lerna: repackage with buildNpmPackage

[Thao-Tran]

Repackage nodePackages.lerna to be built using buildNpmPackage and create variants for lerna_6 and lerna_8.

Refs: #229475

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 25.05 Release Notes (or backporting 24.11 and 25.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[Thao-Tran]

Unfortunately needed to include the package-lock files because the one to the GitHub repo isn't compatible with cached installs.

[SuperSandro2000]

Since we now commit the lockfile, do we really need to keep 2 versions? is version 8 not enough?

[Thao-Tran]

@SuperSandro2000 I added a v6 variant because it's the version that I need to use for my company's codebase since v8 introduced a lot of breaking changes, but I understand if having two lockfiles is too much. Let me know if you have a strong opposition to maintaining both versions and I can just keep it in my nixpkgs fork instead.

Hmm I am wondering now though, would it be considered bad practice if I changed this to point to a personal fork of lerna that actually provides a proper lockfile for both versions, so we don't have to keep the lockfile in the nixpkgs VCS?

[SuperSandro2000]

I am just going to assume that this is a general thing and we merge this for now :)

Hmm I am wondering now though, would it be considered bad practice if I changed this to point to a personal fork of lerna that actually provides a proper lockfile for both versions, so we don't have to keep the lockfile in the nixpkgs VCS?

That makes it harder for everyone to update.