Full install of latest, it's mayhem:
https://www.haskell.org/platform/
From command prompt, Run 'cabal update' (install puts it on the path) - then run it again (access denied - EXE now in quarantine).
"Potentially malicious applications blocked (Advanced Threat defense) - (Haskell Platform\Cabal.exe), powershell.exe v1 and cohost.exe declared to be "Malware" and put in quartine, as are json files cabal update put in c:\users\me\appdata\local\roaming\cabal\packages\hackage.haskell.org\
Putting all those EXEs (or the installed haskell dir) into exclusion list doesn't get me out of this. I figure Cabal is following some behavioral pattern that identifies it as a virus (communicating out through other OS tools).
Thoughts on how to exclude this case?