these 2 derivations will be built:
  /nix/store/z2kilw5jvfdn4bw7pvbvql7r8x1cv7y9-amp-linux-x64.drv
  /nix/store/7g6l66rbmbjb4cnbr8vgysb849xf2774-amp-0.0.1786579933-ga2774d.drv