Motivation for this change

buildNodePackage replaces impure version specs in package.json before npm install.

It currently changes package like these:

{
  "dependencies": {
    "package1":"latest"
  }
}

To:

{
  "dependencies": {
    "package1":"*"
  }
}

such that packages fetched by nix is used, pureness is maintained.

However it does not handle the case of empty version string (""), which is same as "latest".

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.