When you try to compile postgis with a <sci-libs/proj-4.5.0 the configure stage fails with a message that it needs >=proj-4.5.0. Postgis compiles fine when proj-4.5.0 is installed. Just a simple dependancy bump in the ebuild.
+ 20 Sep 2009; Patrick Lauer <patrick@gentoo.org> postgis-1.4.0.ebuild: + Fixing deps, closes #285780 Oh sorry, I knew I had forgotten something!