Comment 3 for bug 1563573

I just looked at other projects that install cmake bits, and the two locations common between them are those:

$ dpkg -S /usr/lib/cmake
libjsoncpp-dev:amd64: /usr/lib/cmake

$ dpkg -S /usr/lib/x86_64-linux-gnu/cmake/Qt5
qtbase5-dev:amd64: /usr/lib/x86_64-linux-gnu/cmake/Qt5

While nothing else than cmake itself and cmake-extras installs in the versioned directory:

$ dpkg -S /usr/share/cmake-3.5
cmake-data, cmake-extras: /usr/share/cmake-3.5

By "not backwards compatible", what do you mean? I don't think we need to be compatible further back than... our current cmake TBH.