The package that contains the exclude dependency cannot be installed if the dependent package is installed in the image at the specified version level or greater.
If the version is omitted from the FMRI of an exclude dependency, then no version of the excluded package can be installed concurrently with the package specifying the dependency.
The exclude dependency is seldom used. These constraints can be frustrating to administrators, and should be avoided where possible.
An example exclude dependency is:
depend fmri=pkg:/x11/server/xorg@1.10.99 type=exclude