🔧 use separate build directories per Python version

Signed-off-by: burgholzer <burgholzer@me.com>

Author: burgholzer

noxfile.py

@@ -54,7 +54,7 @@ def _run_tests(
     posargs = list(session.posargs)
     env = {}
     if os.environ.get("CI", None) and sys.platform == "win32":
-        env["SKBUILD_CMAKE_ARGS"] = "-T ClangCL;--fresh"
+        env["SKBUILD_CMAKE_ARGS"] = "-T ClangCL"
 
     if shutil.which("cmake") is None and shutil.which("cmake3") is None:
         session.install("cmake")

pyproject.toml

@@ -85,14 +85,14 @@ minimum-version = "build-system.requires"
 # Set the wheel install directory
 wheel.install-dir = "mqt/ddsim"
 
+# Explicitly set the package directory
+wheel.packages = ["src/mqt"]
+
 # Set required Ninja version
 ninja.version = ">=1.10"
 
 # Setuptools-style build caching in a local directory
-build-dir = "build/{build_type}"
-
-# Explicitly set the package directory
-wheel.packages = ["src/mqt"]
+build-dir = "build/{wheel_tag}/{build_type}"
 
 # Only build the Python bindings target
 build.targets = ["pyddsim"]
@@ -301,7 +301,7 @@ environment = { MACOSX_DEPLOYMENT_TARGET = "10.15" }
 [tool.cibuildwheel.windows]
 before-build = "pip install delvewheel>=1.7.3"
 repair-wheel-command = "delvewheel repair -v -w {dest_dir} {wheel} --namespace-pkg mqt"
-environment = { CMAKE_ARGS = "-T ClangCL", SKBUILD_CMAKE_ARGS="--fresh" }
+environment = { CMAKE_ARGS = "-T ClangCL" }
 
 [[tool.cibuildwheel.overrides]]
 select = "*-macosx_arm64"