these 5 derivations will be built:
  /nix/store/jp1gqh39l7v42cywnqx72n1nxsbxg7jz-clan-runtime.drv
  /nix/store/j36p7f44j9hx8a94zw68ndnxcrc9n5lg-clan-cli-source.drv
  /nix/store/9dks8063l7lrrmc6xvsac5qzaw13dy7m-clan-cli.drv
  /nix/store/lvddw4skqkn078j03kh89xgn2r9jds1y-closure-info.drv
  /nix/store/qn7rpa19m5w6awlv3rr4v9gn9gxwqbh8-check-vars.drv
error: path '/nix/store/x843ga2m5l604ksy4sgkhj3l0c0sd26m-check-vars' is not valid
error: Cannot build '/nix/store/qn7rpa19m5w6awlv3rr4v9gn9gxwqbh8-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/x843ga2m5l604ksy4sgkhj3l0c0sd26m-check-vars