The absence of compiled extension is the source of failure for the Windows 64bit wheels only, that is:

scikit-learn/.github/workflows/wheels.yml

Lines 58 to 69 in fd0e815

    
           - os: windows-2019 
        
             python: 38 
        
             bitness: 64 
        
             platform_id: win_amd64 
        
           - os: windows-latest 
        
             python: 39 
        
             bitness: 64 
        
             platform_id: win_amd64 
        
           - os: windows-latest 
        
             python: 310 
        
             bitness: 64 
        
             platform_id: win_amd64

The other Windows 32bit wheels, that is:

scikit-learn/.github/workflows/wheels.yml

Lines 71 to 79 in fd0e815

    
           # Window 32 bit 
        
           - os: windows-latest 
        
             python: 38 
        
             bitness: 32 
        
             platform_id: win32 
        
           - os: windows-latest 
        
             python: 39 
        
             bitness: 32 
        
             platform_id: win32

aren't built because SciPy needs to be built from source and a Fortran compilation error occurs as stated in #24446 (comment):

 ..\..\meson.build:49:0: ERROR: Executables created by Fortran compiler gfortran are not runnable.

this might be related to the lack of a compiler toolchain for win32 as stated in this thread in Scientific Python's discourse:

For SciPy 1.9.0 we are switching to Meson as the default build system, with the numpy.distutils based build still available as a backup. Currently there is no compiler toolchain which works with the Meson build and allows us to build 32-bit wheels for distribution.

	- os: windows-2019
	python: 38
	bitness: 64
	platform_id: win_amd64
	- os: windows-latest
	python: 39
	bitness: 64
	platform_id: win_amd64
	- os: windows-latest
	python: 310
	bitness: 64
	platform_id: win_amd64

	# Window 32 bit
	- os: windows-latest
	python: 38
	bitness: 32
	platform_id: win32
	- os: windows-latest
	python: 39
	bitness: 32
	platform_id: win32

Uh oh!

⚠️ CI failed on Wheel builder ⚠️ #24612

Description

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions