Build .NET 4.6 support conditionally

filmor · filmor · commit 92e5912de299 · 2026-05-05T17:49:54.000+02:00
diff --git a/MANIFEST.in b/MANIFEST.in
@@ -1,6 +1,7 @@
 graft src/runtime
 prune src/runtime/obj
 prune src/runtime/bin
+graft src/compat
 include src/pythonnet.snk
 include Directory.Build.*
 include pythonnet.sln
diff --git a/doc/source/python.rst b/doc/source/python.rst
@@ -45,7 +45,8 @@ Mono (``mono``)
 
 .NET Framework (``netfx``)
     Default on Windows and also only supported there. Must be at least version
-    4.6.1, with 4.7.2 or later recommended.
+    4.6.1, with 4.7.2 or later recommended. For .NET 4.6 support, the wheel has
+    to be built with the environment variable `PYTHONNET_BUILD_NET46_SUPPORT=1`.
 
 .NET Core (``coreclr``)
     Self-contained is not supported, must be at least version 3.1.
diff --git a/setup.py b/setup.py
@@ -124,13 +124,13 @@ def finalize_options(self):
     "bdist_wheel": bdist_wheel,
 }
 
-dotnet_libs = [
-    DotnetLib(
-        "python-runtime",
-        "src/compat/Python.Runtime.Compat.csproj",
-        output="pythonnet/runtime",
-    )
-]
+
+if os.getenv("PYTHONNET_BUILD_NET46_SUPPORT"):
+    csproj = "src/compat/Python.Runtime.Compat.csproj"
+else:
+    csproj = "src/runtime/Python.Runtime.csproj"
+
+dotnet_libs = [DotnetLib("python-runtime", csproj, output="pythonnet/runtime")]
 
 setup(
     cmdclass=cmdclass,
