[bug] Reusing CMake macros through tool_requires fails with specified host and build profile

Hello Conan Team

Environment Details (include every applicable attribute)

Operating System+version: Ubuntu 22.04
Compiler+version: gcc 11
Conan version: 1.53
Python version: 3.10.6

Steps to reproduce (Include if Applicable)

Use a host and build profiles such as

[settings]
os=Linux
os.platform=Project.Debian
os_build=Linux
arch=x86_64
arch_build=x86_64
compiler=gcc
compiler.version=11
compiler.libcxx=libstdc++11
build_type=Release
[options]
[build_requires]
[env]

[tool_requires]
CustomCMakeUtils/0.1@fjp/stable

CustomCMakeUtils conan package that provides CMake module which includes commonly used cmake macros and functions.

from conan import ConanFile

class CustomCMakeUtils Conan(ConanFile):
  name = "CustomCMakeUtils "
  description = "CMake utils for components."
  version = "0.1"

  cmake_modules = ['CustomUtils.cmake']
  exports_sources = cmake_modules

  def package_id(self):
      del self.info.settings.os
      del self.info.settings.arch
      del self.info.settings.compiler
      del self.info.settings.build_type

  def package(self):
      for module in self.cmake_modules:
          self.copy(module)

  def package_info(self):
      # old cmake_find_package generators
      self.cpp_info.build_modules = self.cmake_modules
      # cmake 2.0, CMakeDeps generator
      self.cpp_info.set_property("cmake_build_modules", self.cmake_modules)

Conan Package that relies on CustomCMakeUtils, using find_package(CustomCMakeUtils REQUIRED) in its top level CMakeLists.txt.

cmake_minimum_required(VERSION 3.15)
project(app CXX)

find_package(CustomCMakeUtils REQUIRED)
add_library(app src/app.cpp)
target_include_directories(app PUBLIC include)

set_target_properties(app PROPERTIES PUBLIC_HEADER "include/app.h")
install(TARGETS app)

Logs (Executed commands with output) (Include/Attach if Applicable)

Runningn with both, host and build profile, doesn't generate the CustomCMakeUtils cmake module, which will result in a CMake error during conan build .

app$ conan install . -pr:h default -pr:b default -b missing
Configuration (profile_host):
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=11
os=Linux
os.platform=Project.Debian
os_build=Linux
[options]
[build_requires]
*: CustomCMakeUtils/0.1@fjp/stable
[env]

Configuration (profile_build):
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=11
os=Linux
os.platform=Project.Debian
os_build=Linux
[options]
[build_requires]
*: CustomCMakeUtils/0.1@fjp/stable
[env]

conanfile.py (app/None): Installing package
Requirements
Packages
Build requirements
    CustomCMakeUtils/0.1@fjp/stable from 'my-remote' - Cache
Build requirements packages
    CustomCMakeUtils/0.1@fjp/stable:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache

Installing (downloading, building) binaries...
CustomCMakeUtils/0.1@fjp/stable: Already installed!
conanfile.py (app/None): Applying build-requirement: CustomCMakeUtils/0.1@fjp/stable
conanfile.py (app/None): Generator txt created conanbuildinfo.txt
conanfile.py (app/None): Generator 'CMakeDeps' calling 'generate()'
conanfile.py (app/None): Calling generate()
conanfile.py (app/None): Preset 'release' added to CMakePresets.json. Invoke it manually using 'cmake --preset release'
conanfile.py (app/None): If your CMake version is not compatible with CMakePresets (<3.19) call cmake like: 'cmake <path> -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=/home/fjp/dev/app/build/generators/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release'
conanfile.py (app/None): Aggregating env generators
conanfile.py (app/None): Generated conaninfo.txt
conanfile.py (app/None): Generated graphinfo

app$ ls build/generators/
cmakedeps_macros.cmake  CMakePresets.json  conan_toolchain.cmake

When only specifying the host profile the CustomCMakeModule is available and the build succeeds:

app$ conan install . -pr:h default -b missing
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=11
os=Linux
os.platform=Project.Debian
os_build=Linux
[options]
[build_requires]
*: CustomCMakeUtils/0.1@fjp/stable
[env]

conanfile.py (app/None): Installing package
Requirements
Packages
Build requirements
    CustomCMakeUtils/0.1@fjp/stable from 'my-remote' - Cache
Build requirements packages
    CustomCMakeUtils/0.1@fjp/stable:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache

Installing (downloading, building) binaries...
CustomCMakeUtils/0.1@fjp/stable: Already installed!
conanfile.py (app/None): Applying build-requirement: CustomCMakeUtils/0.1@fjp/stable
conanfile.py (app/None): WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior
conanfile.py (app/None): Generator 'CMakeDeps' calling 'generate()'
conanfile.py (app/None): Generator txt created conanbuildinfo.txt
conanfile.py (app/None): Calling generate()
conanfile.py (app/None): WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior
conanfile.py (app/None): Preset 'release' added to CMakePresets.json. Invoke it manually using 'cmake --preset release'
conanfile.py (app/None): If your CMake version is not compatible with CMakePresets (<3.19) call cmake like: 'cmake <path> -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=/home/fjp/dev/app/build/generators/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release'
conanfile.py (app/None): Aggregating env generators
conanfile.py (app/None): Generated conaninfo.txt
conanfile.py (app/None): Generated graphinfo

app$ ls build/generators/
cmakedeps_macros.cmake  conan_toolchain.cmake  CustomCMakeUtilsConfigVersion.cmake         CustomCMakeUtils-Target-release.cmake
CMakePresets.json       CustomCMakeUtilsConfig.cmake   CustomCMakeUtils-release-x86_64-data.cmake  CustomCMakeUtilsTargets.cmake

A workaround for this is to use self.requires("CustomCMakeUtilsTargets/0.1@fjp/stable") in the app recipe. Is there a reason why this is not working in the [tool_requires] section of the profiles and having both host and build profiles set?

Another question is about the name of test_requires(): CustomCMakeUtilsTargets isn't really suitable for the self.requires method as it is only used during build time for CMake. However, setting it as a requirement through self.test_requires doesn't make any sense either as it is not test related. self.build_requires would convey perfect meaning but that is going to be removed^rem:

Note: The test_requires(), available from Conan 1.43, is equivalent to the previous self.build_requires(, force_host_context=True) syntax. As the later is going to dissapear in Conan 2.0, the former test_requires() form is recommended.

What is the recommended way of reusing CMake macros, functions etc? And is there a chance that self.build_requires stays?

conan-io / conan