How did you get OpenSSL Build to use MSVC with NASM?

[andrewkatson]

I am working on OpenSSL for bzlmod on Windows in raccoons-build/bazel-openssl-cc#5 but I get a curious issue on Windows x86_64 where OpenSSL supports MSVC with nasm but Bazel by default uses masm with MSVC. I see in your BUILD example for OpenSSL you are able to get MSVC to use nasm and unset the masm flags. Can you point me to the code where you explicitly setup MSVC with nasm?