{ pkgs, self }:
let
  revision = "${self.lastModifiedDate}-${self.shortRev or self.dirtyShortRev or "dirty"}";
  version = self.shortRev or self.dirtyShortRev or "unstable-${self.lastModified}";
  mkDocker = server:
    let
      PORT = 3000;
    in
    pkgs.dockerTools.streamLayeredImage {
      name = "registry.fly.io/alanpearce-eu";
      tag = revision;
      contents = [ server ];
      config = {
        Cmd = [ "website" ];
        Env = [
          "PRODUCTION=true"
          "PORT=${builtins.toString PORT}"
          "ROOT=public"
        ];
        ExposedPorts = {
          "${builtins.toString PORT}/tcp" = { };
        };
      };
    };
in
rec {
  default = server;
  builder = pkgs.buildGoApplication {
    pname = "website-builder";
    inherit version;
    CGO_ENABLED = 0;
    src = with pkgs.lib.fileset; toSource {
      root = ./..;
      fileset = unions [
        ./../go.mod
        ./../go.sum
        ./../cmd
        ./../internal
      ];
    };
    modules = ./gomod2nix.toml;
    subPackages = [ "cmd/build" ];
  };
  server = pkgs.buildGoApplication {
    pname = "website";
    inherit version;
    CGO_ENABLED = 0;
    src = with pkgs.lib.fileset; toSource {
      root = ./..;
      fileset = unions [
        ./../go.mod
        ./../go.sum
        ./../server.go
        ./../internal
        ./../config.toml
        ./../content
        ./../static
        ./../templates
      ];
    };
    nativeBuildInputs = [ builder ];
    prePatch = ''
      ${builder}/bin/build
    '';
    modules = ./gomod2nix.toml;
    ldflags = [ "-s" "-w" "-X" "main.Commit=${version}" ];
  };
  docker = mkDocker server;
  docker-aarch64-linux = mkDocker (self.packages.aarch64-linux.server);
  docker-x86_64-linux = mkDocker (self.packages.x86_64-linux.server);
  fly = docker-x86_64-linux;
}