Description

thexai

opened on Jun 27, 2026

Issue body actions

Feature or enhancement

Proposal:

• Add alternative UWP API functionality when available.
• Modernize the Windows code when there are alternatives that are also compatible with UWP.
• Add additional guards for Windows code that not builds for UWP.

The final goal is able to build for Xbox and reduce the patches required in Kodi --> Upstream some generic UWP patches here.

I propose upload small patches geared towards specific targets and always keeping current Windows functionality untouched.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Linked PRs

• gh-152433: Windows: use GetFileSizeEx instead of GetFileSize #152383
• gh-152433: Windows: enable mmapmodule for UWP #152473
• gh-152433: Windows: allow build mimalloc for UWP #152477
• gh-152433: Windows: implement os.cpu_count() for UWP #152479
• gh-152433: Windows: allow build socketmodule for UWP #152601
• gh-152433: Windows: fix errors in sys.getwindowsversion() for UWP build #152604
• gh-152433 Windows: faulthandler.c allow build in UWP #152688
• gh-152433: Windows: allow build ceval.c for UWP #152689
• gh-152433: Windows: _winapi.c implement GetVersion() UWP alternative #152694
• gh-152433: Windows: _ssl module: improve UWP compatibility #152791
• gh-152433: Windows: _ctypes module: improve UWP compatibility #152792
• gh-152433: Windows: _uuid module: improve UWP compatibility #152793
• gh-152433: Windows: make dynload_win.c UWP compatible #152797
• gh-152433: Windows: _winapi module: improve UWP compatibility #152962
• gh-152433: Windows: allow posixmodule.c to build for Windows UWP #152998
• gh-152433: Windows: use CreateFile2 on Windows UWP build #153021
• gh-152433: Windows: allow build overlapped.c for UWP #153036
• [3.15] gh-152433: Allow _ssl module to build for Windows UWP API set (GH-152791) #153216
• gh-152433: Windows: modernize and refactor fileutils to allow build for Windows UWP #153700
• gh-152433: Windows: do not use _syscmd_ver() on UWP build #154642
• gh-152433: Windows: fix ctypes error in UWP build #154700
• gh-152433: Windows: change winreg to conditional import for UWP compatibility #154918
• gh-152433: Windows: use LoadLibrary in UWP for system libs #156972
• gh-152433: Make ctypes callbacks work on Windows UWP builds #161539
• gh-152433: Windows: Not use LoadPackagedLibrary for mimalloc (UWP build) #161546

Activity

1. thexai

   added

   type-featureA feature request or enhancementA feature request or enhancement

   on Jun 27, 2026
2. picnixz

   added

   OS-windows

   buildThe build process and cross-buildThe build process and cross-build

   on Jun 27, 2026
3. picnixz commented on Jun 27, 2026

   

   picnixz

   on Jun 27, 2026

   Member

   More actions

   cc @zooba @chris-eibl
4. chris-eibl commented on Jun 27, 2026

   

   chris-eibl

   on Jun 27, 2026

   Member

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   Hm, this first PR lgtm and no objections if the following ones are similar.

   Adding @maxbachmann for visibility, who did similar Xbox PRs in the past.
5. thexai commented on Jun 27, 2026

   

   thexai

   on Jun 27, 2026

   ContributorAuthor

   More actions

   The first one was extreme easy, there will be more complicated ones... but that's the idea :)

   I believe some previous work was for the MS_WINDOWS_GAMES partition, but in my case I'm going to focus on the MS_WINDOWS_APP partition (Xbox Apps, not Games).

   One thing that will complicate the patches quite a bit is that MS_WINDOWS_APP is defined for both Desktop and UWP and it creates a lot of complication and confusion in the #ifdef blocks, perhaps at some point we will have to decide whether to change this, but for the moment I'm going to try to avoid it.

   In my private patches these definitions are exclusive but this requires modifications for the main branch.

   For reference:
   https://github.com/thexai/cpython/blob/6e8b0fc79f676d869a14370b11f57358d7a1621a/PC/pyconfig.h#L91-L97

   And full Kodi patches (branch 3.14): https://github.com/thexai/cpython/tree/kodi/3.14.6
6. maxbachmann commented on Jun 27, 2026

   

   maxbachmann

   on Jun 27, 2026

   Contributor

   More actions

   Yes my previous work was for xbox games. We are currently on 3.13 with all our patches for the xbox support upstreamed.
   However we don't build some of the "freestanding" modules that we don't use -> not sure they ever compiled. For other app partitions I didn't do any testing back then.
7. thexai

   added 8 commits that reference this issue on Jun 28, 2026

   pythongh-152433: Windows: enable mmapmodule for UWP

   c6300cb

   pythongh-152433: Windows: implement os.cpu_count() for UWP

   d96aa51

   pythongh-152433: Windows: Use GetFileSizeEx instead of GetFileSize

   8b9c4cb

   pythongh-152433: Windows: implement os.cpu_count() for UWP

   e0e02b1

   pythongh-152433: Windows: Use GetFileSizeEx instead of GetFileSize

   5b828bc

   pythongh-152433: Windows: Use GetFileSizeEx instead of GetFileSize

   2791f86

   pythongh-152433: Windows: enable mmapmodule for UWP

   4eda942

   pythongh-152433: Windows: Use GetFileSizeEx instead of GetFileSize

   7952170
8. 202 remaining items

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9. clin1234

   added 2 commits that reference this issue on Sep 12, 2026

   pythongh-152433: Windows: make ``dynload_win.c`` UWP compatible (pyth…

   789a37a

   pythongh-152433: Windows: change ``winreg`` to conditional import for…

   4c12b5f
10. johnslavik

    added 8 commits that reference this issue on Sep 14, 2026

    pythongh-152433: Use regular LoadLibrary in UWP for Windows system li…

    4cd7afc

    pythongh-152433: Windows: allow build socketmodule for UWP (python#15…

    5e8808b

    pythongh-152433: Windows: allow build ``ceval.c`` for UWP (python#152689

    5bf9d6b

    pythongh-152433: Windows: ``_ctypes`` module: improve UWP compatibili…

    16cda6d

    pythongh-152433: Windows: ``_winapi`` module: improve UWP compatibili…

    89a279d

    pythongh-152433: Windows: allow build ``overlapped.c`` for UWP (pytho…

    fcb8d9b

    pythongh-152433: Windows: make ``dynload_win.c`` UWP compatible (pyth…

    cd0a288

    pythongh-152433: Windows: change ``winreg`` to conditional import for…

    1394465
11. thexai

    added a commit that references this issue on Sep 17, 2026

    pythongh-152433: Windows: fix ``ctypes`` MemoryError in UWP build

    3c4f753
12. zooba

    added a commit that references this issue on Sep 17, 2026

    gh-152433: Fix ctypes import error on Windows UWP builds (GH-154700)

    0f00aef
13. thexai

    added a commit that references this issue on Sep 19, 2026

    pythongh-152433: Windows: use ``CreateFile2`` on Windows UWP build

    e53c111
14. thexai

    added 2 commits that reference this issue on Nov 7, 2026

    pythongh-152433: Make ctypes callbacks work on Windows UWP builds

    de86e82

    pythongh-152433: Windows: use ``CreateFile2`` on Windows UWP build

    1a0ca4e

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