Today I run dnf upgrade and I get this message:
============================================================================ Package Arch Version Repository Size ============================================================================ Upgrading: libgit2 x86_64 0.27.4-1.module_2222+9bfbc8d7 fedora-modular 412 k Enabling module streams: libgit2 0.27
In Fedora 29, everybody has modular repositories available, but I never enabled any module. What is happening?
After an investigation, I found that libgit2 maintainer stopped maintaining the package
in main Fedora and moved completely to Fedora. Such modules are called default streams
and dnf will silently enable it for you. See Managing module defaults for more information.
Those defaults can be changed in the next version of Fedora and dnf will automatically switch
to next default stream for the next Fedora. You can see the source of default stream for relengs or you can run dnf module list which print something like:
Fedora Modular 29 - x86_64 Name Stream Profiles Summary libgit2 0.26 Library implementation of Git libgit2 0.27 [d] Library implementation of Git
The [d] in Stream column indicates that this stream is the default and can be silently enabled.