

If yarn adds a way to change the Python version being used this will be fixed as building with Python 2.7 instead of Python 3 fixes this issue.

Ref: yarnpkg/yarn#3519

[mairh]

Seem like yarn v0.24.6started working for me now. Not sure what has changed. If someone else can confirm that yarn watch is running without any problem then we can close this issue.

[larixer]

Yes, working for me now too. And I have faced this bug previously. Not sure what has changed, but it works now. Closing this issue.

[mairh]

Reopening since I am facing the same issue again using the same version.

[larixer]

@mairh Doesn't reproduces for me now

[mairh]

@Vlasenko Are you using the same yarn version?

Could you try the following options (if you haven't done already)

1. Remove build folder
2. Remove node_modules
3. Remove .expo
4. Try android: true and then with ios: true

[larixer]

Yes, I'm using the yarn 0.24.6 which is the latest stable at the moment and I'm doing fresh clone with android: true

[mairh]

Although, it shouldn't make any difference, but could be it only be happening on ios: true ?

[mairh]

@mitjade When you have time could you give it a try?

[mitjade]

@mairh Will do in a few hours.

[mitjade]

Currently it's working for me. I had some problems with yarn when I was running also iOS simulator. For web only no problems so far.

[mairh]

yes, for the web only it works fine. I'll keep this issue open for a short while and see if the yarn problem is just hit and trail or something else. Thanks for checking it out though.

[OmgImAlexis]

@mairh this issue is because of bunyan it won't just randomly go away you'll need to either switch to using npm install for now with python 2.7 set or wait for yarn to add a python flag as I stated above.

Bunyan issue: trentm/node-bunyan#216
Yarn issue: yarnpkg/yarn#3519

[larixer]

This should be fixed now via:
2af3d4a

It utilizes latest xdl, which has commit:
expo/xdl@00125da

@expo/bunyan doesn't depend on dtrace-provider that causes this problem.