[bug] {{profile_dir}} is expanded incorrectly when used in subdir

[andrey-zherikov]

Environment details

• Operating System+version: Windows 11
• Compiler+version: N/A
• Conan version: 2.1.0
• Python version: 3.10.2

Steps to reproduce

Small setup.bat file to create profiles:

set CONAN_HOME=%cd%\.conan2
mkdir %CONAN_HOME%\profiles\fragment\os
(echo [conf] & echo tools.cmake.cmaketoolchain:user_toolchain = [ "{{profile_dir}}/toolchain.cmake" ]) > %CONAN_HOME%\profiles\fragment\os\windows
echo include(fragment/os/windows) > %CONAN_HOME%\profiles\myprofile

Once executed, it creates the following structure in .conan2 dir:

├── profiles
│   ├── fragment
│   │   └── os
│   │       └── windows
│   └── myprofile

File content for reference:

• profiles/myprofile

  include(fragment/os/windows)
  

• profiles/fragment/os/windows

  [conf]
  tools.cmake.cmaketoolchain:user_toolchain = [ "{{profile_dir}}/toolchain.cmake" ]
  

Logs

Execute conan profile show -pr:a myprofile and see invalid toolchain path:

Host profile:
[settings]
[conf]
tools.cmake.cmaketoolchain:user_toolchain=['C:\\conan-test\\.conan2\\profiles\x0cragment/os/toolchain.cmake']

Build profile:
[settings]
[conf]
tools.cmake.cmaketoolchain:user_toolchain=['C:\\conan-test\\.conan2\\profiles\x0cragment/os/toolchain.cmake']

[memsharded]

Thanks for your report @andrey-zherikov

This was an unfortunate issue with the loading of confs and Windows backslash.
I am submitting a fix in #15727 for next release.

[memsharded]

#15727 merged, this will be in the next release

[andrey-zherikov]

@memsharded Is it possible to port this fix into 2.1.* patch release?
I think I'm facing this issue in our prod:
I have tools.cmake.cmaketoolchain:user_toolchain = [ "{{conan_home_folder}}/profiles/toolchain/{{platform.system().lower()}}.cmake" ] in global.conf
This is expanded to the following piece of profile:

[conf]
tools.cmake.cmaketoolchain:user_toolchain=['D:\\Jenkins\\workspaces\\conan\\workspace\ty_cmake-install-bb-library_main@2/.conan2/profiles/toolchain/windows.cmake']

And \t in the path above is converted to <tab>:

-- Using Conan toolchain: D:/Jenkins/workspaces/conan/workspace/ty_cmake-install-bb-library_main@2/.conan2/p/b/cmakef116027922a0c/b/conan_toolchain.cmake
CMake Error at D:/Jenkins/workspaces/conan/workspace/ty_cmake-install-bb-library_main@2/.conan2/p/b/cmakef116027922a0c/b/conan_toolchain.cmake:17 (include):
  include could not find requested file:

    D:/Jenkins/workspaces/conan/workspace	y_cmake-install-bb-library_main@2/.conan2/profiles/toolchain/windows.cmake
Call Stack (most recent call first):
C:/basbuild/build-tools/cmake/share/cmake-3.26/Modules/CMakeDetermineSystem.cmake:148 (include)
CMakeLists.txt:3 (project)

[memsharded]

At the moment a patch release is not planned, those are reserved mostly for regressions or large impact bugs.
I'll sync with the team, the Conan 2.2 release shouldn't be far away.

[andrey-zherikov]

@memsharded Is there any 2.2 pre-release I can test with?

[memsharded]

Running from develop2 branch (clone and pip install -e . in the repo)

[andrey-zherikov]

Tested with Conan version 2.2.0-dev - seems it's a different bug and it's still there:

-- Using Conan toolchain: C:/1/ty_cmake-install-bb-library_main@2/.conan2/p/b/cmake151f9b67b11af/b/conan_toolchain.cmake
CMake Error at C:/1/ty_cmake-install-bb-library_main@2/.conan2/p/b/cmake151f9b67b11af/b/conan_toolchain.cmake:17 (include):
  include could not find requested file:

    C:� y_cmake-install-bb-library_main@2/.conan2/profiles/toolchain/windows.cmake
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.23/Modules/CMakeDetermineSystem.cmake:124 (include)
  CMakeLists.txt:3 (project)

@memsharded Do you want me to create another issue?

[memsharded]

Yes, please, open another ticket with details to reproduce that new error.
It might be a difficult one to reproduce, looks like path encodings issues.

[andrey-zherikov]

Created #15868