I'm working on a plugin, and would like to be able to tell if it's GHC or GHCi that's running.

I tried:

df <- getDynFlags

let isGHCi = ghcMode df == CompManager

Alas, while that correctly tells apart "ghci" from "ghc -c", it also returns True when ghc is called without the "-c" argument.

Is there a better/more robust way of figuring out whether we're in an interactive session?

-Levent.