this derivation will be built:
  /nix/store/bjv9ylpkhf232y0gqaywr6rdc34gnxnh-spec-jsonfmt.drv
this path will be fetched (0.4 KiB download, 0.7 KiB unpacked):
  /nix/store/l37sl734xirz1bln9wmx9g13jslkambw-writable-tmpdir-as-home-hook
warning: bjv9ylpkhf232y0gqaywr6rdc34gnxnh-spec-jsonfmt.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}, waiting up to 120s for a worker