Fix stack deps

Author: angerman

test/callStackToNix/stack.yaml

@@ -37,7 +37,9 @@ packages:
 # Dependency packages to be pulled from upstream that are not in the resolver
 # using the same syntax as the packages field.
 # (e.g., acme-missiles-0.3)
-# extra-deps: []
+extra-deps:
+- process-1.6.5.0
+- transformers-0.5.6.2
 
 # Override default flag values for local packages and extra-deps
 # flags: {}