On the default Debian repository the Zoneminder package available is the version 1.26, however the last version is 1.29 (with a functionality I need).
Following the advise on Zoneminder 1.29 I added the repository (*)
deb http://http.debian.net/debian jessie-backports main
then I confirmed that the last version is available:
$ apt-cache policy zoneminder
zoneminder:
Installed: (none)
Candidate: 1.26.5-3.1+rpi1+b12
Version table:
1.29.0+dfsg-1~bpo8+1 0
100 http://http.debian.net/debian/ jessie-backports/main armhf Packages
1.26.5-3.1+rpi1+b12 0
500 http://mirrordirector.raspbian.org/raspbian/ jessie/main armhf Packages
however, the 'Candidate' is version '1.26.5'. I can force the new version installation with
apt-get install zoneminder=1.29.0*
but doing so, Zoneminder fail to start.
How does app-get determine the Candidate, I this case, not the last version?
(*) GPG keys will be required