these 2 derivations will be built:
  /nix/store/3wbllxv793fjv9zdlaj6rzgd6rq6czg0-mnemopi-memory-validate.drv
  /nix/store/w815k4rp9iy3wj9kbw1lzy93frvwck9x-apps-build.drv
this path will be fetched (0.0 KiB download, 255.0 MiB unpacked):
  /nix/store/aqz23w9hdfi5bn67722lg8f6ph4iqhl2-omp-18.12.5