hakyll-skeleton/outputs.nix

{
  self,
  nixpkgs,
  utils,
  haskellNix,
} @ inputs:
utils.lib.eachDefaultSystem (
  system: let
    overlays = [
      haskellNix.overlay
      (final: prev: {
        hakyllProject = final.haskell-nix.project' {
          src = ./.;
          compiler-nix-name = "ghc910";
          shell.buildInputs = [
            skeleton-web
          ];
          shell.tools = {
            cabal = "latest";
            hlint = "latest";
            haskell-language-server = "latest";
          };
        };
      })
    ];
    pkgs = import nixpkgs {
      inherit overlays system;
      inherit (haskellNix) config;
    };
    flake = pkgs.hakyllProject.flake {};
    skeleton-web = flake.packages."skeleton-web:exe:site";
    hakyll-skeleton = pkgs.stdenv.mkDerivation {
      name = "hakyll-skeleton";
      buildInputs = [];
      src =
        pkgs.nix-gitignore.gitignoreSourcePure [
          ./.gitignore
          ".git"
          ".github"
        ]
        ./.;

      # LANG and LOCALE_ARCHIVE are fixes pulled from the community:
      LANG = "en_AU.UTF-8";
      LOCALE_ARCHIVE =
        pkgs.lib.optionalString
        (pkgs.buildPlatform.libc == "glibc")
        "${pkgs.glibcLocales}/lib/locale/locale-archive";

      buildPhase = ''
        ${skeleton-web}/bin/site build --verbose
      '';

      installPhase = ''
        cp -a _site/. "$out/"
      '';
    };
  in {
    packages = {
      inherit skeleton-web hakyll-skeleton;
      default = hakyll-skeleton;
    };
    apps = {
      default = utils.lib.mkApp {
        drv = skeleton-web;
        exePath = "/bin/skeleton-web";
      };
    };
    # Overwrite devShells being inported from haskell-nix
    devShells.default = pkgs.callPackage ./shell.nix {
      inherit (haskellNix.legacyPackages."${pkgs.system}") stylish-haskell;
    };
  }
)