{
  description = "Pandoc build system for maths web";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    flake-parts.url = "github:hercules-ci/flake-parts";
    haskell-flake.url = "github:srid/haskell-flake";
    pandoc-linear-table.url = "/home/amy/github/pandoc-linear-table";
    pandoc-logic-proof.url = "/home/amy/github/pandoc-logic-proof";
    pandoc-columns.url = "/home/amy/github/pandoc-columns";
    pandoc-query.url = "/home/amy/codeberg/pandoc-query";
  };
  outputs = inputs@{ self, nixpkgs, flake-parts, pandoc-linear-table, pandoc-logic-proof, pandoc-columns, pandoc-query, ... }:
    flake-parts.lib.mkFlake { inherit inputs; } {
      systems = nixpkgs.lib.systems.flakeExposed;
      imports = [ inputs.haskell-flake.flakeModule ];

      perSystem = { self', pkgs, ... }: {
        haskellProjects.default = {
	  # use my versions of some Haskell pagkages instead of the nixpkgs versions
	  packages = {
	    pandoc-linear-table.source = inputs.pandoc-linear-table;
	    pandoc-logic-proof.source = inputs.pandoc-logic-proof;
	    pandoc-columns.source = inputs.pandoc-columns;
	    pandoc-query.source = inputs.pandoc-query;
	  };
	};

        # haskell-flake doesn't set the default package, but you can do it here.
        packages.default = self'.packages.pandoc-maths-web;
      };
    };
}