propagate abiflags to wheel name on Windows #2325

davidhewitt · 2024-11-26T21:35:40Z

At the moment the windows builds are hard coded to use the none abi tag (unless they are abi3). I think this is probably technically incorrect, though in practice has worked fine historically because there was only one build on Windows... until 3.13t has come along with free-threading as a second option :)

It's important that we do emit proper abi tags (e.g. cp313, cp313t) because otherwise the two 3.13 wheels end up with the same name and can't be uploaded to PyPI. I think I also saw some install failures on jiter CI where a Python 3.13 build ended up installing the other build's wheel (I think pip detected an incorrect lib name and rejected it).

I suspect I might need to fix some tests...

davidhewitt · 2024-11-26T21:41:30Z

For what it's worth, I verified with pip debug --verbose (on a Windows machine) that the cp313 abi tags are accepted.

Also, numpy ships windows wheels with proper abi tags, e.g.

https://pypi.org/project/numpy/#numpy-2.1.3-cp313-cp313-win_amd64.whl
https://pypi.org/project/numpy/#numpy-2.1.3-cp313-cp313t-win_amd64.whl

davidhewitt · 2024-11-26T22:05:10Z

@ngoldbaum any idea about the 3.13t failure? Looks like a setup-python issue, I also just hit the same thing in pydantic/jiter#172

ngoldbaum · 2024-11-26T22:46:12Z

I reported it over at Quansight-Labs/setup-python#4. I honestly have no idea what changed on the runners.

ngoldbaum · 2024-11-26T23:01:18Z

never mind, the python.org ftp fell over: python/pythondotorg#2663

ngoldbaum · 2024-11-27T00:36:27Z

I also hit this over on rpds-py: https://github.com/ngoldbaum/rpds/actions/runs/12041384455/job/33573211395#step:4:137

The issue with python.org is fixed so I think if you restart CI it will at least get past installing python.

davidhewitt · 2024-11-27T10:29:41Z

I pushed an additional commit which should hopefully fix the test failures. I was looking in sysconfig on Windows and I noticed that lowercase variable "abiflags" is present on all platforms for 3.7+, whereas uppercase "ABIFLAGS" is only present on unix.

The two seem to always be equivalent on unix platforms, so I think we're fine to switch to lower-case "abiflags" as the thing we query out of the Python interpreter.

Result of grepping sysconfig directory

$ grep -Ri abiflags sysconfig 
sysconfig/cpython-freebsd-13.1-armv7.txt:       ABIFLAGS = ""
sysconfig/cpython-freebsd-13.1-armv7.txt:       abiflags = ""
sysconfig/pypy-macos-3.7-7.3.txt:       abiflags = ""
sysconfig/pypy-linux-3.7-7.3.txt:       abiflags = ""
sysconfig/cpython-omnios-3.9.txt:        ABIFLAGS = ""
sysconfig/cpython-omnios-3.9.txt:        abiflags = ""
sysconfig/cpython-win-3.7.txt:  abiflags = ""
sysconfig/cpython-openbsd-3.8-aarch64.txt:      ABIFLAGS = ""
sysconfig/cpython-openbsd-3.8-aarch64.txt:      abiflags = ""
sysconfig/pypy-linux-s390x-3.7-7.3.txt: ABIFLAGS = ""
sysconfig/pypy-linux-s390x-3.7-7.3.txt: abiflags = ""
sysconfig/cpython-linux-mips64-3.11.txt:        ABIFLAGS = ""
sysconfig/cpython-linux-mips64-3.11.txt:        abiflags = ""
sysconfig/cpython-freebsd-13.0-aarch64.txt:        ABIFLAGS = "m"
sysconfig/cpython-freebsd-13.0-aarch64.txt:        abiflags = "m"
sysconfig/cpython-macos-3.9-arm64.txt:  ABIFLAGS = ""
sysconfig/cpython-macos-3.9-arm64.txt:  abiflags = ""
sysconfig/cpython-aix-3.9.txt:  ABIFLAGS = ""
sysconfig/cpython-aix-3.9.txt:  abiflags = ""
sysconfig/cpython-linux-3.9.txt:        ABIFLAGS = ""
sysconfig/cpython-linux-3.9.txt:        abiflags = ""
sysconfig/pypy-linux-ppc64le-3.8-7.3.txt:       ABIFLAGS = ""
sysconfig/pypy-linux-ppc64le-3.8-7.3.txt:       abiflags = ""
sysconfig/cpython-linux-3.8.txt:        ABIFLAGS = ""
sysconfig/cpython-linux-3.8.txt:        abiflags = ""
sysconfig/pypy-linux-ppc64le-3.9-7.3.txt:       ABIFLAGS = ""
sysconfig/pypy-linux-ppc64le-3.9-7.3.txt:       abiflags = ""
sysconfig/cpython-openbsd-3.8.txt:      ABIFLAGS = ""
sysconfig/cpython-openbsd-3.8.txt:      abiflags = ""
sysconfig/cpython-haiku-3.9.txt:        ABIFLAGS = ""
sysconfig/cpython-haiku-3.9.txt:        abiflags = ""
sysconfig/cpython-gnu-3.12.txt: ABIFLAGS = ""
sysconfig/cpython-gnu-3.12.txt: abiflags = ""
sysconfig/cpython-win-mingw64-3.9.txt:        ABIFLAGS = ""
sysconfig/cpython-win-mingw64-3.9.txt:        abiflags = ""
sysconfig/graalpy-macos-3.8-arm64.txt:  ABIFLAGS = ""
sysconfig/graalpy-macos-3.8-arm64.txt:  abiflags = ""
sysconfig/pypy-linux-s390x-3.8-7.3.txt: ABIFLAGS = ""
sysconfig/pypy-linux-s390x-3.8-7.3.txt: abiflags = ""
sysconfig/cpython-freebsd-13.0-powerpc64.txt:   ABIFLAGS = ""
sysconfig/cpython-freebsd-13.0-powerpc64.txt:   abiflags = ""
sysconfig/nogil-linux-3.9.txt:  ABIFLAGS = ""
sysconfig/nogil-linux-3.9.txt:  abiflags = ""
sysconfig/cpython-wasi-3.12.txt:        ABIFLAGS = ""
sysconfig/cpython-wasi-3.12.txt:        abiflags = ""
sysconfig/cpython-freebsd-14.0-riscv64.txt:        ABIFLAGS = ""
sysconfig/cpython-freebsd-14.0-riscv64.txt:        abiflags = ""
sysconfig/pypy-windows-3.7-7.3.txt:        abiflags = ""
sysconfig/cpython-linux-mips64el-3.10.txt:      ABIFLAGS = ""
sysconfig/cpython-linux-mips64el-3.10.txt:      abiflags = ""
sysconfig/cpython-freebsd-13.0-powerpc64le.txt: ABIFLAGS = ""
sysconfig/cpython-freebsd-13.0-powerpc64le.txt: abiflags = ""
sysconfig/pypy-linux-s390x-3.9-7.3.txt: ABIFLAGS = ""
sysconfig/pypy-linux-s390x-3.9-7.3.txt: abiflags = ""
sysconfig/cpython-android-3.8-aarch64.txt:      ABIFLAGS = ""
sysconfig/cpython-android-3.8-aarch64.txt:      abiflags = ""
sysconfig/cpython-linux-3.7.txt:        ABIFLAGS = "m"
sysconfig/cpython-linux-3.7.txt:        abiflags = "m"
sysconfig/cpython-linux-3.8-aarch64.txt:    ABIFLAGS = ""
sysconfig/cpython-linux-3.8-aarch64.txt:    abiflags = ""
sysconfig/cpython-win-3.9-aarch64.txt:        abiflags = ""
sysconfig/cpython-dragonfly-3.8.txt:    ABIFLAGS = ""
sysconfig/cpython-dragonfly-3.8.txt:    abiflags = ""
sysconfig/cpython-freebsd-11.2.txt:     ABIFLAGS = "m"
sysconfig/cpython-freebsd-11.2.txt:     abiflags = "m"
sysconfig/pypy-linux-ppc64le-3.7-7.3.txt:       ABIFLAGS = ""
sysconfig/pypy-linux-ppc64le-3.7-7.3.txt:       abiflags = ""
sysconfig/cpython-netbsd-3.9.txt:       ABIFLAGS = ""
sysconfig/cpython-netbsd-3.9.txt:       abiflags = ""
sysconfig/pyston-3.8.txt:       ABIFLAGS = ""
sysconfig/pyston-3.8.txt:       abiflags = ""

davidhewitt · 2024-11-27T10:52:59Z

Ok will debug more later...

davidhewitt · 2024-11-27T21:30:56Z

Ok, I take it back. The abiflags seems to always be empty on windows, I missed that earlier.

sysconfig/cpython-win-3.7.txt:  abiflags = ""

... I've pushed a commit which manually encodes the expected flags.

messense · 2024-11-28T13:40:39Z

Seems like the wheel tag is still wrong for abi3 on Windows when building for 3.13t:

D:\a\_temp\54c3be4a-579c-4bd8-b031-a116c3fc0582\maturin.exe build --target x86_64-pc-windows-msvc --release --out dist -i python3.13t
🔗 Found pyo3 bindings with abi3 support for Python ≥ 3.8
🐍 Not using a specific python interpreter (Automatically generating windows import library)
📡 Using build options features from pyproject.toml
   Compiling pyo3-build-config v0.23.2
   Compiling pyo3-ffi v0.23.2
   Compiling pyo3-macros-backend v0.23.2
   Compiling pyo3 v0.23.2
   Compiling pyo3-macros v0.23.2
   Compiling nh3 v0.2.18 (D:\a\nh3\nh3)
    Finished `release` profile [optimized] target(s) in 11.97s
📖 Found type stub file at nh3.pyi
📦 Built wheel for abi3 Python ≥ 3.8 to dist\nh3-0.2.18-cp38-abi3-win_amd64.whl

https://github.com/messense/nh3/actions/runs/12069973856/job/33658408634#step:6:32

davidhewitt · 2024-11-28T13:54:42Z

Agh thanks for flagging, I can try to investigate tonight if you don't get there first :)

messense · 2024-11-28T14:43:45Z

So the problem is that windows abi3 wheel currently doesn't not resolve python interpreter correctly for 3.13t, see

maturin/src/build_options.rs

Lines 372 to 391 in 57c74b6

    
           if env::var_os("PYO3_CROSS_LIB_DIR").is_some() { 
        
               // PYO3_CROSS_LIB_DIR should point to the `libs` directory inside base_prefix 
        
               // when cross compiling, so we fake a python interpreter matching it 
        
               eprintln!("⚠️  Cross-compiling is poorly supported"); 
        
               Ok(vec![PythonInterpreter { 
        
                   config: InterpreterConfig { 
        
                       major: *major as usize, 
        
                       minor: *minor as usize, 
        
                       interpreter_kind: InterpreterKind::CPython, 
        
                       abiflags: "".to_string(), 
        
                       ext_suffix: ".pyd".to_string(), 
        
                       pointer_width: None, 
        
                       gil_disabled: false, 
        
                   }, 
        
                   executable: PathBuf::new(), 
        
                   platform: None, 
        
                   runnable: false, 
        
                   implementation_name: "cpython".to_string(), 
        
                   soabi: None, 
        
               }])

and

maturin/src/build_options.rs

Lines 401 to 418 in 57c74b6

    
           eprintln!("🐍 Not using a specific python interpreter (Automatically generating windows import library)"); 
        
           // fake a python interpreter 
        
           Ok(vec![PythonInterpreter { 
        
               config: InterpreterConfig { 
        
                   major: *major as usize, 
        
                   minor: *minor as usize, 
        
                   interpreter_kind: InterpreterKind::CPython, 
        
                   abiflags: "".to_string(), 
        
                   ext_suffix: ".pyd".to_string(), 
        
                   pointer_width: None, 
        
                   gil_disabled: false, 
        
               }, 
        
               executable: PathBuf::new(), 
        
               platform: None, 
        
               runnable: false, 
        
               implementation_name: "cpython".to_string(), 
        
               soabi: None, 
        
           }])

these hacks work fine before but fell short with 3.13t.

I'm off to sleep now, feel free to investigate further.

This is an attempt to fix #2325 (comment) (Not tested yet, I wanted to push and see how this runs on CI as well as test locally.) --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

propagate abiflags to wheel name on Windows

a89372b

davidhewitt mentioned this pull request Nov 26, 2024

ci: remove workaround for free-threaded build w. maturin pydantic/jiter#172

Merged

add "m" abiflag on Windows 3.7

995e6ad

simplify fun_with_abiflags

551a505

manually define abiflags for windows

6f18204

ensure not panic

4f6a855

messense approved these changes Nov 28, 2024

View reviewed changes

messense merged commit d7f11c9 into PyO3:main Nov 28, 2024
38 checks passed

davidhewitt mentioned this pull request Nov 28, 2024

fix abi3 interpreter discovery on Windows #2333

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propagate abiflags to wheel name on Windows #2325

propagate abiflags to wheel name on Windows #2325

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propagate abiflags to wheel name on Windows #2325

propagate abiflags to wheel name on Windows #2325

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