these 3 derivations will be built:
  /nix/store/3nabg032i9lwgv1i468hjgyg2gq4fwq4-aven-0.1.27-vendor-staging.drv
  /nix/store/0vhvrfx0fj9s337gl8i2zdxy1srciv06-aven-0.1.27-vendor.drv
  /nix/store/a8agqg3p2rxjpfhj1ms5f5y6ra0jp17z-aven-0.1.27.drv