This are listing expect alternatives: https://en.wikipedia.org/wiki/Expect  Btw, it's easy to be done in Python.

Also my IMHO that better is to pass extension directives not in command line (it will be big) but in custom .ghci file with option "-ghci-script".

You should be able to run something like this:

echo 'putStrLn "hi"' | stack exec -- ghci -XOverloadedStrings

On Fri, Aug 24, 2018 at 8:21 AM, Paum B. <fraybauhaus@gmail.com> wrote:

Actually, I dont know if I have asked good question to what I need.

So, I would like to run the process:

stack ghc -- --interactive -XOverloadedStrings

and then, somehow from 'outside' push string commands to it...

On Fri, Aug 24, 2018 at 2:08 PM Paum B. <fraybauhaus@gmail.com> wrote:

oh, thats good - thank you!

is there any example in bash?

thnx

On Fri, Aug 24, 2018 at 2:02 PM Paul <aquagnu@gmail.com> wrote:

Sure. I remember old days Tcl/Tk utility "expect" for such interactive scripting sessions. Open a pipes and communicate with process :) Today there are tools similar to "expect" for scripting command line utilities.

Also Emacs works with GHCi (interro) in such way. Also Dante IMHO. Visual Studio Code Haskelly and Haskerro, etc..

24.08.2018 14:58, Paum B. wrote:

Hi List,

It is possibile to run:

stack ghc -- --interactive -XOverloadedStrings

and then send to it strings (commands) externally?

Thanks

paum

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