component/inkscape: use gcc-10.5 explicitly for python2, where we use gcc-8.5 for old scikit-learn.

component/inkscape/buildout.cfg

@@ -8,6 +8,7 @@ extends =
   ../freetype/buildout.cfg
   ../garbage-collector/buildout.cfg
   ../gettext/buildout.cfg
+  ../gcc/buildout.cfg
   ../glibmm/buildout.cfg
   ../gtk/buildout.cfg
   ../gtkmm/buildout.cfg
@@ -71,3 +72,8 @@ environment =
   CMAKE_INCLUDE_PATH=${boost-lib:location}/include:${double-conversion:location}/include:${freetype:location}/include:${garbage-collector:location}/include:${libjpeg:location}/include:${lcms2:location}/include:${libpng:location}/include:${zlib:location}/include
   CMAKE_LIBRARY_PATH=${boost-lib:location}/lib:${double-conversion:location}/lib:${freetype:location}/lib:${garbage-collector:location}/lib:${lcms2:location}/lib:${libjpeg:location}/lib:${libpng:location}/lib:${zlib:location}/lib
   LDFLAGS=-Wl,-rpath=${atk:location}/lib -Wl,-rpath=${atkmm:location}/lib -L${boost-lib:location}/lib -Wl,-rpath=${boost-lib:location}/lib -L${bzip2:location}/lib -Wl,-rpath=${bzip2:location}/lib -Wl,-rpath=${cairo:location}/lib -Wl,-rpath=${cairomm:location}/lib -Wl,-rpath=${double-conversion:location}/lib -Wl,-rpath=${fontconfig:location}/lib -Wl,-rpath=${freetype:location}/lib -L${garbage-collector:location}/lib -Wl,-rpath=${garbage-collector:location}/lib -Wl,-rpath=${gdk-pixbuf:location}/lib -L${gettext:location}/lib -Wl,-rpath=${gettext:location}/lib -Wl,-rpath=${glib:location}/lib -Wl,-rpath=${glibmm:location}/lib -L${gsl:location}/lib -Wl,-rpath=${gsl:location}/lib -Wl,-rpath=${gtk-3:location}/lib -Wl,-rpath=${gtkmm:location}/lib -Wl,-rpath=${harfbuzz:location}/lib -Wl,-rpath=${potrace:location}/lib -Wl,-rpath=${lcms2:location}/lib -Wl,-rpath=${libX11:location}/lib -Wl,-rpath=${libXext:location}/lib -Wl,-rpath=${libepoxy:location}/lib -Wl,-rpath=${libjpeg:location}/lib -Wl,-rpath=${libpng:location}/lib -L${libsigc:location}/lib -Wl,-rpath=${libsigc:location}/lib -Wl,-rpath=${libsoup:location}/lib -Wl,-rpath=${libxml2:location}/lib -L${libxslt:location}/lib -Wl,-rpath=${libxslt:location}/lib -Wl,-rpath=${pango:location}/lib -Wl,-rpath=${pangomm:location}/lib -L${popt:location}/lib -Wl,-rpath=${popt:location}/lib -Wl,-rpath=${potrace:location}/lib -Wl,-rpath=${zlib:location}/lib
+
+[inkscape:python2]
+environment +=
+  CC=${gcc-10.5:location}/bin/gcc
+  CXX=${gcc-10.5:location}/bin/g++