this derivation will be built:
  /nix/store/6kyfs5asjfkmqs3j39jxb8i74xyzh9ys-treefmt-check.drv
building '/nix/store/6kyfs5asjfkmqs3j39jxb8i74xyzh9ys-treefmt-check.drv'
treefmt-check> tribuchet: building on eliza