How to upload build dependencies too?

I have a package A which has other packages (e.g. B) as build dependencies. Package B is not available as a binary package. When I build A with build_policy set to missing package B is build from source as well.

At the end the new package for A is uploaded to my repo. Is it possible to automatically upload the new package for B as well?

[solvingj]

Hah, while my first instinct is that it’s better to have a dedicated job to build B separately, while thinking about it, I definitely noticed the temptation. As bincrafters, we could define one job “boost_all” with build missing, and let the whole boost tree be built (and now uploaded) recursively. I still don’t think it’s a good idea in our case, has lots of impracticalities at scale, but now I can see it being worthwhile in some cases. For example, if you are setting up CPT for a small new project, and building a few unique combination of settings/options for which there are no binaries in conan center, and use an OSS package which has 10 dependencies. It would be tedious to have to setup a CI job to build each separately.

[wittmeie]

We also need this feature. I might be able to contribute it but need some advice on how to implement it. Would you envision this as an option of the conan upload command? If so, wouldn’t we need two options: (1) upload transitive runtime dependencies and (2) upload transitive build dependencies?