flake.nix

{
  description = "A very basic flake";

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

    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };

    naersk = {
      url = "github:nix-community/naersk";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    deno2nix = {
      url = "github:Xe/deno2nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "flake-utils";
    };

    # Explicitly pulling from that version of nixpkgs to avoid font duplication.
    iosevka.url = "github:Xe/iosevka";

    typst.url = "github:typst/typst";
    typst.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs =
    { self, nixpkgs, flake-utils, naersk, deno2nix, iosevka, typst, ... }:
    flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ deno2nix.overlays.default typst.overlays.default ];
        };
        naersk-lib = naersk.lib."${system}";
        src = ./.;
        lib = pkgs.lib;

        tex = with pkgs;
          texlive.combine { inherit (texlive) scheme-medium bitter titlesec; };

        fontsConf = pkgs.symlinkJoin {
            name = "typst-fonts";
            paths = [ "${self.packages.${system}.iosevka}/static/css/iosevka" ];
          };

        typstWithIosevka = pkgs.writeShellApplication {
          name = "typst";
          text = ''
            ${pkgs.typst-dev}/bin/typst \
            --font-path ${fontsConf} \
            "$@"
          '';
          runtimeInputs = [ ];
        };
      in rec {
        packages = rec {
          bin = naersk-lib.buildPackage {
            pname = "xesite-bin";
            root = src;
            buildInputs = with pkgs; [
              pkg-config
              openssl
              git
              deno
              nodePackages.uglify-js
            ];
          };

          config = pkgs.stdenv.mkDerivation {
            pname = "xesite-config";
            inherit (bin) version;
            inherit src;
            buildInputs = with pkgs; [ dhall dhallPackages.Prelude ];

            phases = "installPhase";

            installPhase = ''
              mkdir -p $out
              cp -rf ${pkgs.dhallPackages.Prelude}/.cache .cache
              chmod -R u+w .cache
              export XDG_CACHE_HOME=.cache
              export DHALL_PRELUDE=${pkgs.dhallPackages.Prelude}/binary.dhall;
              dhall resolve --file $src/config.dhall >> $out/config.dhall
            '';
          };

          resumePDF = pkgs.stdenv.mkDerivation {
            pname = "xesite-resume-pdf";
            inherit (bin) version;
            inherit src;
            buildInputs = with pkgs; [
              dhall-json
              dhallPackages.Prelude
              tex
              pandoc
              typst-dev
            ];

            phases = "installPhase";

            installPhase = ''
              mkdir -p $out/static/resume

              cp -rf ${pkgs.dhallPackages.Prelude}/.cache .cache
              chmod -R u+w .cache
              export XDG_CACHE_HOME=.cache
              export DHALL_PRELUDE=${pkgs.dhallPackages.Prelude}/binary.dhall;

              mkdir -p icons
              cp -vrf $src/dhall/resume/* .
              dhall-to-json --file $src/dhall/resume.dhall --output resume.json

              typst compile --font-path ${fontsConf} resume.typ $out/static/resume/resume.pdf
            '';
          };

          frontend = pkgs.stdenv.mkDerivation rec {
            pname = "xesite-frontend";
            inherit (bin) version;
            dontUnpack = true;
            src = ./src/frontend;
            buildInputs = with pkgs; [ deno jq nodePackages.uglify-js ];
            ESBUILD_BINARY_PATH = "${pkgs.esbuild}/bin/esbuild";

            buildPhase = ''
              export DENO_DIR="$(pwd)/.deno2nix"
              mkdir -p $DENO_DIR
              ln -s "${
                pkgs.deno2nix.internal.mkDepsLink ./src/frontend/deno.lock
              }" $(deno info --json | jq -r .modulesCache)
              export MINIFY=yes

              mkdir -p dist
              export WRITE_TO=$(pwd)/dist

              pushd $(pwd)
              cd $src
              deno run -A ./build.ts **/*.tsx
              popd
            '';

            installPhase = ''
              mkdir -p $out/static/xeact
              cp -vrf dist/* $out/static/xeact
            '';
          };

          iosevka = pkgs.stdenvNoCC.mkDerivation {
            name = "xesite-iosevka";
            buildInputs = with pkgs; [
              python311Packages.brotli
              python311Packages.fonttools
            ];
            dontUnpack = true;
            buildPhase = ''
              mkdir -p out
              ${pkgs.unzip}/bin/unzip ${
                self.inputs.iosevka.packages.${system}.default
              }/ttf.zip
              for ttf in ttf/*.ttf; do
                cp $ttf out
                name=`basename -s .ttf $ttf`
                pyftsubset \
                    $ttf \
                    --output-file=out/"$name".woff2 \
                    --flavor=woff2 \
                    --layout-features=* \
                    --no-hinting \
                    --desubroutinize \
                    --unicodes="U+0000-0170,U+00D7,U+00F7,U+2000-206F,U+2074,U+20AC,U+2122,U+2190-21BB,U+2212,U+2215,U+F8FF,U+FEFF,U+FFFD,U+00E8"
              done

            '';
            installPhase = ''
              mkdir -p $out/static/css/iosevka
              cp out/* $out/static/css/iosevka
            '';
          };

          static = pkgs.stdenv.mkDerivation {
            pname = "xesite-static";
            inherit (bin) version;
            inherit src;

            phases = "installPhase";

            installPhase = ''
              mkdir -p $out
              cp -vrf $src/data $out
              cp -vrf $src/static $out
            '';
          };

          posts = pkgs.stdenv.mkDerivation {
            pname = "xesite-posts";
            inherit (bin) version;
            inherit src;

            phases = "installPhase";

            installPhase = ''
              mkdir -p $out
              cp -vrf $src/blog $out
              cp -vrf $src/gallery $out
              cp -vrf $src/talks $out
            '';
          };

          default = pkgs.symlinkJoin {
            name = "xesite-${bin.version}";
            paths = [ config posts static bin frontend resumePDF iosevka ];
          };

          docker = pkgs.dockerTools.buildLayeredImage {
            name = "xena/xesite";
            tag = bin.version;
            contents = [ default ];
            config = {
              Cmd = [ "${bin}/bin/xesite" ];
              WorkdingDir = "${default}";
            };
          };
        };

        devShell = pkgs.mkShell {
          buildInputs = with pkgs; [
            # Rust
            rustc
            cargo
            clippy
            rust-analyzer
            cargo-watch
            cargo-license
            rustfmt
            hyperfine

            # system dependencies
            openssl
            pkg-config

            # dhall
            dhall
            dhall-json
            dhall-lsp-server
            tex
            pandoc
            typstWithIosevka

            # frontend
            deno
            nodePackages.uglify-js
            esbuild
            zig

            # tools
            ispell
            pandoc
            python311Packages.fonttools
          ];

          SITE_PREFIX = "devel.";
          CLACK_SET = "Ashlynn,Terry Davis,Dennis Ritchie";
          ESBUILD_BINARY_PATH = "${pkgs.esbuild}/bin/esbuild";
          RUST_LOG = "debug";
          RUST_BACKTRACE = "1";
          GITHUB_SHA = "devel";
          DHALL_PRELUDE = "${pkgs.dhallPackages.Prelude}";
        };
      }) // {
        nixosModules.default = import ./nix/xesite.nix self;
      };
}