Set CXX version in activation script?

[h-vetinari]

I was coming to this from the POV of how conda-forge/clang-compiler-activation-feedstock#17 applies to windows.

Should we be adding flags for C++17 (or lower?) here and/or in https://github.com/conda-forge/clang-win-activation-feedstock?

Obviously I'd value using the same version as linux/osx, as it makes it easier to do things uniformly like in conda-forge/abseil-cpp-feedstock#28, especially if a patch to upstream is needed.

[jakirkham]

At least with macOS and Linux, we dropped these flags ( conda-forge/clang-compiler-activation-feedstock#75 ) to leave it up to recipes. Not sure whether this is the right approach for Windows

[h-vetinari]

Ah, thanks John. That conclusion was not evident to me from the discussion in conda-forge/clang-compiler-activation-feedstock#17.