these 2 derivations will be built:
  /nix/store/m7m8a62nvxwymjfpd4pp8v5ps8sc6wkl-freebuff-linux-x64.tar.gz.drv
  /nix/store/a1dxskr33pdsgmkggbxp760dhbgi7p0i-freebuff-0.0.180.drv