these 2 derivations will be built:
  /nix/store/yll5xlrh6ampd6an0wzff087wrscfi1n-happy-coder-1.2.5.drv
  /nix/store/xn5fdgnhx78zf7gv9d4x71bky4cjaskz-check-happy-coder.drv
this path will be fetched (9.4 MiB download, 113.9 MiB unpacked):
  /nix/store/mi1ag8gy771q3kc3n72cd4xjfav7m0ir-difftastic-0.71.0