nix-los/nixos/modules/development.nix

{ config, lib, pkgs, pkgs-unstable, ... }:

{
  options.custom.development = {
    enable = lib.mkEnableOption "Development tools";
    languages = lib.mkOption {
      type = lib.types.listOf lib.types.str;
      default = [ ];
      description = "Programming languages to install (rust, python, nodejs, go, etc)";
    };
  };

  config = let
    cfg = config.custom.development;

    languagePackages = {
      rust = with pkgs; [ rustup cargo-deny cargo-edit ];
      python = with pkgs; [ python3 python3Packages.pip python3Packages.virtualenv uv ];
      nodejs = with pkgs; [ nodejs pnpm ];
      go = with pkgs; [ go golangci-lint ];
      ruby = with pkgs; [ ruby bundler ];
    };

    selectedPackages =
      lib.concatMap (lang: languagePackages.${lang} or []) cfg.languages;

  in lib.mkIf cfg.enable {

    # Core development tools
    environment.systemPackages = with pkgs; [
      git
      git-lfs
      gnumake
      pkg-config
      gcc
      clang
      cmake
      ripgrep
      jq
    ] ++ selectedPackages;

    # Enable container support (optional)
    #virtualisation.docker.enable = true;
    #virtualisation.docker.enableOnBoot = false;
  };
}