Question on the rule graph. I've made a plugin that can convert

.foo

files into

.bar

format. It does dependency inference and everything. Now I've written a second plugin that converts

.bar

files into

.baz

files. The

.foo

files are my primary sources. But when I try to HydrateSources with enable_codeen and the for_sources_type set to

.baz

, none of the rules are invoked, nor are the dependency inference functions. What is the secret to get it to chain the two rules together?

The Pants codegn logic appears to only look at direct conversions: https://github.com/pantsbuild/pants/blob/2fa5796d2437d825e20316ae827b3100eea51fcf/src/python/pants/engine/internals/graph.py#L1414

Hmm. Ok. That's going to be rather limiting.

Presumably. You could also invoke

generate_sources

or

hydrate_sources

with the

request

argument as your applicable subclass of

GenerateSourcesRequest

or

HydratesSourceesRequest

, respectively. Basically hard-code what a chaining impl might do.

ok, I'm trying this... From the first HydrateSources call, I ended up with a HydratedSources object with the

.bar

files in its snapshot. How do I convert that into a SourcesField to call HydrateSources the second time?