To use this package in a normal conda environment, do the following

export CONDABUILDWINSDK=/opt

To use this package in a conda-build environment, add the following

CONDABUILDWINSDK: - "/opt"

in $HOME/condabuildconfig.yaml and use clang_win-64 as the compiler.

By setting this variable, you are agreeing to the terms and conditions of the Windows SDK and the MSVC headers. If the Windows SDK and MSVC headers are not inside CONDABUILDWINSDK, they would be automatically downloaded.