Now it might work; my hope.
In the latest error message from github action, I see this:
g++.exe -std=gnu++11 -pipe -mthreads -fmessage-length=0 -fexceptions -DBUILDING_PLUGIN -DHAVE_W32API_H -D__WXMSW__ -DWXUSINGDLL -DcbDEBUG -DNOPCH -DwxUSE_UNICODE -DBOOST_SYSTEM_NO_DEPRECATED -I..\..\..\include -I..\..\..\include\tinyxml -I..\..\..\sdk\wxscintilla\include -ID:/msys64/opt/wxwidgets3.2/include -ID:/msys64/opt/wxwidgets3.2/lib\gcc_dll\mswu -ID:/msys64/opt/boost_1_86_0/boost -c CParser.cpp -o ..\\..\\..\\.objs32\\plugins\\contrib\\NassiShneiderman\\CParser.o
CParser.cpp:5:10: fatal error: boost/spirit/include/classic.hpp: No such file or directory
5 | #include <boost/spirit/include/classic.hpp>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
mingw32-make[1]: *** [NassiShneiderman_wx32.cbp.mak:108: ..\\..\\..\\.objs32\\plugins\\contrib\\NassiShneiderman\\CParser.o] Error 1
mingw32-make[1]: Leaving directory 'D:/a/winstyle-codeblocks-bins/winstyle-codeblocks-bins/codeblocks_sfmirror/src/plugins/contrib/NassiShneiderman'
mingw32-make: *** [Makefile_plugins:40: plugins_contrib_nassishneiderman_nassishneiderman_wx32] Error 2
Error: Process completed with exit code 2.
You have already installed the header files from the boost library?
Maybe you need to tweak the compiler search paths of the boost, as I can see that this search path is already included.
D:/msys64/opt/boost_1_86_0/
So, do you have a folder named below?
D:/msys64/opt/boost_1_86_0/boost/spirit/include/classic.hpp
Maybe, as a workaround, you can exclude this plugin from the workspace to makefile generation.