these 5 derivations will be built:
  /nix/store/hysz3xbwclxsvknnwxa818g099nff51n-closure-info.drv
  /nix/store/r3pz1niyj46dfp1xxbcq7j0j66272jnb-clan-runtime.drv
  /nix/store/iwr10gs5ikklgj7c70h3bmvw3dy4dp9a-clan-cli-source.drv
  /nix/store/vq54pgm5g8k34qilpwdp7fnch2zgx2lc-clan-cli.drv
  /nix/store/r0wmqfmp2iqsmz4ghc58422i7bl8s2gd-check-vars.drv
error: path '/nix/store/8vwmhh6ma2id3dpijqpvxaxp0q1iqd3p-check-vars' is not valid
error: Cannot build '/nix/store/r0wmqfmp2iqsmz4ghc58422i7bl8s2gd-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/8vwmhh6ma2id3dpijqpvxaxp0q1iqd3p-check-vars