YUM 4: The YUM tool is based on DNF technology. As of today, it has been updated to version 4 and is being released in beta for the CentOS Linux 7 – x86_64 distribution. The limited testing that has already been done on the new version does not indicate any major issues.
However, the application's developers made it available for testing, to discover whether it can work without problems on existing YUM 3 installations.
YUM 4 provides significant improvements, such as faster dependency resolution and a stable, well- documented API. The developers say they have made every effort to maintain the functionality of YUM 3 and improve it.
The yum 4 functionality for new installation, removal, and update is identical to that of yum 4. However, there are changes, such as some yum utility additions, available from `dnf-plugins-core`.
Some of the options in the yum CLI changed, and some of them work automatically.
“I found an error, what should I do?”
Report any bugs you find in Red Hat Bugzilla under the Fedora/dnf component (be sure to mention the versions of packages and CentOS you are using).
Installation
# yum install centos-release-yum4# yum --enablerepo=centos-yum4-testing install yum4# yum4 --enablerepo=centos-yum4-testing install dnf-plugins-core
“I was using DNF from EPEL, what can I do?”
Similar to the installation above: enable the repository and update it. YUM 4 is based on a newer version of DNF and should be updated properly.
# yum install centos-release-yum4# yum --enablerepo=centos-yum4-testing update
NOTE: packages in testing repositories are not signed.
