[bug] latest conan 2.3.0-git does not install fftw

[mmomtchev]

Describe the bug

Ubuntu 22.04, Python 3.10, latest conan git

How to reproduce it

pip install git+https://github.com/conan-io/conan
conan install --requires fftw/3.3.10 --build='*'

-------- Installing package fftw/3.3.10 (1 of 1) --------
fftw/3.3.10: Building from source
fftw/3.3.10: Package fftw/3.3.10:80a0f31ebf64b0a37a0c0545fe0f924772616e2c
fftw/3.3.10: Copying sources to build folder
fftw/3.3.10: Building your package in /home/mmom/.conan2/p/b/fftw5da396d5fe88f/b
fftw/3.3.10: Calling generate()
fftw/3.3.10: Generators folder: /home/mmom/.conan2/p/b/fftw5da396d5fe88f/b/build/Release/generators
fftw/3.3.10: CMakeToolchain generated: conan_toolchain.cmake
fftw/3.3.10: CMakeToolchain generated: /home/mmom/.conan2/p/b/fftw5da396d5fe88f/b/build/Release/generators/CMakePresets.json
fftw/3.3.10: CMakeToolchain generated: /home/mmom/.conan2/p/b/fftw5da396d5fe88f/b/src/CMakeUserPresets.json
fftw/3.3.10: Generating aggregated env files
fftw/3.3.10: Generated aggregated env files: ['conanbuild.sh', 'conanrun.sh']
fftw/3.3.10: Calling build()
fftw/3.3.10: apply_conandata_patches(): No patches defined in conandata
fftw/3.3.10: Running CMake.configure()
fftw/3.3.10: RUN: cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/home/mmom/.conan2/p/b/fftw5da396d5fe88f/p" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" -DENABLE_FLOAT="ON" -DENABLE_LONG_DOUBLE="OFF" -DENABLE_QUAD_PRECISION="OFF" "/home/mmom/.conan2/p/b/fftw5da396d5fe88f/b/src"
CMake Error at /usr/share/cmake-3.22/Modules/CMakeDetermineSystem.cmake:130 (message):
  Could not find toolchain file: generators/conan_toolchain.cmake
Call Stack (most recent call first):
  CMakeLists.txt:7 (project)


CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!

fftw/3.3.10: ERROR: 
Package '80a0f31ebf64b0a37a0c0545fe0f924772616e2c' build failed
fftw/3.3.10: WARN: Build folder /home/mmom/.conan2/p/b/fftw5da396d5fe88f/b/build/Release/single
ERROR: fftw/3.3.10: Error in build() method, line 117
	cmake.configure(variables=variables)
	ConanException: Error 1 while executing

conan is not in the right directory - there is a single subdirectory.

conan 2.2.3 installs this package.

[memsharded]

Thanks for reporting this @mmomtchev

It seems that this recipe is overriding the build_folder:

@property
    def build_folder(self):
        bf = super().build_folder
        return os.path.join(bf, self._current_precision) if self._current_precision else bf

I think this is not allowed. The Conan attributes are not modifiable/overrideables from user side: https://docs.conan.io/2/reference/conanfile.html

Public attributes and methods, like build(), self.package_folder, are reserved for Conan. Don’t use public members for custom fields or methods in the recipes.

So far this seems a recipe bug. I guess this doesn't happen with other ConanCenter recipes, does it?

[memsharded]

It was a recipe issue, solved by conan-io/conan-center-index#23792