pdm install skipping GDAL installation from whl (but pip install -e . works)

[LucRSquared]

Hello, I am experimenting with pdm as a tool to package my libraries. I'm experimenting with installing GDAL for a project that needs to work on both Windows and Linux platforms. I created a small test package called progdal and the pyproject.toml file is:

[tool.pdm]

[tool.pdm.dev-dependencies]
dev = [
    "nbformat>=5.8.0",
    "ipykernel>=6.22.0",
]
[project]
name = "progdal"
version = "0.1.0"
description = ""
authors = [
    {name = "Luc Rébillout", email = "[email protected]"},
]
dependencies = [
    "gdal @ https://download.lfd.uci.edu/pythonlibs/archived/GDAL-3.4.3-cp311-cp311-win_amd64.whl ; sys_platform=='win32'",
    "gdal @ https://github.com/girder/large_image_wheels/raw/wheelhouse/GDAL-3.4.3-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl#sha256=6b98d9c0b17b99ceffe351de9d936facdc85991a9209f89e8b3add34dca495fa ; sys_platform=='linux'",
]
requires-python = ">=3.9"
readme = "README.md"
license = {text = "MIT"}

[build-system]
requires = ["pdm-backend"]
build-backend = "pdm.backend"

My directory structure is as follow:

.
└── progdal
    ├── progdal
    │   ├── __init__.py (contains: from . import hello)
    │   └── hello.py (contains: from osgeo import gdal)
    ├── tests
    │   └── test_gdal.py (contains: import progdal)
    └── pyproject.toml

At this point I run pdm install and it finishes successfully. pdm also created a .venv folder at the root of the directory. And I run pdm run tests/test_gdal.py And get the following error:

Traceback (most recent call last):
  File "C:\Users\Luc\projects\progdal\tests\test_gdal.py", line 1, in <module>
    import progdal
  File "C:\Users\Luc\projects\progdal\progdal\__init__.py", line 1, in <module>
    from . import hello
  File "C:\Users\Luc\projects\progdal\progdal\hello.py", line 1, in <module>
    from osgeo import gdal
ModuleNotFoundError: No module named 'osgeo'

Any ideas why that is so? A possible clue could be in the pdm.lock file where the gdal package lists the linux url while I am running this on a windows machine?

[[package]]
name = "gdal"
version = "3.4.3"
url = "https://github.com/girder/large_image_wheels/raw/wheelhouse/GDAL-3.4.3-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl#sha256=6b98d9c0b17b99ceffe351de9d936facdc85991a9209f89e8b3add34dca495fa"
summary = "GDAL: Geospatial Data Abstraction Library"

However, if I manually activate the virtual environment and run pip install -e . the package installs successfully and from osgeo import gdal works fine on my Windows machine.

Your input is greatly appreciated!

EDIT:
I found out that if I delete the Linux line from the pyproject.toml file the installation goes well:

dependencies = [
    "gdal @ https://download.lfd.uci.edu/pythonlibs/archived/GDAL-3.4.3-cp311-cp311-win_amd64.whl ; sys_platform=='win32'",
]

Which means I misunderstood how to write platform dependent dependencies with pdm, any idea how to do that?