It's usually code compiled with Mingw that gets AV false-positives in Nim. But, indeed, you can use clang or zigcc compilers instead.
Nim has good support for Clang, so it works by just switching a single flag: `nim c --cc:clang main.nim`
For zigcc - there is a wrapper package you can install with nimble: `nimble install zigcc`
Then you can use it with: `nim c --cc:clang --clang.exe=zigcc --linker.exe=zigcc main.nim`
Of course, you can save the flags in configuration files. You can look at my setup for inspiration [0].
[0] - https://codeberg.org/janAkali/grabnim/src/branch/master/conf...