pnpm root -g EROFS: read-only file system on NixOS

[vyorkin]

eslint server tries to run the

$pnpm root -g                                                                                                                          

which results in error:

 ERROR  EROFS: read-only file system, open '/nix/store/yriqd0gdmlpfvlwzkq1d303d3appnwwi-nodejs-12.18.3/bin/_tmp_29693_1f5bd2552f0cc9720c2e495cff368f3b'

on NixOS (which is not FHS compliant)

[milahu]

fix packages/global-bin-dir/src/index.ts

  function canWriteToDirAndExists (dir: string) {
    try {
      return canWriteToDir(dir)
    } catch (err) {
-     if (err.code !== 'ENOENT') throw err
+     if (err.code !== 'ENOENT' && err.code !== 'EROFS') throw err
      return false
    }
  }

to get pnpm i -g working

echo 'export PATH="$HOME/.npm-global/bin:$PATH"' >>~/.bashrc
echo "prefix=$HOME/.npm-global/" >>~/.npmrc
source ~/.bashrc
pnpm i -g dummy-package

maybe pnpm should print a warning if ${prefix}/bin is not in $PATH?