Improve clarification about clash of current and legacy build specs
@@ -699,7 +699,8 @@ the ``apt_packages`` key described above.
.. warning::
- The keys ``build.os`` and ``python.version`` cannot be used at the same time.
+ When using the new speficiation,
+ the ``build.os`` and ``python.version`` options cannot be used.
Doing so will error the build.
build (legacy)
