these 4 derivations will be built:
  /nix/store/66yxgiyldy9q2x6x58a64xwnqpw3h3yv-clan-cli-source.drv
  /nix/store/vqybn201l9f9m44wpvglgrixwc6969hf-clan-cli.drv
  /nix/store/wkhr5chk722f1k22jsy01h45s01k1ylj-closure-info.drv
  /nix/store/s2902sm9nglyvavzfvjfaq4rg71r136x-check-vars.drv
error: path '/nix/store/3z69m2c7xgwkn5c4ahbvijzpnl128pif-check-vars' is not valid
error: Cannot build '/nix/store/s2902sm9nglyvavzfvjfaq4rg71r136x-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/3z69m2c7xgwkn5c4ahbvijzpnl128pif-check-vars