{
  description = "cl-yag static site generator";
  inputs = {
    cl-nix-lite.url = "github:hraban/cl-nix-lite";
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = {
    self, nixpkgs, cl-nix-lite, flake-utils
  }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system}.extend cl-nix-lite.overlays.default;
      in 
      {
        packages = {
          ecl = with pkgs.lispPackagesLiteFor pkgs.ecl; lispDerivation {
            name = "thoughts";
            lispSystem = "thoughts";
            lispDependencies = [
              asdf
              arrow-macros
            ];
            src = pkgs.lib.cleanSource ./generator.lisp;
            meta = {
              license = pkgs.lib.licenses.agpl3Only;
            };

            buildInputs = [
              pkgs.ecl
              pkgs.git
              pkgs.gnumake
              pkgs.asdf
              pkgs.perl
              pkgs.multimarkdown
            ];

            phases = [ "unpackPhase" "installPhase" "cleanupPhase" ];

            unpackPhase = ''
              mkdir -p $TMPDIR
              cp ${./generator.lisp} $TMPDIR/generator.lisp
              mkdir -p $TMPDIR/data
              cp -r ${toString ./data}/* $TMPDIR/data/
              mkdir -p $TMPDIR/templates
              cp -r ${toString ./templates}/* $TMPDIR/templates/
              mkdir -p $TMPDIR/static
              cp -r ${toString ./static}/* $TMPDIR/static/
            '';

            installPhase = ''
              mkdir -p $out/html
              mkdir -p $out/gemini
              mkdir -p $TMPDIR/output/gemini/articles
              mkdir -p $TMPDIR/output/html
              mkdir -p $TMPDIR/temp/data
              cd $TMPDIR
              ecl --load $TMPDIR/generator.lisp
              cp -R $TMPDIR/static $out/html/
              cp -r $TMPDIR/output/html/* $out/html/
              cp -r $TMPDIR/output/gemini/* $out/gemini/
              cp -r $TMPDIR $out/tmpdir
            '';

            cleanupPhase = ''
              rm -rf $TMPDIR/temp
            '';
          };
        };

        devShell = pkgs.mkShell {
          buildInputs = [
            pkgs.ecl
            pkgs.git
            pkgs.gnumake
            pkgs.asdf
            pkgs.perl
            pkgs.multimarkdown
          ];
          shellHook = ''
            echo "Welcome to the development shell for cl-yag static site generator!"
            ecl --load generator.lisp
          '';
        };
      });
  }