interaction of OsPath with getEnv, GetOpt, optparse-applicative

[amigalemming]

Can you please clarify, how to transfer FilePaths from getEnv, GetOpt, optparse-applicative without the roundtrip via String?

[hasufell]

All those things need to be reimplemented: pcapriotti/optparse-applicative#65 (comment)

[hasufell]

For getEnv we need:

• https://hackage.haskell.org/package/unix-2.8.5.0/docs/System-Posix-Env.html#v:getEnv
• https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-getenvironmentvariable

But the latter doesn't exist in Win32 yet... so it has to be added there (probably along with GetEnvironmentStrings)