Fix attrdict issue when building wxPython>=4.2.0

When building wxPython, the "attrdict" package is needed, but is
now incompatible with Python > 3.10, due to the "collections" package.
The workaround is to ship a patched version of "attrdict" along with
msspec since "attrdict" isn't developped anylonger.

Makefile

@@ -1,7 +1,7 @@
 include src/options.mk
 
 
-.PHONY: pybinding install devel venv doc clean
+.PHONY: pybinding install devel venv doc clean _attrdict
 
 
 pybinding:
@@ -37,20 +37,28 @@ light: venv
 	@$(INSIDE_VENV) pip install src/
 
 
-_build_wx/wxPython.target:
+_attrdict:
+	# Check if virtualenv python version > 3.3.0
+	# If so, install the patched version of attrdict used to build the version 4.2.0 of wxPython
+	@$(INSIDE_VENV) if `python -c "import sys; exit(sys.version_info > (3,3))"`; then \
+		pip install --no-cache attrdict; \
+	else \
+		pip install thirdparty/attrdict-2.0.1.tar.gz; \
+	fi
+
+
+_build_wx/wxPython.target: _attrdict
 	@$(INSIDE_VENV) echo "Building wxPython for your `python --version 2>&1` under Linux $(DISTRO_RELEASE)..."
 	# Create a folder to build wx into
 	@mkdir -p _build_wx
-	@$(INSIDE_VENV) pip install attrdict sip
-	# TODO: attrdict is no longer compatible with collections package. The build will fail
 	# download the wheel or the source if it cannot find a wheel
-	@$(INSIDE_VENV) cd _build_wx && pip download -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/$(DISTRO_RELEASE) wxPython
+	$(INSIDE_VENV) cd _build_wx && pip download -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/$(DISTRO_RELEASE) wxPython
 	# Build the source if a tar.gz was downloaded
 	@$(INSIDE_VENV) cd _build_wx && \
           if [ -e wxPython*.tar.gz ]; then \
             tar -x --skip-old-files -vzf wxPython*.tar.gz; \
             cd `ls -d wxPython*/`; \
-            pip install requests; \
+            pip install requests sip; \
             python build.py dox etg --nodoc sip build bdist_wheel; \
             ln -sf `readlink -f dist/wxPython*.whl` ../; \
           fi;