Code review comment for lp:~nick-dedekind/qtmir/persistent_surface_id

> /home/dandrader/qtmir/persistent_surface_id/src/platforms/mirserver/screen.cpp
> :218:59: error: 'const Width {aka const class
> mir::geometry::detail::IntWrapper<mir::geometry::WidthTag>}' has no member
> named 'as_float'
> /home/dandrader/qtmir/persistent_surface_id/src/platforms/mirserver/screen.cpp
> :219:61: error: 'const Height {aka const class
> mir::geometry::detail::IntWrapper<mir::geometry::HeightTag>}' has no member
> named 'as_float'
>
> /home/dandrader/qtmir/persistent_surface_id/tests/framework/qtmir_test.cpp:168
> :92: required from here
> /usr/include/c++/5/ext/new_allocator.h:120:4: error: invalid new-expression of
> abstract class type 'mir::scene::MockSession'
>
> Getting some build failures. Maybe it needs to have some "mir-0.23
> compatibility branch" as prereq...

You building against trunk (aka 0.24)?