these 2 derivations will be built:
  /nix/store/jca4qz1ycvyr52yzvk0lwpwx0hnbk7cs-mercat-0.3.8.drv
  /nix/store/a2hjvshxgkf1dijpaph7l5zhz6s976yl-check-mercat.drv
this path will be fetched (86.8 MiB download, 398.0 MiB unpacked):
  /nix/store/mrjlaq4kxr7h00kiqahk17wh43d3s95r-zig-0.17.1