tijdelijk-te-laat/haskell/flake.nix

{
  description = "A basic Haskell flake";
  # To be used in conjunction with cabal2nix
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs { inherit system; };
        compiler = throw "add compiler version here";
      in
      {
        packages = {
          default = pkgs.haskell.packages.${compiler}.mkDerivation rec {
            pname = throw "insert haskell package name here\nderived from the .cabal file";
            version = "0.1.0.0";
            src = ./.;
            isLibrary = false;
            isExecutable = true;
            executableHaskellDepends = with pkgs.haskellPackages; [
              base
            ];
            license = pkgs.lib.licenses.agpl3Only;
            mainProgram = pname;
          };
        };

        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs.haskellPackages; [
            base
            cabal-install
            ghc
            haskell-language-server
            cabal2nix
          ];
        };

      }
    );
}