this derivation will be built:
  /nix/store/df96g9smf9qblxxv1ik52wlni7jak605-message-bridge-1.1.drv
this path will be fetched (0.0 KiB download, 21.9 MiB unpacked):
  /nix/store/9shgy80dpnrv6w46rvbh44p61gpjxa3h-source