title: Problem with yarn trying to install node-sass
body: <p>I'm a new member in a Web project that uses <code>yarn</code> instead of <code>npm</code>. And also some additional libraries and configurations that I do not used to use.</p>
  <p>The thing is, I'm been struggling for some time I'm trying to install node-sass into my machine using yarn.
  <code>yarn add node-sass</code>
  But the instruction gives me an error.</p>
  <p>I tried to install multiples versions of NodeJS, I installed yarn, python 2.7 (Including config the Windows Environments Variables).</p>
  <p>Also, I installed the windows-build-tools:
  <code>npm install --global --production windows-build-tools</code></p>
  <p>And also installed the node-gyp:
  <code>npm install --global node-gyp</code></p>
  <p>I only have installed Visual Studio 2019. The .Net Framework 4.5.1</p>
  <p>If somebody has an idea why this problem happens will be appreciated!</p>
  <p>Log with the error:</p>
  <pre><code>yarn add node-sass
  yarn add v1.22.5
  [1/5] Validating package.json...
  [2/5] Resolving packages...
  warning node-sass &gt; node-gyp &gt; request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
  [3/5] Fetching packages...
  info fsevents@2.1.2: The platform &quot;win32&quot; is incompatible with this module.
  info &quot;fsevents@2.1.2&quot; is an optional dependency and failed compatibility check. Excluding it from installation.
  info fsevents@1.2.11: The platform &quot;win32&quot; is incompatible with this module.
  info &quot;fsevents@1.2.11&quot; is an optional dependency and failed compatibility check. Excluding it from installation.
  [4/5] Linking dependencies...
  warning &quot; &gt; vuex-persist@2.1.0&quot; has unmet peer dependency &quot;vuex@&gt;=2.5&quot;.
  warning &quot;@vue/eslint-config-standard &gt; eslint-import-resolver-webpack@0.12.1&quot; has unmet peer dependency &quot;webpack@&gt;=1.11.0&quot;.
  warning &quot; &gt; eslint-loader@3.0.3&quot; has unmet peer dependency &quot;webpack@^4.0.0 || ^5.0.0&quot;.
  [5/5] Building fresh packages...
  [-/5] ⠂ waiting...
  [-/5] ⠂ waiting...
  [3/5] ⠂ node-sass
  [-/5] ⠂ waiting...
  error C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass: Command failed.
  Exit code: 1
  Command: node scripts/build.js
  Arguments: 
  Directory: C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass
  Output:
  Building: C:\Program Files\nodejs\node.exe C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
  gyp info it worked if it ends with ok
  gyp verb cli [
  gyp verb cli   'C:\\Program Files\\nodejs\\node.exe',
  gyp verb cli   'C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\bin\\node-gyp.js',
  gyp verb cli   'rebuild',
  gyp verb cli   '--verbose',
  gyp verb cli   '--libsass_ext=',
  gyp verb cli   '--libsass_cflags=',
  gyp verb cli   '--libsass_ldflags=',
  gyp verb cli   '--libsass_library='
  gyp verb cli ]
  gyp info using node-gyp@3.8.0
  gyp info using node@12.16.1 | win32 | x64
  gyp verb command rebuild []
  gyp verb command clean []
  gyp verb clean removing &quot;build&quot; directory
  gyp verb command configure []
  gyp verb check python checking for Python executable &quot;python2.7&quot; in the PATH
  gyp verb `which` failed Error: not found: python2.7
  gyp verb `which` failed     at getNotFoundError (C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:13:12)
  gyp verb `which` failed     at F (C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:68:19)
  gyp verb `which` failed     at E (C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:80:29)
  gyp verb `which` failed     at C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:89:16gyp verb `which` failed     at C:\bitbucket\dcu-feature\node_modules\isexe\index.js:42:5
  gyp verb `which` failed     at C:\bitbucket\dcu-feature\node_modules\isexe\windows.js:36:5
  gyp verb `which` failed     at FSReqCallback.oncomplete (fs.js:166:21)
  gyp verb `which` failed  python2.7 Error: not found: python2.7
  gyp verb `which` failed     at getNotFoundError (C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:13:12)
  gyp verb `which` failed     at F (C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:68:19)
  gyp verb `which` failed     at E (C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:80:29)
  gyp verb `which` failed     at C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-gyp\node_modules\which\which.js:89:16gyp verb `which` failed     at C:\bitbucket\dcu-feature\node_modules\isexe\index.js:42:5
  gyp verb `which` failed     at C:\bitbucket\dcu-feature\node_modules\isexe\windows.js:36:5
  gyp verb `which` failed     at FSReqCallback.oncomplete (fs.js:166:21) {
  gyp verb `which` failed   stack: 'Error: not found: python2.7\n' +
  gyp verb `which` failed     '    at getNotFoundError (C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\node_modules\\which\\which.js:13:12)\n' +
  gyp verb `which` failed     '    at F (C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\node_modules\\which\\which.js:68:19)\n' +
  gyp verb `which` failed     '    at E (C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\node_modules\\which\\which.js:80:29)\n' +
  gyp verb `which` failed     '    at C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\node_modules\\which\\which.js:89:16\n' +
  gyp verb `which` failed     '    at C:\\bitbucket\\dcu-feature\\node_modules\\isexe\\index.js:42:5\n' +
  gyp verb `which` failed     '    at C:\\bitbucket\\dcu-feature\\node_modules\\isexe\\windows.js:36:5\n' +
  gyp verb `which` failed     '    at FSReqCallback.oncomplete (fs.js:166:21)',
  gyp verb `which` failed   code: 'ENOENT'
  gyp verb `which` failed }
  gyp verb could not find &quot;python2.7&quot;. checking python launcher
  gyp verb could not find &quot;python2.7&quot;. guessing location
  gyp verb ensuring that file exists: C:\Python27\python.exe
  gyp verb check python version `C:\Python27\python.exe -c &quot;import sys; print &quot;2.7.15
  gyp verb check python version .%s.%s&quot; % sys.version_info[:3];&quot;` returned: %j
  gyp verb get node dir no --target version specified, falling back to host node version: 12.16.1
  gyp verb command install [ '12.16.1' ]
  gyp verb install input version string &quot;12.16.1&quot;
  gyp verb install installing version: 12.16.1
  gyp verb install --ensure was passed, so won't reinstall if already installed
  gyp verb install version is already installed, need to check &quot;installVersion&quot;
  gyp verb got &quot;installVersion&quot; 9
  gyp verb needs &quot;installVersion&quot; 9
  gyp verb install version is good
  gyp verb get node dir target node version installed: 12.16.1
  gyp verb build dir attempting to create &quot;build&quot; dir: C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass\build     
  gyp verb build dir &quot;build&quot; dir needed to be created? C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass\build     
  gyp verb find vs2017 Found installation at: C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional
  gyp verb find vs2017   - Found Microsoft.VisualStudio.Component.VC.Tools.x86.x64
  gyp verb find vs2017   - Found Microsoft.VisualStudio.Component.Windows10SDK.17763
  gyp verb find vs2017   - Found Microsoft.VisualStudio.VC.MSBuild.Base
  gyp verb find vs2017   - Found Microsoft.VisualStudio.Component.Windows10SDK.18362
  gyp verb find vs2017   - Found Microsoft.VisualStudio.Component.Windows10SDK.16299
  gyp verb find vs2017   - Found Microsoft.VisualStudio.Component.Windows10SDK.17134
  gyp verb find vs2017   - Using this installation with Windows 10 SDK
  gyp verb find vs2017 using installation: C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional
  gyp verb build/config.gypi creating config file
  gyp verb build/config.gypi writing out config file: C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass\build\config.gypi
  gyp verb config.gypi checking for gypi file: C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass\config.gypi       
  gyp verb common.gypi checking for gypi file: C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass\common.gypi       
  gyp verb gyp gyp format was not specified; forcing &quot;msvs&quot;
  gyp info spawn C:\Python27\python.exe
  gyp info spawn args [
  gyp info spawn args   'C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\gyp\\gyp_main.py',
  gyp info spawn args   'binding.gyp',
  gyp info spawn args   '-f',
  gyp info spawn args   'msvs',
  gyp info spawn args   '-G',
  gyp info spawn args   'msvs_version=2015',
  gyp info spawn args   '-I',
  gyp info spawn args   'C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-sass\\build\\config.gypi',
  gyp info spawn args   '-I',
  gyp info spawn args   'C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\addon.gypi',
  gyp info spawn args   '-I',
  gyp info spawn args   'C:\\Users\\m_bolanos-v\\.node-gyp\\12.16.1\\include\\node\\common.gypi',
  gyp info spawn args   '-Dlibrary=shared_library',
  gyp info spawn args   '-Dvisibility=default',
  gyp info spawn args   '-Dnode_root_dir=C:\\Users\\m_bolanos-v\\.node-gyp\\12.16.1',
  gyp info spawn args   '-Dnode_gyp_dir=C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp',
  gyp info spawn args   '-Dnode_lib_file=C:\\Users\\m_bolanos-v\\.node-gyp\\12.16.1\\&lt;(target_arch)\\node.lib',
  gyp info spawn args   '-Dmodule_root_dir=C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-sass',
  gyp info spawn args   '-Dnode_engine=v8',
  gyp info spawn args   '--depth=.',
  gyp info spawn args   '--no-parallel',
  gyp info spawn args   '--generator-output',
  gyp info spawn args   'C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-sass\\build',
  gyp info spawn args   '-Goutput_dir=.'
  gyp info spawn args ]
  gyp verb command build []
  gyp verb build type Release
  gyp verb architecture x64
  gyp verb node dev dir C:\Users\m_bolanos-v\.node-gyp\12.16.1
  gyp verb found first Solution file build/binding.sln
  gyp verb using MSBuild: C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\15.0\Bin\MSBuild.exe
  gyp info spawn C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\15.0\Bin\MSBuild.exe
  gyp info spawn args [
  gyp info spawn args   'build/binding.sln',
  gyp info spawn args   '/nologo',
  gyp info spawn args   '/p:Configuration=Release;Platform=x64'
  gyp info spawn args ]
  gyp ERR! UNCAUGHT EXCEPTION
  gyp ERR! stack Error: spawn C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\15.0\Bin\MSBuild.exe ENOENT        
  gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
  gyp ERR! stack     at onErrorNT (internal/child_process.js:469:16)
  gyp ERR! stack     at processTicksAndRejections (internal/process/task_queues.js:84:21)
  gyp ERR! System Windows_NT 10.0.19041
  gyp ERR! command &quot;C:\\Program Files\\nodejs\\node.exe&quot; &quot;C:\\bitbucket\\dcu-feature\\node_modules\\@quasar\\app\\node_modules\\node-gyp\\bin\\node-gyp.js&quot; &quot;rebuild&quot; &quot;--verbose&quot; &quot;--libsass_ext=&quot; &quot;--libsass_cflags=&quot; &quot;--libsass_ldflags=&quot; &quot;--libsass_library=&quot;
  gyp ERR! cwd C:\bitbucket\dcu-feature\node_modules\@quasar\app\node_modules\node-sass
  gyp ERR! node -v v12.16.1
  gyp ERR! node-gyp -v v3.8.0
  gyp ERR! This is a bug in `node-gyp`.
  </code></pre>