this derivation will be built:
  /nix/store/aq9n0ypaqsl2h1yajbj89jvjwli6cq1s-treefmt-check.drv
building '/nix/store/aq9n0ypaqsl2h1yajbj89jvjwli6cq1s-treefmt-check.drv'
treefmt-check> tribuchet: building on jamie