these 2 derivations will be built:
  /nix/store/47fa53hxry0js0kpk3rm6a86mn3ckqz1-jscpd-5.4.3.drv
  /nix/store/j38f11c84xvjj3p5wbbdx82pj3xg3bd7-check-jscpd.drv