these 5 derivations will be built:
  /nix/store/7my81d0ivw8s99bjnqwhmbk9h99d0izq-closure-info.drv
  /nix/store/9xil15jzw1zhi8cm4yalfd3qxx9bxmjr-clan-runtime.drv
  /nix/store/bwclh7kgalk371mfxn0xngyvlrqb3w46-clan-cli-source.drv
  /nix/store/vdpv5xp0rr11b4giqnvyvfmmqnb7q1lv-clan-cli.drv
  /nix/store/msv6nd0jdbi12kbp7k8kc8jk93vv06j8-check-vars.drv
error: path '/nix/store/l8c0hfc0br905fmzlpy4pak8yx5qk084-check-vars' is not valid
error: Cannot build '/nix/store/msv6nd0jdbi12kbp7k8kc8jk93vv06j8-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/l8c0hfc0br905fmzlpy4pak8yx5qk084-check-vars