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default.nix (view raw)

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let
  sources = import ./npins;

  pkgs = import sources.nixpkgs {
    overlays = [
      (import "${sources.gomod2nix}/overlay.nix")
    ];
  };
  pre-commit-hooks = import sources.pre-commit-hooks;

  inherit (pkgs)
    buildGoApplication
    lib
    runCommandLocal;

  version = "unstable";
  mkDocker = type: { server, architecture ? pkgs.go.GOARCH }:
    pkgs.dockerTools.${type} {
      name = "registry.fly.io/alanpearce-eu";
      contents = with pkgs; [
        cacert
      ];
      inherit architecture;
      config = {
        Cmd = [ "${server}/bin/server" ];
        Env = [
          "PRODUCTION=true"
          "LISTEN_ADDRESS=::"
          "ROOT=/data"
          "PORT=80"
        ];
        WorkingDir = "/data";
        ExposedPorts = {
          "80/tcp" = { };
          "443/tcp" = { };
        };
      };
    };
  mkDockerStream = mkDocker "streamLayeredImage";
  mkDockerImage = mkDocker "buildLayeredImage";
in
rec {
  pre-commit-check = pre-commit-hooks.run {
    src = ./.;
    hooks = {
      go-mod-tidy = {
        enable = true;
        name = "go-mod-tidy";
        description = "Run `go mod tidy`";
        types_or = [ "go" "go-mod" ];
        entry = "${pkgs.go}/bin/go mod tidy";
        pass_filenames = false;
      };
      gomod2nix = {
        enable = true;
        name = "gomod2nix";
        description = "Import go.mod updates to nix";
        types_or = [ "go-sum" ];
        entry = "${pkgs.gomod2nix}/bin/gomod2nix --outdir nix";
        pass_filenames = false;
      };
    };
  };
  server = buildGoApplication {
    pname = "server";
    inherit version;
    CGO_ENABLED = 0;
    src = with lib.fileset; toSource {
      root = ./.;
      fileset = unions [
        ./go.mod
        ./go.sum
        ./cmd/server
        ./internal
        ./templates
      ];
    };
    modules = ./nix/gomod2nix.toml;
    patchPhase = ''
      ${pkgs.templ}/bin/templ generate
    '';
    subPackages = [ "cmd/server" ];
    tags = [ "embed" ];
    ldflags = [
      "-s"
      "-w"
    ];
  };
  docker-stream = mkDockerStream { inherit server; };
  docker-image = mkDockerImage { inherit server; };

  server-amd64-linux = server.overrideAttrs (old: old // {
    GOOS = "linux";
    GOARCH = "amd64";
    fixupPhase = ''
      if [[ -d $out/bin/linux_amd64 ]]
      then
        mv $out/bin/linux_amd64/server $out/bin/server
        rmdir $out/bin/linux_amd64
      fi
    '';
  });
  docker-image-amd64-linux = mkDockerImage {
    server = server-amd64-linux;
    architecture = "amd64";
  };
  docker-stream-amd64-linux = mkDockerStream {
    server = server-amd64-linux;
    architecture = "amd64";
  };
}