Packages using USE-Flag examples:

app-admin/awscli-1.44.8

Universal Command Line Environment for AWS

2025-12-30

dev-python/backports-zstd-1.3.0

Backport of PEP-784 adding Zstandard to the standard library

2025-12-30

dev-python/boto3-1.42.18

The AWS SDK for Python

2025-12-30

dev-python/botocore-1.42.18

Low-level, data-driven core of boto 3

2025-12-30

dev-python/cysignals-1.12.6

Interrupt and signal handling for Cython

2025-12-30

dev-ruby/fakefs-3.2.0

A fake filesystem. Use it in your tests

2025-12-30

dev-python/faker-40.1.0

A Python package that generates fake data for you

2025-12-30

dev-ruby/ffi-1.17.3

Ruby extension for programmatically loading dynamic libraries

2025-12-30

dev-ruby/fiddle-1.1.8

A libffi wrapper for Ruby

2025-12-30

media-sound/fluidsynth-2.4.8

Software real-time synthesizer based on the Soundfont 2 specifications

2025-12-30

media-sound/fluidsynth-2.5.2

Software real-time synthesizer based on the Soundfont 2 specifications

2025-12-30

dev-ruby/git-4.0.7

Library for using Git in Ruby

2025-12-30

app-crypt/gnupg-2.4.9

The GNU Privacy Guard, a GPL OpenPGP implementation

2025-12-30

app-crypt/gnupg-2.5.16

The GNU Privacy Guard, a GPL OpenPGP implementation

2025-12-30

media-sound/guitarix-0.47.0-r2

Virtual guitar amplifier for Linux

2025-12-30

dev-ruby/httparty-0.24.0

Makes http fun Also, makes consuming restful web services dead easy

2025-12-30

dev-python/kombu-5.6.2

AMQP Messaging Framework for Python

2025-12-30

media-gfx/krita-6.0.0_alpha_pre20251229

Free digital painting application. Digital Painting, Creati

2025-12-30

media-libs/libcamera-0.6.0

Complex camera support library

2025-12-30

dev-libs/libmateweather-1.28.1

MATE library to access weather information from online services

2025-12-30

dev-util/maturin-1.11.0

Build and publish crates with pyo3, rust-cpython and cffi bindings

2025-12-30

dev-ruby/minitest-around-0.6.0

Alternative for setup/teardown dance

2025-12-30

media-libs/netpbm-11.13.0

A set of utilities for converting to/from the netpbm (and related) format

2025-12-30

dev-ruby/nokogiri-1.19.0

Nokogiri is an HTML, XML, SAX, and Reader parser

2025-12-30

media-gfx/nomacs-3.22.0

Qt-based image viewer

2025-12-30

dev-python/omemo-dr-1.2.0

OMEMO Crypto Library

2025-12-30

media-sound/owntone-29.0

DAAP (iTunes) and MPD media server

2025-12-30

app-emacs/pariemacs-3.14-r1

sci-mathematics/pari emacs mode

2025-12-30

app-emacs/parsebib-6.7

Emacs Lisp library for reading .bib files

2025-12-30

app-emacs/parseclj-1.1.1

Clojure Parser for Emacs Lisp

2025-12-30

app-emacs/parseedn-1.2.1

EDN parser for Emacs Lisp

2025-12-30

games-arcade/performous-1.3.1_p20251224

SingStar GPL clone

2025-12-30

media-gfx/photoqt-5.0

Simple but powerful Qt-based image viewer

2025-12-30

app-portage/portage-utils-0.98

Small and fast Portage helper tools written in C

2025-12-30

dev-python/primecountpy-0.2.1

Cython interface to sci-mathematics/primecount

2025-12-30

dev-ruby/pstore-0.2.0

Transactional File Storage for Ruby Objects

2025-12-30

dev-python/psutil-7.2.1

Retrieve information on running processes and system utilization

2025-12-30

dev-python/pygit2-1.19.1

Python bindings for libgit2

2025-12-30

dev-python/pylast-7.0.1

Python interface to last.fm and other api-compatible websites

2025-12-30

dev-ml/qcheck-0.27

QuickCheck inspired property-based testing for OCaml

2025-12-30

dev-ruby/readline-0.0.4

Class to build custom data structures, similar to a Hash

2025-12-30

dev-python/sabctools-9.2.1

Module providing raw yEnc encoding/decoding for SABnzbd

2025-12-30

dev-python/termcolor-3.3.0

ANSI Color formatting for output in terminal

2025-12-30

app-misc/tmux-3.6a

Terminal multiplexer

2025-12-30

sci-ml/torchvision-0.24.1

Datasets, transforms and models to specific to computer vision

2025-12-30

dev-python/uv-0.9.20

A Python package installer and resolver, written in Rust

2025-12-30

dev-python/uv-build-0.9.20

PEP517 uv build backend

2025-12-30

xfce-base/xfce4-session-4.21.1

A session manager for the Xfce desktop environment

2025-12-30

xfce-base/xfce4-settings-4.20.3

Configuration system for the Xfce desktop environment

2025-12-30

games-util/xpadneo-0.9.8

Advanced Linux Driver for Xbox One Wireless Controller

2025-12-30

dev-python/array-api-compat-1.13.0

Array API standard compatibility wrapper over NumPy and others

2025-12-29

dev-python/coverage-7.13.1

Code coverage measurement for Python

2025-12-29

media-gfx/darktable-5.4.0

A virtual lighttable and darkroom for photographers

2025-12-29

dev-python/elementpath-5.1.0

XPath 1.0/2.0 parsers and selectors for ElementTree and lxml

2025-12-29

sys-devel/gcc-15.2.1_p20251227

The GNU Compiler Collection

2025-12-29

sys-devel/gcc-16.0.0_p20251228

The GNU Compiler Collection

2025-12-29

sys-kernel/git-sources-6.19_rc3

The very latest -git version of the Linux kernel

2025-12-29

media-libs/harfbuzz-12.3.0

An OpenType text shaping engine

2025-12-29

media-gfx/hugin-2025.0.1

GUI for the creation & processing of panoramic images

2025-12-29

kde-misc/kshutdown-6.2

Shutdown manager for desktop environments like KDE Plasma

2025-12-29

dev-util/lcov-2.4

A graphical front-end for GCC's coverage testing tool gcov

2025-12-29

xfce-base/libxfce4windowing-4.20.5

Unified widget and session management libs for Xfce

2025-12-29

dev-python/mediafile-0.14.0

Read and write audio files' tags in Python

2025-12-29

kde-apps/messagelib-25.08.3-r2

Libraries for messaging functions

2025-12-29

dev-python/moto-5.1.19

Mock library for boto

2025-12-29

app-containers/netavark-1.17.1

A container network stack

2025-12-29

net-news/newsboat-2.42

An RSS/Atom feed reader for text terminals

2025-12-29

net-dns/openresolv-3.17.4

A framework for managing DNS information

2025-12-29

app-emacs/parseclj-1.1.1

Clojure Parser for Emacs Lisp

2025-12-29

dev-python/plette-2.1.0-r1

Structured Pipfile and Pipfile.lock models

2025-12-29

mail-mta/postfix-3.11.0_rc2

A fast and secure drop-in replacement for sendmail

2025-12-29

mail-mta/postfix-3.12_pre20251226

A fast and secure drop-in replacement for sendmail

2025-12-29

app-shells/pwsh-7.5.4-r2

Cross-platform automation and configuration tool

2025-12-29

app-portage/pycargoebuild-0.15.1

A generator for Rust/Cargo ebuilds written in Python

2025-12-29

media-sound/qmidiarp-0.7.2

Arpeggiator, sequencer and MIDI LFO for ALSA

2025-12-29

dev-ml/sedlex-3.7

2025-12-29

net-misc/socket-burst-dampener-1.3.3

A daemon that spawns one command per connection, and dampens c

2025-12-29

dev-python/tldextract-5.3.1

Accurately separate the TLD from the registered domain and subdomains o

2025-12-29

dev-cpp/tlfloat-1.15.0_p20250711

C++ template library for floating point operations

2025-12-29

xfce-base/tumbler-4.21.1

A thumbnail service for Thunar

2025-12-29

dev-python/types-psutil-7.2.0.20251228

Typing stubs for psutil

2025-12-29

media-libs/vulkan-loader-1.4.335.0-r1

Vulkan Installable Client Driver (ICD) Loader

2025-12-29

xfce-base/xfce4-panel-4.20.6

Panel for the Xfce desktop environment

2025-12-29

xfce-base/xfce4-power-manager-4.21.1

Power manager for the Xfce desktop environment

2025-12-29

xfce-base/xfce4-settings-4.21.1

Configuration system for the Xfce desktop environment

2025-12-29

gui-apps/xwaylandvideobridge-0.4.0_p20250215-r1

Screenshare Wayland windows to XWayland apps

2025-12-29