isle/nix/pkgs.nix

rec {

  overlays = [

    # Make buildGoModules use static compilation by default, and use go 1.18
    # everywhere.
    (final: prev:

      let

        buildArgs = {
          doCheck = false;
          CGO_ENABLED=0;
          tags = [ "netgo" "timetzdata" ];
          ldflags = [ "-w" "-extldflags=-static" ];
        };

      in {

        go = prev.go_1_18;
        buildGoModule = args: prev.buildGo118Module (buildArgs // args);
        buildGo118Module = args: prev.buildGo118Module (buildArgs // args);

      }
    )
  ];

  version = "22-05";
  rev = "2aec372cdcd4d73b94863611fea70e0884270fdc";

  src = fetchTarball {
    name = "nixpkgs-${version}";
    url = "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz";
    sha256 = "1pbfhlh4v8l70p44gspsci3i6w0wk70vaisiawg3jhka2nxb8367";
  };

  pkgs = import src { inherit overlays; };
}