these 2 derivations will be built:
  /nix/store/py6j5a352ph3c7cpylw6pashf58naqd5-amp-linux-x64.drv
  /nix/store/9kgr4s7wjj32jgcsyg4s19i9x17ffahg-amp-0.0.1786233956-g40887a.drv