Installing curses gem

Since Ruby 2.1, curses was removed from Ruby standard library. 😟 If you have trouble installing curses gem, follow the instructions below.

Arch Linux

pacman -S base-devel
gem install curses

MSYS2 (Windows)

pacman -S base-devel gcc gmp-devel libcrypt-devel ncurses-devel
gem install curses

DevKit (Windows)

1. Download ncurses Windows port. [x86]
2. Unzip to anywhere, for example C:\ncurses.
3. Run gem install curses --platform=ruby -- --with-ncurses-dir="C:\ncurses" (Replace C:\ncurses with wherever you extracted it).
4. Now when we require 'curses' we get The specified module could not be found. Opening up curses.so in a disassembler we see libncursesw6.dll is loaded.
5. To fix this copy the contents of C:\ncurses\bin to somewhere in your path.
6. Done!