these 2 derivations will be built:
  /nix/store/zixl1xhmdnrnidbpz33g1flg7ahjnzqz-extest-1.0.3-unstable-2026-05-25-vendor.drv
  /nix/store/vgh1x75qfqmhhys7l6drbb9z2jna845h-extest-1.0.3-unstable-2026-05-25.drv