[bug] layout() method does not propagate includedirs to clients

Environment Details (include every applicable attribute)

• Operating System+version: Windows 10
• Compiler+version: Visual Studio 2019
• Conan version: 1.38.0
• Python version: 3.8.3

I’m trying to use the new layout method but it seems it’s not working correctly. After my package is built with conan create test package build fails with the error:

Cannot open include file: 'foo.h': No such file or directory

In the generated solution file (I’m working with Visual Studio) the Additional Include Directories section is empty. It seems that the layout() method doesn’t propagate include directories to clients. It works neither with components nor without them. At the same time, the libraries, the client should link against, are propagated as intended (generators in use are: CMakeDeps and CMakeToolchain):

def layout(self):
          self.cpp.package.includedirs = ["foo/include"]  # not propagated
          self.cpp.package.libs = ["foo"]  # propagated
          self.cpp.package.components["foo"].includedirs = ["foo/include"]  # not propagated

• I’ve read the CONTRIBUTING guide.

[memsharded]

We plan to branch 1.39 to be released next week, this Friday 23 if possible, it would be great to have feedback by then if there is a chance to be included in 1.39.

[gmikhaile]

Thank you for the clarification.