CAcert's certificates were recently removed from Debian's ca-certificates
package. This repo lets you build a Debian package with the CAcert certficates
that is comaptible to the ca-certificates infrastructure.
This is based on the skeleton from ca-certificates which can be found in
/usr/share/doc/ca-certificates/examples/ca-certificates-local on your system.
debhelper
$ dpkg-buildpackage
Install the package and add the new certificates by running
$ dpkg-reconfigure ca-certificates