these 2 derivations will be built:
  /nix/store/wzk2n5i73h2swfpcqk5ks8ajcy3ycvv7-closure-info.drv
  /nix/store/731h10g7fgz5qv7ykkqg2l4ic7dm75sc-check-vars.drv
this path will be fetched (0.0 KiB download, 3.9 MiB unpacked):
  /nix/store/i41xdll29rwmh6wif0r7vjcpidrymsjx-clan-cli
error: path '/nix/store/m22i3k5r35657qxgkz0i03gwasn2vcin-check-vars' is not valid
error: Cannot build '/nix/store/731h10g7fgz5qv7ykkqg2l4ic7dm75sc-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/m22i3k5r35657qxgkz0i03gwasn2vcin-check-vars