{
  description = "%INIT_DESCRIPTION";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

    treefmt-nix = {
      url = "github:numtide/treefmt-nix";
      inputs = {
        nixpkgs.follows = "nixpkgs";
      };
    };

    flake_version_update = {
      url = "git+https://codeberg.org/soispha/flake_version_update.git";
      inputs = {
        systems.follows = "systems";
        nixpkgs.follows = "nixpkgs";
        flake-utils.follows = "flake-utils";
      };
    };

    # inputs for following
    systems = {
      url = "github:nix-systems/x86_64-linux"; # only evaluate for this system
    };
    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };
    flake-utils = {
      url = "github:numtide/flake-utils";
      inputs = {
        systems.follows = "systems";
      };
    };
  };

  outputs = {
    self,
    nixpkgs,
    flake-utils,
    treefmt-nix,
    flake_version_update,
    ...
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = nixpkgs.legacyPackages.${system};
      treefmtEval = import ./treefmt.nix {inherit treefmt-nix pkgs;};

      # This version is set automatically on `cog bump --auto`;
      version = "v1.0.0"; # GUIDING VERSION STRING

      man_number = "1"; # TODO change if necessary
      pname = "TODO";

      build = pkgs.stdenv.mkDerivation {
        inherit version pname;
        src = ./.;

        nativeBuildInputs = with pkgs; [pandoc fd];

        dependencies = with pkgs; [gawk];

        buildPhase = ''
          mkdir --parents $out/docs;
          pandoc ./docs/${pname}.${man_number}.md -s -t man  > $out/docs/${pname}.${man_number}
        '';

        installPhase = ''
          install -D $out/docs/${pname}.${man_number}  $out/share/man/man${man_number}/${pname};

          install -D ./src/${pname}.awk $out/bin/${pname}.awk;

          # Generate a wrapper script.
          cat << EOF > $out/bin/${pname}
          #! /usr/bin/env sh
          $out/bin/${pname}.awk -- "\$@"
          EOF

          # Set correct permissions
          chmod +x $out/bin/${pname}
        '';
      };
    in {
      packages.default = build;
      checks = {
        inherit build;
        formatting = treefmtEval.config.build.check self;
      };
      formatter = treefmtEval.config.build.wrapper;

      devShells.default = pkgs.mkShell {
        packages = with pkgs; [
          cocogitto
          flake_version_update.packages."${system}".default

          gawk
          licensure
        ];
      };
    });
}
# vim: ts=2