these 2 derivations will be built:
  /nix/store/a20bahc7vclp8mqqm2nnz817hfkfr2g6-ctx-0.25.0-vendor.drv
  /nix/store/z5g3gqpslvh5ijfya2z87f7qqnvlc006-ctx-0.25.0.drv