[question] Header only package - cannot access headers about conan HOT 3 CLOSED

Hi @mzbro

Thanks for your question.

Headers are not transitive by default, the expectation is that dependencies are implementation details. There are 2 possibilities:

• If the consumer, in this case, the test_package has a direct #include to one header of the transitive package, then the consumer should declare a direct requires to the package, as it depends directly on it.
• If the package does #include in its public headers other headers from the dependency, then it is propagating the include requirements, and as it is not the default visibility, it should be declared in the requires with self.requires("pkg/version", transitive_headers=True)

Please let us know if that helps.

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Happy to help.

The truth is that the basic tutorial doesn't cover this transitivity, it is a bit more advanced case, we might try to add some hints or links there.

Thanks for the feedback!

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Adding transitive_headers=True to my example project solved this issue. Thank you very much! I must have missed that in the tutorial.

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