PDM installs wrong architecture of pywin32 wheel on Windows

[p-rogalski]

• I have searched the issue tracker and believe that this is not a duplicate.

Make sure you run commands with -v flag before pasting the output.

Steps to reproduce

1. Use following minimal pyproject.toml:

   [build-system]
   requires = ["pdm-backend"]
   build-backend = "pdm.backend"
   
   [project]
   name = "my-package"
   version = "0.0.1"
   requires-python = ">=3.10,<4.0"
   dependencies = ["pywin32>=306"]

2. Create 32 bit venv (e.g. pdm venv create --with-pip 3.12-32)

3. Create the lock file (pdm lock)

4. Install project (pdm install -v):

   Output

   STATUS: Resolving packages from lockfile...
   STATUS: Fetching hashes for resolved packages...
   unearth.preparer: The file . is a local directory, use it directly
   Synchronizing working set with resolved packages: 1 to add, 0 to update, 0 to remove
   
   unearth.preparer: Using cached <Link https://files.pythonhosted.org/packages/83/1c/25b79fc3ec99b19b0a0730cc47356f7e2959863bf9f3cd314332bddb4f68/pywin32-306-cp312-cp312-win_amd64.whl (from https://pypi.org/simple/pywin32/)>
   ✔ Install pywin32 306 successful
   Installing the project as an editable package...
   pdm.termui: Preparing environment(Isolated mode) for PEP 517 build...
   pdm.termui: Running PEP 517 backend to build a wheel for <Link file:///F:/pywin32-test (from None)>
   pdm.termui: ======== Start resolving requirements ========
   pdm.termui:   pdm-backend
   pdm.termui:   python>=3.12,<3.12.1
   pdm.termui:   Adding requirement pdm-backend
   pdm.termui:   Adding requirement python>=3.12,<3.12.1
   pdm.termui: ======== Starting round 0 ========
   pdm.termui: Pinning: python None
   pdm.termui: ======== Ending round 0 ========
   pdm.termui: ======== Starting round 1 ========
   pdm.termui: Pinning: pdm-backend 2.1.7
   pdm.termui: ======== Ending round 1 ========
   pdm.termui: ======== Starting round 2 ========
   pdm.termui: ======== Resolution Result ========
   pdm.termui: Stable pins:
   pdm.termui:        python None
   pdm.termui:   pdm-backend 2.1.7
   pdm.termui: Installing pdm-backend@2.1.7...
   unearth.preparer: Using cached <Link https://files.pythonhosted.org/packages/38/d8/0a932c1172645bebcd379ea0604a5db50b0410888fa8c5fe56b0ea12d87c/pdm_backend-2.1.7-py3-none-any.whl (from https://pypi.org/simple/pdm-backend/)>
   pdm.termui: Synchronization complete.
   pdm.termui: ======== Start resolving requirements ========
   pdm.termui:   editables
   pdm.termui:   python>=3.12,<3.12.1
   pdm.termui:   Adding requirement editables
   pdm.termui:   Adding requirement python>=3.12,<3.12.1
   pdm.termui: ======== Starting round 0 ========
   pdm.termui: Pinning: python None
   pdm.termui: ======== Ending round 0 ========
   pdm.termui: ======== Starting round 1 ========
   pdm.termui: Pinning: editables 0.5
   pdm.termui: ======== Ending round 1 ========
   pdm.termui: ======== Starting round 2 ========
   pdm.termui: ======== Resolution Result ========
   pdm.termui: Stable pins:
   pdm.termui:      python None
   pdm.termui:   editables 0.5
   pdm.termui: Installing editables@0.5...
   unearth.preparer: Using cached <Link https://files.pythonhosted.org/packages/6b/be/0f2f4a5e8adc114a02b63d92bf8edbfa24db6fc602fca83c885af2479e0e/editables-0.5-py3-none-any.whl (from https://pypi.org/simple/editables/)>
   pdm.termui: Synchronization complete.
   pdm.termui: C:\Users\P291F~1.ROG\AppData\Local\Temp\pdm-build-env-akd7_251-shared\Lib\site-packages\pdm\backend\wheel.py:226: PDMWarning: No license files are matched with glob patterns ['LICENSES/*', 'LICEN[CS]E*', 'COPYING*', 'NOTICE*', 'AUTHORS*'].
   pdm.termui:   for file in self.find_license_files():
   pdm.termui:  - Adding .pdm-build\.gitignore -> .gitignore
   pdm.termui:  - Adding .pdm-build\my_package-0.0.1+editable.dist-info\METADATA -> my_package-0.0.1+editable.dist-info/METADATA
   pdm.termui:  - Adding .pdm-build\my_package-0.0.1+editable.dist-info\WHEEL -> my_package-0.0.1+editable.dist-info/WHEEL
   pdm.termui:  - Adding .pdm-build\my_package.pth -> my_package.pth
   pdm.termui:  - Adding my_package-0.0.1+editable.dist-info\RECORD -> my_package-0.0.1+editable.dist-info/RECORD
   ✔ Install my-package 0.0.1 successful
   
   🎉 All complete!
   

5. Try to import a pywin32 module, e.g. pythoncom

Actual behavior

A 64-bit wheel of pywin32 is installed into the 32-bit venv (see pdm install -v output). This produces the following error when trying to import e.g. pythoncom:

Python 3.12.0 (tags/v3.12.0:0fb18b0, Oct  2 2023, 12:49:59) [MSC v.1935 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pythoncom
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "F:\pywin32-test\.venv\Lib\site-packages\pythoncom.py", line 2, in <module>
    import pywintypes
  File "F:\pywin32-test\.venv\Lib\site-packages\win32\lib\pywintypes.py", line 126, in <module>
    __import_pywin32_system_module__("pywintypes", globals())
  File "F:\pywin32-test\.venv\Lib\site-packages\win32\lib\pywintypes.py", line 52, in __import_pywin32_system_module__
    import _win32sysloader
ImportError: DLL load failed while importing _win32sysloader: %1 is not a valid Win32 application.

Expected behavior

A 32-bit wheel of pywin32 should be installed into the 32-bit venv.

Environment Information

# Paste the output of `pdm info && pdm info --env` below:
PDM version:
  2.10.4
Python Interpreter:
  F:\pywin32-test\.venv\Scripts\python.exe (3.12-32)
Project Root:
  F:/pywin32-test
Local Packages:
  
{
  "implementation_name": "cpython",
  "implementation_version": "3.12.0",
  "os_name": "nt",
  "platform_machine": "AMD64",
  "platform_release": "11",
  "platform_system": "Windows",
  "platform_version": "10.0.22621",
  "python_full_version": "3.12.0",
  "platform_python_implementation": "CPython",
  "python_version": "3.12",
  "sys_platform": "win32"
}