flake.nix

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        texlive = pkgs.texlive.combined.scheme-full;
        latexmkrc = ./.latexmkrc;

        build-pkg = (
          pkgs.writeShellScriptBin "build" ''
            ${texlive}/bin/latexmk -pdf -r ${latexmkrc} "$@"
          ''
        );
        # Ref: https://itsfoss.com/compress-pdf-linux/ , just small function for all the formats
        compress-pkg = (
          pkgs.writeShellScriptBin "compress" "${pkgs.ghostscript}/bin/gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=out/presentation.compressed.pdf out/presentation.pdf && echo 'Produced out/presentation.compressed.pdf'"
        );
        preview-pkg = (
          pkgs.writeShellScriptBin "preview" ''
            ${texlive}/bin/latexmk -pvc -pdf -r ${latexmkrc} "$@"
          ''
        );
        clean-pkg = (pkgs.writeShellScriptBin "clean" ''${texlive}/bin/latexmk -C "@"'');
      in
      {
        apps = rec {
          default = build;
          build = {
            type = "app";
            program = "${build-pkg}/bin/build";
          };
          # This can be used as follows: nix run .#preview -- {number}.tex
          preview = {
            type = "app";
            program = "${preview-pkg}/bin/preview";
          };
          compress = {
            type = "app";
            program = "${compress-pkg}/bin/compress";
          };
          clean = {
            type = "app";
            program = "${clean-pkg}/bin/clean";
          };
        };

        devShells.default = pkgs.mkShell {
          buildInputs = [
            texlive
            pkgs.duckdb
            pkgs.glow

            (pkgs.python3.withPackages (python-pkgs: [
              python-pkgs.virtualenv
              python-pkgs.jupyter
              python-pkgs.jupyterlab-widgets
              python-pkgs.plotly
              python-pkgs.ipywidgets
              python-pkgs.duckdb