templates/jupyter/flake.nix

{
  description = "A jupyter flake, with a custom haskell kernel and proper pdflatex LaTeX export supoprt";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (sys:
      let pkgs = import nixpkgs { system = sys; };
          python = pkgs.python310;

          latex = pkgs.texlive.combine {
            inherit (pkgs.texlive)
              scheme-basic # Base
              tcolorbox pgf environ etoolbox pdfcol parskip caption float upquote eurosym ucs fancyvrb grffile adjustbox hyperref titling booktabs enumitem ulem soul rsfs jknapltx cm-super # Other packages needed by jupyter.
              tikz-among-us; # extra packages
          };

          jupyter-config = python.pkgs.buildPythonPackage rec {
            name = "jupyter-config";
            format = "other";
            src = ./jupyter-config ;
            installPhase = ''
              find . -type f -exec sed -i 's|<pdflatex>|${latex}/bin/pdflatex|g' {} +
              mkdir -p $out/etc/jupyter/
              cp -r . $out/etc/jupyter/
            '';
          };

          jupyter-ihaskell = python.pkgs.buildPythonPackage rec {
            name = "jupyter-ihaskell";
            format = "other";

            unpackPhase = ": 3"; # we don't have any sources

            nativeBuildInputs = [ (python.withPackages (ps: with ps; [ jupyter jupyter-core ])) ];

            # for some reason, ihaskell wants to create $HOME/.ihaskell
            # we set $HOME to $out, and then remove the .ihaskell file
            installPhase = ''
              mkdir -p $out
              HOME=$out ${pkgs.ihaskell}/bin/ihaskell install --prefix=$out
              rm -rf $out/.ihaskell
            '';
          };

          python-environment = (python.withPackages (ps: with ps; [
            ipympl numpy matplotlib scipy

            jupyter-core jupyter
            jupyter-config jupyter-ihaskell
          ]));
      in rec {
        packages.latex = latex;
        packages.python-environment = python-environment;

        packages.default = pkgs.writeScriptBin "start-notebook" ''
          env PATH=$PATH:${latex}/bin:${pkgs.pandoc}/bin ${python-environment}/bin/jupyter-notebook
        '';

        devShells.default = pkgs.mkShell {
          packages = [ python-environment latex ];
        };
      }
    );
}