these 4 derivations will be built:
  /nix/store/0rhk6mzqb22vsrrch3js998bx5mazjv3-opencv-4.6.0.drv
  /nix/store/wyv1f57zr9w3iiqv8hsd6cg7zvskgfli-gst-plugins-bad-1.20.3.drv
  /nix/store/n078dxz6ckp8lyp3jj68x4596gmaswn1-webkitgtk-2.38.3+abi=4.0.drv
  /nix/store/01rm0fkcvp42dy2mz04cnyb69c3jvlzy-bespokesynth-1.1.0.drv