graphicsmagick-imagemagick-compat 1.4+really1.3.39-2 (amd64 binary) in ubuntu lunar

 GraphicsMagick provides a set of command-line applications to manipulate
 image files. It is a fork of the ImageMagick project and therefore offers
 a similar set of features, but puts a larger emphasis on stability.
 .
 With this package installed, the GraphicsMagick command line tools can
 be executed like their ImageMagick counterparts. It allows one to migrate
 scripts from ImageMagick to GraphicsMagick without any code changes.