expert/flake.nix at main · expert-lsp/expert · GitHub

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{
  description = "Reimagined language server for Elixir";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";

    beam-flakes.url = "github:elixir-tools/nix-beam-flakes";
    beam-flakes.inputs.flake-parts.follows = "flake-parts";
    beam-flakes.inputs.nixpkgs.follows = "nixpkgs";

    flake-parts.url = "github:hercules-ci/flake-parts";
  };

  outputs = inputs:
    inputs.flake-parts.lib.mkFlake {inherit inputs;} {
      imports = [inputs.beam-flakes.flakeModule];

      systems = [
        "x86_64-darwin"
        "aarch64-darwin"
        "x86_64-linux"
        "aarch64-linux"
      ];

      perSystem = {
        lib,
        pkgs,
        ...
      }: let
        beamPackages = pkgs.beamMinimal27Packages.extend (
          _: prev: {
            elixir = prev.elixir_1_17;
          }
        );
      in {
        formatter = pkgs.nixfmt;

        apps.update-deps = let
          script = pkgs.writeShellApplication {
            name = "update-deps";

            runtimeInputs = [
              beamPackages.elixir
              pkgs.just
            ];

            text = ''
              just mix all deps.get
              just mix all deps.nix
            '';
          };
        in {
          type = "app";
          program = lib.getExe script;
        };

        packages = rec {
          default = expert;

          expert = pkgs.callPackage ./nix/expert.nix {inherit beamPackages;};
        };

        beamWorkspace = {
          enable = true;
          devShell.languageServers.elixir = false;
          devShell.languageServers.erlang = false;
          versions = {
            elixir = "1.17.3";
            erlang = "27.3.4.1";
          };
          devShell.extraPackages = with pkgs; [
            alejandra
            zig_0_15
            xz
            just
            _7zz
            git
            zizmor
          ];
        };
      };
    };
}