Can you give more info about the problems the gem is having?
Coolline assumes your terminal supports ANSI codes (for clearing a line, using colors, moving the cursor, …), instead of using a library like ncurses, which is able to deal with many terminals (but sometimes feels like a curse to use). So, it doesn't fully support a wide range of terminals like it would using ncurses.
@autodidakto the 'up arrow' key wasn't working for a number of people, this made it impossible for them to access repl history and made using pry a frustrating experience
@autodidakto this gem has been fixed and is back up, let me know if it works for you!
I just installed it and now every command in pry gives me a zero division error:
 pry(main)> "hi"
ZeroDivisionError: divided by 0
from /Users/auto/Homebrew/Cellar/ruby/1.9.3-p125/lib/ruby/gems/1.9.1/gems/pry-0.9.8.3/lib/pry/indent.rb:197:in `/'
That's because of Pry's correct_indent setting which relies on Readline to get terminal size, but that doesn't work since Readline hasn't been initialized. As a temporary solution, you can just set Pry.config.correct_indent to false.