ELIFECYCLE with Nix NPM when creating TTF

[jhilker98]

Hey there, thanks for maintaining this.

I've been trying to use my custom build plans whenever I build the font, but when I use version 15.6.0, I get this error after creating the unhinted ttf:

Building process terminated.npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! iosevka@15.6.0 build: `node utility/ensure-verda-exists && verda -f verdafile.js "ttf::josevka-book-sans"`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the iosevka@15.6.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2022-07-19T16_22_57_793Z-debug.log

Here's the debug log - I found it odd that docker was using Node 14, when the version of node I've installed with nix is v16.15.0.

0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli   '/usr/bin/node',
1 verbose cli   '/usr/bin/npm',
1 verbose cli   'run',
1 verbose cli   'build',
1 verbose cli   '--',
1 verbose cli   'ttf::josevka-book-sans'
1 verbose cli ]
2 info using npm@6.14.8
3 info using node@v14.15.1
4 verbose run-script [ 'prebuild', 'build', 'postbuild' ]
5 info lifecycle iosevka@15.6.0~prebuild: iosevka@15.6.0
6 info lifecycle iosevka@15.6.0~build: iosevka@15.6.0
7 verbose lifecycle iosevka@15.6.0~build: unsafe-perm in lifecycle true
8 verbose lifecycle iosevka@15.6.0~build: PATH: /usr/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/tmp/build/Iosevka-15.6.0/node_modules/.bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
9 verbose lifecycle iosevka@15.6.0~build: CWD: /tmp/build/Iosevka-15.6.0
10 silly lifecycle iosevka@15.6.0~build: Args: [
10 silly lifecycle   '-c',
10 silly lifecycle   'node utility/ensure-verda-exists && verda -f verdafile.js "ttf::josevka-book-sans"'
10 silly lifecycle ]
11 silly lifecycle iosevka@15.6.0~build: Returned: code: 1  signal: null
12 info lifecycle iosevka@15.6.0~build: Failed to exec build script
13 verbose stack Error: iosevka@15.6.0 build: `node utility/ensure-verda-exists && verda -f verdafile.js "ttf::josevka-book-sans"`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)
13 verbose stack     at EventEmitter.emit (events.js:315:20)
13 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:315:20)
13 verbose stack     at maybeClose (internal/child_process.js:1048:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:288:5)
14 verbose pkgid iosevka@15.6.0
15 verbose cwd /tmp/build/Iosevka-15.6.0
16 verbose Linux 5.10.16.3-microsoft-standard-WSL2
17 verbose argv "/usr/bin/node" "/usr/bin/npm" "run" "build" "--" "ttf::josevka-book-sans"
18 verbose node v14.15.1
19 verbose npm  v6.14.8
20 error code ELIFECYCLE
21 error errno 1
22 error iosevka@15.6.0 build: `node utility/ensure-verda-exists && verda -f verdafile.js "ttf::josevka-book-sans"`
22 error Exit status 1
23 error Failed at the iosevka@15.6.0 build script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

I'm currently using WSL2 with Ubuntu as my distribution - do you have any suggestions for how to fix this? I tried with v15.6.0 and v15.5.2, but I still am not sure. I'm also using Nix with NPM, if that might have anything to do with it.