projecthydra/hydra-derivatives — pull request #8 by jeremyf (2013-09-06 14:27:58+00:00)
Title: Replacing rmagick with mini_magick

I am extremely biased against Rmagick. It is a memory hog and I have
always found it painful to install.
See https://github.com/minimagick/minimagick#why

MiniMagick instead spawns ImageMagick command line commands which use
significantly less memory.
See https://github.com/minimagick/minimagick#solution