ember-cli: ember build fails because broccoli-funnel can’t symlink tmp file

Output from ember version --verbose && npm --version:

Could not start watchman; falling back to NodeWatcher for file system events.
Visit http://ember-cli.com/user-guide/#watchman for more info.
ember-cli: 2.8.0
http_parser: 2.7.0
node: 4.8.1
v8: 4.5.103.46
uv: 1.11.0
zlib: 1.2.11
ares: 1.10.1-DEV
modules: 46
openssl: 1.0.2k
os: linux x64

npm version: 2.15.11

I’m trying to build our ember app in a nix build environment (basically extracts the source, makes it writable, disables network and chroots to /tmp/nix-build-something). broccoli fails to link some files from a tmp dir that doesn’t exist.

What does exist after the failed build is '/tmp/nix-build-nixcloud-ember.drv-0/nixcloud-ember/, but tmp/funnel-input_base_path-Uvk2rb5J.tmp/index.html does not. Maybe part of it is deleted in cleanup.

I’m at my wit’s end here, I went through the call stack, but there’s a lot of file logic there which I haven’t quite deciphered. When building the project in the development folder, it works just fine, creating a ./tmp that is not removed afterwards, but empty. So probably the tmp logic is broken somewhere or depends on something that is not available in the stripped-down build environment?

> nixcloud-editor@0.0.1 build /tmp/nix-build-nixcloud-ember.drv-0/nixcloud-ember
> ember build

{ Error: getaddrinfo ENOTFOUND google-analytics.com google-analytics.com:443
    at errnoException (dns.js:28:10)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)
  code: 'ENOTFOUND',
  errno: 'ENOTFOUND',
  syscall: 'getaddrinfo',
  hostname: 'google-analytics.com',
  host: 'google-analytics.com',
  port: 443 }
Could not start watchman; falling back to NodeWatcher for file system events.
Visit http://ember-cli.com/user-guide/#watchman for more info.
Build failed.
The Broccoli Plugin: [Funnel: Funnel: index.html] failed with:
Error: ENOENT: no such file or directory, lstat '/tmp/nix-build-nixcloud-ember.drv-0/nixcloud-ember/tmp/funnel-input_base_path-Uvk2rb5J.tmp/index.html'
    at Error (native)
    at Object.fs.lstatSync (fs.js:982:18)
    at symlink (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/symlink-or-copy/index.js:79:26)
    at Function.symlinkOrCopySync [as sync] (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/symlink-or-copy/index.js:65:5)
    at Funnel._copy (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/broccoli-funnel/index.js:467:19)
    at Funnel.processFile (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/broccoli-funnel/index.js:450:8)
    at Funnel.applyPatch [as _applyPatch] (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/broccoli-funnel/index.js:367:12)
    at Funnel.<anonymous> (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/broccoli-funnel/index.js:321:10)
    at Array.forEach (native)
    at Funnel.processFilters (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/broccoli-funnel/index.js:320:11)

The broccoli plugin was instantiated at: 
    at Funnel.Plugin (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/broccoli-plugin/index.js:7:31)
    at new Funnel (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/broccoli-funnel/index.js:58:10)
    at EmberApp.index (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/ember-cli/lib/broccoli/ember-app.js:641:15)
    at EmberApp.toArray (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/ember-cli/lib/broccoli/ember-app.js:1605:10)
    at EmberApp.toTree (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/ember-cli/lib/broccoli/ember-app.js:1628:30)
    at module.exports (/tmp/nix-build-nixcloud-ember.drv-0/nixcloud-ember/ember-cli-build.js:68:14)
    at CoreObject.setupBroccoliBuilder (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/ember-cli/lib/models/builder.js:74:19)
    at CoreObject.init (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/ember-cli/lib/models/builder.js:54:10)
    at CoreObject.superWrapper [as init] (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/core-object/lib/assign-properties.js:32:18)
    at CoreObject.Class (/nix/store/9x3xir1k5vxz8ysf8bgww9bgf6li10bk-node-nixcloud-editor-0.0.1/lib/node_modules/nixcloud-editor/node_modules/core-object/core-object.js:32:33)



npm ERR! Linux 4.9.24
npm ERR! argv "/nix/store/dq5lg1gsyzlmblvsbcxqjgjllwvxnnsk-nodejs-6.9.5/bin/node" "/nix/store/dq5lg1gsyzlmblvsbcxqjgjllwvxnnsk-nodejs-6.9.5/bin/npm" "run" "build"
npm ERR! node v6.9.5
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! nixcloud-editor@0.0.1 build: `ember build`
npm ERR! Exit status 1