Simon Marlow wrote:
Peter Hercek wrote:
Is it possible to run ghci monad actions from ghci command line somehow?
For example: I would like to check whether "it" variable is of type Bool and whether it is True using normal Haskell code (i.e. not using ghci commands starting with colon like :type :print).
There's no way to do that right now, although you can play tricks with :define to pipe the output of GHCi commands into Haskell code. Look up Claus Reinke's example macros - they're on one of the wikis somewhere, but I don't seem to be able to find them with Google right now. Yes, I know about Claus' tutorial, it was great and I already use his techniques a lot. I even did a small change to ghc source code to try out some stuff for easier debugging. I'm hoping to post about my experience here (maybe in a week or two).
What I was searching for in this post was a possibility to write full fledged plugins or something like that. Never mind, I already went through the initial pain of my custom change to ghc so if I ever need something more complicated again I can do my tests directly in the source code. Thanks, Peter.