gentoo-haskell/gentoo-haskell — pull request #194 by mjorlitzky (2012-12-06 18:31:55+00:00)
Title: New package: dev-haskell/chart-gtk.

This complements dev-haskell/chart, which is already in the overlay. The simple example from the docs at,

http://dockerz.net/twd/HaskellCharts

uses it.