Port away from flake-utils

[Naxdy]

flake-utils is currently only used for outputting system-specific dev shells. This can actually be achieved only using functionality already present within nixpkgs, thus there is no need for an extra dependency.

Additionally, we move to use the packages and env args for mkShell to more clearly outline what they are used for.

---

Further reading: https://determinate.systems/blog/best-practices-for-nix-at-work/#avoid-flake-helper-libraries-if-possible

As a side note, using with to import large scopes is discouraged by official Nix resources, so an alternative approach to list installed packages could be something like this:

packages =
  (builtins.attrValues {
    inherit (pkgs)
      # generic
      git
      git-lfs
      gnumake
      gnused
      gnutar
      gzip
      zip

      # frontend
      cairo
      pixman
      pkg-config

      # linting
      uv

      # backend
      gofumpt
      sqlite
      ;

    inherit
      # frontend
      nodejs
      pnpm

      # linting
      python3

      # backend
      go
      ;
  })
  ++ linuxOnlyInputs;

But I saw this as too pedantic to include in the initial PR.

[6543]

i dont see inputs as bad as determined systems here ... because i see no reason for somebody to use this flake as input ...

but as less dpes are better and if the flake e.g. learns to build gitea ... it is likely going to be used esternally ... so no blocker on my side ;)

[6543]

the env={} i was going to do that ... thanks for doint it now

[Naxdy]

@6543 Thanks for the feedback. I do have a private fork with a build script for gitea (including frontend + pnpm working). I was assuming there wasn't any interest in having one here since you already have a different build process, but if you want I can open a PR and work to upstream it?

It does require updating dependency hashes for go & pnpm deps on package updates however.

[techknowlogick]

@Naxdy maybe not in this repo, but the pnpm build would be very appreciated in nixpkgs when 1.25 comes out

[techknowlogick]

@Naxdy sorry, I should've said: could you share the nix build you have, as then I could port it to nixpkgs when the 1.25 release comes out for you. Nix is optional to build this repo, and we don't want to make it a hard requirement for contributors, but as youve already done the heavy lifting for pnpm that's wonderful as that's work that we don't need to replication. Thanks again:)

[Naxdy]

@techknowlogick I pushed my derivation to my nixpkgs fork here: Naxdy/nixpkgs@ba04041

Feel free to take what you want from it; you can also ping me on the nixpkgs PR once it's up :)

PS: You'll probably want to pin nodejs and/or pnpm, as is convention in nixpkgs, i.e. nodejs_22 instead of nodejs, pnpm_9 instead of pnpm or something similar.

[techknowlogick]

@Naxdy 🙏💕 thank you so much!!