node-sass install failing on jenkins

[ccnokes]

On my Jenkins build process, it keeps failing while attempting to install node-sass (per the gulp-sass plugin).

The issue seems to be that node is not finding a script file during install. When I pull my repo locally on the server and install it, it installs without a problem.

Here's the error output:

> node-sass@2.1.1 install /root/.jenkins/jobs/odyssey-frontend/workspace/node_modules/gulp-sass/node_modules/node-sass
> node scripts/install.js

module.js:338
    throw err;
          ^
Error: Cannot find module '/root/.jenkins/jobs/odyssey-frontend/workspace/node_modules/gulp-sass/node_modules/node-sass/scripts/install.js'
    at Function.Module._resolveFilename (module.js:336:15)
    at Function.Module._load (module.js:278:25)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3
npm ERR! Linux 3.14.35-28.38.amzn1.x86_64
npm ERR! argv "node" "/home/ec2-user/.linuxbrew/bin/npm" "install" "--production"
npm ERR! node v0.12.2
npm ERR! npm  v2.7.6
npm ERR! code ELIFECYCLE

npm ERR! node-sass@2.1.1 install: `node scripts/install.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the node-sass@2.1.1 install script 'node scripts/install.js'.
npm ERR! This is most likely a problem with the node-sass package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node scripts/install.js
npm ERR! You can get their info via:
npm ERR!     npm owner ls node-sass
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /root/.jenkins/jobs/odyssey-frontend/workspace/npm-debug.log
module.js:338
    throw err;
          ^
Error: Cannot find module 'gulp-sass'
    at Function.Module._resolveFilename (module.js:336:15)
    at Function.Module._load (module.js:278:25)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (/root/.jenkins/jobs/odyssey-frontend/workspace/gulpfile.js:11:12)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
Build step 'Execute shell' marked build as failure
Finished: FAILURE

The Linux distribution is Amazon Linux AMI, Fedora-like. Trying to install node-sass ^3.0.0 via gulp-sass ^2.0.0.

Has anyone else had a similar issue?

[xzyfer]

Hi @ccnokes, this is covered in our troubleshooting guide. https://github.com/sass/node-sass/blob/f2df3d90093adcc10dfbbefc74d3e32cdba82d2c/TROUBLESHOOTING.md#cannot-find-module-rootinstalljs

Npm prevents executing install scripts when run as root. This is a security measure in npm.

[ccnokes]

Right you are, it works once I add that flag. Sorry, I must have missed that in the docs. I appreciate your help though. Thanks!

[kishoridu]

I am getting same error for Windows 7 x64 bit system. Tried the troubleshooting guide but didn't help.
I have no errors in task runner though.