Yarn fakeroot problems

[joshkel]

Do you want to request a feature or report a bug?

Bug

What is the current behavior?

I have a Debian package that invokes Yarn during the install step.

Under Yarn 0.18.1 and previous versions, this worked fine. Starting with Yarn 0.19.1, it fails:

dh binary
   dh_testroot
   dh_prep
   dh_auto_install
make[2]: Entering directory `<http://jenkins:8080/job/Nightly/ws/build-area/package-2.0.2'>
make install
yarn  --pure-lockfile
/usr/share/yarn/node_modules/mkdirp/index.js:90
                    throw err0;
                    ^

Error: EACCES: permission denied, mkdir '/usr/local/share/.cache'
    at Error (native)
    at Object.fs.mkdirSync (fs.js:922:18)
    at sync (/usr/share/yarn/node_modules/mkdirp/index.js:71:13)
    at Function.sync (/usr/share/yarn/node_modules/mkdirp/index.js:77:24)
    at Object.<anonymous> (/usr/share/yarn/bin/yarn.js:30:8)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)

If the current behavior is a bug, please provide the steps to reproduce.

fakeroot yarn add lodash

What is the expected behavior?

fakeroot yarn should work as well as running yarn by itself does.

I believe that this issue was introduced by #2150. Since fakeroot is commonly used in building Debian packages,

fakeroot sets the FAKEROOTKEY environment variable (see here), so one possible fix is to only switch to /usr/local/share if isRootUser(getUid()) && process.env.FAKEROOTKEY == null.

Please mention your node.js, yarn and operating system version.

Node 6.9.4
Yarn 0.19.1
Ubuntu 14.04

[steppefox]

I have the same problem T__T

[swilde]

same here

[swilde]

On a second look, the version I experience the problem with are different,

Using 0.21.3-1 debian package generation using fakeroot works.
But with 0.23.4-1 it fails.