Hi Ricardo,

I think I am done with basic changes for 4th task. File is attached. As
mentioned in IRC output is in escape code sequence when I tried in REPL.

> I am done with 2nd task out of given 4 tasks and that was included in my
> previous patch.
> I am currently working on 4th task. 
I am able to filter lines.
I am trying out  to*only* filter lines when “guix package” is used but
not when “guix build” by adding other port.


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Thanks!!
Sahithi