this derivation will be built:
  /nix/store/lf7b60i4yfrn7z928cd9fh3f5f4lhkji-mkEffect-root.drv
building '/nix/store/1zk4x3f6x2aiynvc9hslhcqmcmf51k8c-nixbot-docs.drv'...
building '/nix/store/dwh9lchxaw4zzvaqlqvnb67dzrp8mxrm-gh-pages-env.drv'...
To https://github.com/Mic92/nixbot.git
 + 21d85c6...b9b4c4b gh-pages -> gh-pages (forced update)