these 2 derivations will be built:
  /nix/store/cpgap5srfdklkxszgj7v1isscy0x3n4n-workmux-0.1.248-vendor.drv
  /nix/store/dxvp7r43z1a1459xdkxvyqw5mym6k3dd-workmux-0.1.248.drv