Just this morning postgresql-9.3-postgis-2.1 failed to install on debian wheezy. And I received the following error:
The following packages have unmet dependencies: postgresql-9.3-postgis-2.1 : Depends: liblwgeom-2.1.4 (>= 2.1.2) but it is not going to be installed Recommends: postgis but it is not going to be installed
On some investigation I noticed postgis updated the liblwgeom dependency to liblwgeom-2.1.4. Folks over at the postgis irc channel suggested that maybe not all dependencies are shipping with postgresql-9.3-postgis-2.1 package.