these 2 derivations will be built:
  /nix/store/zrr8zrbmpb35xdpzzs89s2rmwpcbcghy-aven-0.1.35-vendor.drv
  /nix/store/fvz3gl99pqwd695jii2wqp7gfwa35jjv-aven-0.1.35.drv