media-libs/lcms:0 is unmaintained, has seen no releases since 2009, and (according to upstream) is affected by unspecified serious security issues. Please * either upgrade your package to use media-libs/lcms:2, * or hard-disable an optional dependency on media-libs/lcms:0, * or mask your package for removal. Thank you!
Upstream has lcms:2 support in a new version that was in fact released just recently :) I added 1.2 to tree and disabled lcms support in older versions (including stable which is quite old, 1.2 will be stabled after the usual month)