Move commands to download Intel OpenMP into GitHub Action, and use old commands rather than new ones. Also remove DOpenMP_ROOT Windows envvar from pyproject

Author: ar4

.github/workflows/build.yml

@@ -28,6 +28,11 @@ jobs:
             export CUDACXX=/usr/local/cuda-11.8/bin/nvcc
           # For Windows, install CUDA
           CIBW_BEFORE_ALL_WINDOWS: |
+            cd src/deepwave
+            nuget install intelopenmp.devel.win -DirectDownload -NonInteractive
+            nuget install intelopenmp.redist.win -DirectDownload -NonInteractive
+            cp intelopenmp.devel.win*/build/native/win-x64/libiomp5md.lib .
+            cp intelopenmp.redist.win*/runtimes/win-x64/native/libiomp5md.dll .
             curl https://developer.download.nvidia.com/compute/cuda/12.4.0/network_installers/cuda_12.4.0_windows_network.exe -o cuda_12.4.0_windows_network.exe
             chmod +x ./cuda_12.4.0_windows_network.exe
             ./cuda_12.4.0_windows_network.exe -s nvcc_12.4 cudart_12.4

pyproject.toml

@@ -54,13 +54,6 @@ repair-wheel-command = "auditwheel repair -w {dest_dir} {wheel} --exclude libcud
 
 [tool.cibuildwheel.windows]
 test-command = "pytest {project}/tests/test_scalar.py"
-before-build = [
-    "nuget install intelopenmp.devel.win -Version 2018.0.0 -DirectDownload -NonInteractive",
-    "nuget install intelopenmp.redist.win -Version 2018.0.0 -DirectDownload -NonInteractive",
-    "xcopy .\\intelopenmp.redist.win.2018.0.0\\runtimes\\win-x64\\native\\libiomp5md.dll src\\deepwave\\ /Y",
-    "xcopy .\\intelopenmp.devel.win.2018.0.0\\build\\native\\lib\\x64\\libiomp5md.lib src\\deepwave\\ /Y",
-]
-environment = { CMAKE_ARGS = "-DOpenMP_ROOT={project}/intelopenmp.devel.win.2018.0.0" }
 
 [tool.cibuildwheel.macos]
 test-command = "pytest {project}/tests/test_scalar.py"