default.nix

{ nixpkgs ? import <nixpkgs> {}
}:

let
  inherit (nixpkgs) pkgs;
  activate = pkgs.writeScriptBin "activate" ''
    #!${pkgs.bash}/bin/bash -e
  '';

  frontend = import ./frontend {};
  backend = import ./backend {};

in
  pkgs.stdenv.mkDerivation rec {
    name = "qoeifs-app";
    src = ./.;
    env = pkgs.buildEnv { name = name; paths = buildInputs; };

    installPhase = ''
      mkdir -p $out/prod/static
      cp -rf ${frontend}/ghcjs/frontend/bin/frontend-exe.jsexe/* $out/prod/static/
      cp -r ./static/test.css $out/prod/static
      cp -rf ${backend.package}/lib/node_modules/backend/result/lib/node_modules/backend/* $out/prod/

      mkdir -p $out/bin
      ln -sv ${activate}/bin/activate $out/bin/
    '';

    phases = ["unpackPhase" "installPhase"];
    buildInputs = [ frontend backend pkgs.nodePackages.nodemon];
      
  }

shell.nix

{ nixpkgs ? import <nixpkgs> {}}:
let
  inherit (nixpkgs) pkgs;
  app = import ./default.nix {};
in
  app.env