{
  flake.modules.homeManager.base =
    { pkgs, ... }:
    {
      home.packages = [
        (pkgs.writeShellApplication {
          name = "build-adoc";

          runtimeInputs = with pkgs; [
            asciidoctor-with-extensions
          ];

          excludeShellChecks = [ "SC2034" ];

          text = ''
            ls book

            echo ""

            date=$(date '+%Y-%m-%d %H:%M:%S')

            echo "The current date is $date."

            pwd=$(pwd)
            parent=$(basename "$(dirname "$pwd")")
            name=$(basename "$pwd")

            echo "The parent directory is $parent."
            echo "The current directory is $name."

            echo ""
            echo "Generating the HTML..."
            asciidoctor \
              -D book \
              -a "date=$date" \
              -o index.html \
              ./book/index.adoc

            echo ""
            echo "Generating the EPUB..."
            asciidoctor-epub3 \
              -D book \
              -a "date=$date" \
              -o "$parent-$name.epub" \
              ./book/index.adoc

            echo ""
            echo "Generating the PDF..."
            asciidoctor-pdf \
              -D book \
              -a "date=$date" \
              -o "$parent-$name.pdf" \
              ./book/index.adoc

            echo ""

            ls book
          '';
        })
      ];
    };
}