What is a package manager?

• Something like a command line app-store (backend)
• It installs, upgrades and removes packages, handles metadata, resolves dependencies…)
• Examples: DNF, microdnf, Zypper, APT, PACMAN

What is a package manager?

GUI user

CLI user

Software Center

PackageKit

High Level Manager

DNF, APT, pacman

Low Level Manager

RPM, dpkg

libdnf5

• Complete restructure of API ➜ safer and unified
• Repositories are downloaded and loaded at the same time
• Filelists metadata not downloaded by default
• Faster in general
• SWIG bindings for: Python, Perl, Ruby, Go

DNF5 (CLI)

• Python is not required
• Commands are mostly the same
• Outputs of commands did change
• DNF CI tests are the same for DNF5

DNF5 daemon

• Accessible by D-Bus
• Same functionality as dnf5

List of additional DNF5 improvements:

• Configurable aliases
• Fully integrated Modularity in LIBDNF5 workflows
• Single configuration for LIBDNF5 users
• Separation of system state from history DB and module state
• Autocomplete built in
• ...

Community

The Upstream: rpm-software-management/dnf5

How do we plan to work closer with the community?

• Looking at the past of the projects
• Looking at the future of our contributors
• Our action items

Looking at the past of the projects

Looking at the past of the projects

Very few people are doing all the work

How the efforts are shifting from 2022

LIBDNF (2012-today)

DNF5 (2020-tomorrow?)

DNF (2012-today)

Where do we want to go? Looking at the future of our contributors

Where do we want to go? Looking at the future of our contributors

DNF Weekly Contribuitons

DNF5 Weekly Contributions

LIBDNF Weekly Contributions

Action Items: transparent workflow...

• Issues: triaged weekly, divided in milestones
• Discussions: opinions, announcements, questions
• Bugzilla: bug tracking, downstream requests

Discussions

Community opinions

Announcements

Questions from the community

...in addition

• Documentation: generated from codebase, tested, includes code templates and tutorials
• Contributing guides: first time issues

So, who is the community?

• People who create issues, add code, take part in discussions
• People who raise questions, use dnf5
• People who help, ask for help

DEMO

API DEMO 1

                                                
import libdnf5 as dnf

base = dnf.base.Base()
base.setup()

for release in ['35', '36', '37']:
    base.get_vars().set('releasever', release)

    sack = base.get_repo_sack()
    sack.create_repos_from_system_configuration()
    sack.update_and_load_enabled_repos(False)

    query = dnf.rpm.PackageQuery(base)
    query.filter_name(["kernel"])
    query.filter_latest_evr()

    found = next(iter(query), None)
    pkg_name = found.get_nevra() if found else "N/A"
    print(f'{release}: {pkg_name}')
                                                
                                            

API DEMO 2

                                                
import libdnf5 as dnf

base = dnf.base.Base()
base.setup()

sack = base.get_repo_sack()
sack.create_repos_from_system_configuration()
sack.update_and_load_enabled_repos(False)

goal = dnf.base.Goal(base)
goal.add_rpm_install("zlib")
ts = goal.resolve()

downloader = dnf.repo.PackageDownloader()
for pkg in ts.get_transaction_packages():
    if dnf.base.transaction.\
       transaction_item_action_is_inbound(pkg.get_action()):
        downloader.add(pkg.get_package(), "download")

downloader.download(True, True)
print("Download finished.")
                                                
                                            

Deploying a simple DNF5 plugin

What do we need?

• Devel and bindings packages
• Template sources
• Build tools (f.e. CMake)

Deploying a simple DNF5 plugin

How to write it?

• Definition
• Implementation
• Adapter A.K.A. boilerplate

Deploying a simple DNF5 plugin

Implementation

Deploying a simple DNF5 plugin

Adapter

Thank you for joining us!

Thank you for joining us!

Where are we?

How to try dnf5?

Thank you for joining us!

Where are we?

When will DNF5 land in Fedora?