naiserator/flake.nix at master · nais/naiserator · GitHub

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{
  description = "naiserator";

  inputs.nixpkgs.url = "nixpkgs/nixos-unstable";
  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs =
    inputs:
    inputs.flake-utils.lib.eachSystem
      [
        "x86_64-linux"
        "x86_64-darwin"
        "aarch64-linux"
        "aarch64-darwin"
      ]
      (
        system:
        let
          pkgs = import inputs.nixpkgs {
            localSystem = {
              inherit system;
            };
            overlays = [
              (
                final: prev:
                let
                  version = "1.23.0";
                  newerGoVersion = prev.go.overrideAttrs (old: {
                    inherit version;
                    src = prev.fetchurl {
                      url = "https://go.dev/dl/go${version}.src.tar.gz";
                      hash = "sha256-Qreo6A2AXaoDAi7T/eQyHUw78smQoUQWXQHu7Nb2mcY=";
                    };
                  });
                  nixpkgsVersion = prev.go.version;
                  newVersionNotInNixpkgs = -1 == builtins.compareVersions nixpkgsVersion version;
                in
                {
                  go = if newVersionNotInNixpkgs then newerGoVersion else prev.go;
                  buildGoModule = prev.buildGoModule.override { go = final.go; };
                }
              )
            ];
          };
          envtest-bins = pkgs.symlinkJoin {
            name = "envtest-bins";
            paths = [
              pkgs.etcd
              pkgs.kubernetes
            ];
          };
        in
        {
          devShells.default = pkgs.mkShell {
            inputsFrom = [envtest-bins];
            packages = with pkgs; [
              go
              gopls
              gotools
              go-tools
              gofumpt
              (python3.withPackages(pkgs: [pkgs.pyyaml pkgs.ipython]))
            ];
            shellHook = ''
              export KUBEBUILDER_ASSETS="${envtest-bins}/bin"
            '';
          };

          formatter = pkgs.nixfmt-rfc-style;
        }
      );
}