Preventing "Dirty" Checkins

[Ones Self]

Hi,

I'm running a CVS server which compiles and tests the current
files in CVS every hour.  I would like to make new checkins
available _only_ if they compile and pass the tests.

So, if a user checks in something which does not compile, for
example, other users who check out at that time will not get
the new version until the problem is fixed.  Everytime you
do an update, you know you're getting a clean version of the
source; one that compiles, and in which the tests pass.

Thanks