libsbml fails to build with Python 3.8.0b1.

[ 98%] Swig C# source
cd /builddir/build/BUILD/libSBML-5.18.0-Source/build/src/bindings/csharp && /usr/bin/cmake -DCUR_BIN_DIRECTORY="/builddir/build/BUILD/libSBML-5.18.0-Source/build/src/bindings/csharp" -DBIN_DIRECTORY="/builddir/build/BUILD/libSBML-5.18.0-Source/build" -DCUR_SRC_DIRECTORY="/builddir/build/BUILD/libSBML-5.18.0-Source/src/bindings/csharp" -DSRC_DIRECTORY="/builddir/build/BUILD/libSBML-5.18.0-Source" -DCMAKE_COMMAND="/usr/bin/cmake" -DPYTHON_EXECUTABLE="/usr/bin/python3" -DSWIG_SWIGDOCDEFINES="--define USE_COMP --define USE_FBC --define USE_GROUPS --define USE_L3V2EXTENDEDMATH --define USE_LAYOUT --define USE_MULTI --define USE_QUAL --define USE_RENDER --define USE_COMP --define USE_FBC --define USE_GROUPS --define USE_L3V2EXTENDEDMATH --define USE_MULTI --define USE_QUAL --define USE_RESwig: C# Bindings
Creating /builddir/build/BUILD/libSBML-5.18.0-Source/build/src/bindings/csharp/csharp-files
Creating: libsbmlcsP.dll
csharp-files/ListOfLocalRenderInformation.cs(14,10): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/ListOfLocalRenderInformation.cs(16,40): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/ListOfLocalRenderInformation.cs(22,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/ListOfLocalRenderInformation.cs(27,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/ListOfLocalStyles.cs(14,10): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/ListOfLocalStyles.cs(16,29): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/ListOfLocalStyles.cs(22,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/ListOfLocalStyles.cs(27,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/StringSet.cs(14,10): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/StringSet.cs(17,21): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/StringSet.cs(23,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/StringSet.cs(28,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/double_array.cs(14,10): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/double_array.cs(17,24): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/double_array.cs(23,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/double_array.cs(28,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/int_array.cs(14,10): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/int_array.cs(17,21): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/int_array.cs(23,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/int_array.cs(28,18): error CS0246: The type or namespace name `HandleRef' could not be found. Are you missing `System.Runtime.InteropServices' using directive?
csharp-files/libsbml.cs(16,48): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/libsbml.cs(65,54): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/libsbml.cs(134,52): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/libsbml.cs(182,48): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/libsbml.cs(199,36): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
csharp-files/libsbml.cs(389,52): error CS0246: The type or namespace name `IntPtr' could not be found. Are you missing `System' using directive?
CMake Error at /builddir/build/BUILD/libSBML-5.18.0-Source/src/bindings/csharp/compile-native-files.cmake:101 (message):
  Could not create the managed library

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.8/fedora-rawhide-x86_64/00940603-libsbml/

For all our attempts to build libsbml with Python 3.8, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.8/package/libsbml/

Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.8:
https://copr.fedorainfracloud.org/coprs/g/python/python3.8/

Let us know here if you have any questions.