Description of problem: - "python setup.py build" supports --build-lib - "python setup.py install" does NOT supports --build-lib, so the files from above cannot be installed. - "python setup.py install_lib" DOES support --build-lib Please add the --build-lib argument also to the general install command, so that one can build and install in a specific (version aware) directory. Version-Release number of selected component (if applicable): python2 and python3 How reproducible: always Steps to Reproduce: 1. python setup.py build --build-lib=build/lib.%{_os}-%{_target_cpu}-%{python2_version} 2. python setup.py install --build-lib=build/lib.%{_os}-%{_target_cpu}-%{python2_version} Actual results: python setup.py install --build-lib=build/lib.%{_os}-%{_target_cpu}-%{python2_version} usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...] or: setup.py --help [cmd1 cmd2 ...] or: setup.py --help-commands or: setup.py cmd --help error: option --build-dir not recognized Expected results: python setup.py install --build-lib=build/lib.%{_os}-%{_target_cpu}-%{python2_version} just works Additional info/background of problem: python tries to detect if the package is a purelib and builds then when invoking "setup.py build" in the directory "build/lib". This works fine when building for only one python implementation but causes conflicts when building for python2 and python3 at the same time. This can be seen when a project is calling 2to3 in the build phase. The steps that one would put into a spec file is: 1. Build with python2 # build/lib will contain python2 files 2. Build with python3 # build/lib will contain python3 files 3. Install with python2 # python3 files from build/lib are installed 4. Install with python3 # python3 files from build/lib are installed One solution to this problem is to build with --build-lib=build/lib.%{_os}-%{_target_cpu}-%{python3_version} or the python2_version.
Should this really block bz1076441?
This causes problems with the new py2_build and py3_build macros so is definitely a python2->python3 issue. Therefore, solving this will make the transition to python3 much easier.
Hmm, while looking at implementing it I found this in the source code: from Lib/distutils/command/install.py: 199 # These are only here as a conduit from the 'build' command to the 200 # 'install_*' commands that do the real work. ('build_base' isn't 201 # actually used anywhere, but it might be useful in future.) They 202 # are not user options, because if the user told the install 203 # command where the build directory is, that wouldn't affect the 204 # build command. 205 self.build_base = None 206 self.build_lib = None So --build-lib is not an option on purpose because one must somehow trust the user to point to the correct build directory, which the author of these lines obviously doesn't. Maybe having an option that does disable the pure python mode and does build in a version- (and arch-) specific directory by default would make more sense given the above comment? What do you think?
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This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle. Changing version to '24'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase
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Thomas, is this still relevant? I don't understand the issue at first glance, and I wonder if I should make the effort to investigate.
As the py?_build and py?_install macros work also now with the current status, a fix for the above is probably not needed anymore and can be further investigated, when there are problems withusing python2 and python3 installs in the same spec. Thanks