these 2 derivations will be built:
  /nix/store/frcsdf1yl25bm07h1qdanjip78hsf349-amp-0.0.1794542441-g4e0611.drv
  /nix/store/nck51l8f9wgqvl8fmfyb5gf7dj4vh982-check-amp.drv