these 2 derivations will be built:
  /nix/store/5ym3jai1h4rs1dy3slhln5gvrgdcsmzr-closure-info.drv
  /nix/store/xzjygz40rbq39b2m0v3gxdx09dc1w53n-check-vars.drv
error: path '/nix/store/q0ilsc4ym2dn3l5zy5dzs656g9lk8i1i-check-vars' is not valid
error: Cannot build '/nix/store/xzjygz40rbq39b2m0v3gxdx09dc1w53n-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/q0ilsc4ym2dn3l5zy5dzs656g9lk8i1i-check-vars