these 2 derivations will be built:
  /nix/store/hd6b279pfsm5vdk6df5pfymml92hcwnk-workmux-0.1.238-vendor.drv
  /nix/store/5q23p41ivad5d8vdjrl77w3f4q37na8l-workmux-0.1.238.drv