(In response to issue at https://issues.guix.info/issue/42155):
I want to be able to specify dependency sources, so I am working on this issue. It's complicated because --with-source= can take a simple source (implying the package being built should be built from SOURCE) or package=source (AIUI implying PACKAGE in the specified list of packages should be built from SOURCE). Should we deprecate the current interpretation of "--with-source=package=source"? Or would it be better to preserve these options and make a new recursive '--with-dependency-source=package=source' option?
I'm leaning towards making the option "--with-dependency-source=package=source" because I think that will be easier to accomplish and maintain. But if anyone has a compelling reason to deprecate the old usage, I am willing to listen.
