Avoid rebuilding local dependency if it has already been built on its own

I have a local dependency in my stack.yaml:

extra-deps:      - foo/bar      - foo/quux  

I also have a stack.yaml in foo:

packages:      - bar      - quux  

Now let's suppose I do the following sequence of actions:

1. Change something in foo/bar or foo/quux
2. Do a stack build in foo
3. Do a stack build in the root directory

If #2 succeeds, I would expect #3 to not rebuild foo/bar or foo/quux, since step #2 already did that. However, it seems the build under foo is not reused for the build in / by default. Is there a way to do that?

https://stackoverflow.com/questions/66084171/avoid-rebuilding-local-dependency-if-it-has-already-been-built-on-its-own February 07, 2021 at 11:04AM