# This file is deprecated as per GLEP 56 in favor of metadata.xml.
# Please add your descriptions to your package's metadata.xml ONLY.
# * generated automatically using pmaint *

app-editors/antigravity-bin:libsecret - Enable password storage support using libsecret for storing credentials securely in the system keyring (GNOME Keyring, KWallet)
app-editors/antigravity-bin:wayland - Enable native Wayland support for better performance and security on Wayland compositors. Eliminates XWayland overhead.
app-editors/cursor:egl - Use EGL for smooth rendering on high refresh rate monitors
app-editors/cursor:wayland - Run in wayland mode under wayland sessions, xwayland otherwise. This flag doesn't affect x11 sessions.
app-editors/kiro:wayland - Enable native Wayland support for better integration with Wayland-based desktop environments
app-editors/vim:X - Link console vim against X11 libraries to enable title and clipboard features in xterm
app-editors/vim:crypt - Use dev-libs/libsodium for crypto support
app-editors/vim:cscope - Enable cscope interface
app-editors/vim:racket - Enable support for Scheme using dev-scheme/racket
app-editors/vim:terminal - Enable terminal emulation support
app-editors/vim:vim-pager - Install vimpager and vimmanpager links
app-editors/zed:X - Enable X11 display server support
app-editors/zed:claude-agent-acp-plus - Install the claude-agent-acp-plus ACP agent and apply source patches that force-enable Zed's acp-beta feature flag (advertising ACP elicitation form/url support) plus agent panel UI improvements: multiline elicitation fields, collapsible markdown option previews, a manual-mode badge, clickable file mentions in replayed messages, and adoption of the agent's config-option response
app-editors/zed:claude-agent-acp-tui - Install the claude-agent-acp-tui ACP bridge to run the Claude Code TUI in Zed's agent panel
app-editors/zed:claude-code-ide - Native Claude Code CLI editor integration (unofficial reverse-engineered IDE protocol, WebSocket MCP server) via a source patch
app-editors/zed:collab - Build the collaboration server
app-editors/zed:extensions-cli - Build the zed-extension CLI for managing extensions
app-editors/zed:mimalloc - Use mimalloc as the global memory allocator for improved performance
app-editors/zed:neovim - Enable Neovim integration for full vim compatibility via RPC
app-editors/zed:pulseaudio - Enable PulseAudio audio support
app-editors/zed:screen-capture - Enable screen capture support for collaboration sessions
app-editors/zed:tracy - Enable Tracy profiler integration for performance analysis
app-editors/zed:wayland - Enable Wayland display server support
app-editors/zed-bin:claude-agent-acp-plus - Install the claude-agent-acp-plus ACP adapter (VS Code-parity Claude Agent SDK fork) for Zed's agent panel
app-editors/zed-bin:claude-agent-acp-tui - Install the claude-agent-acp-tui ACP bridge to run the Claude Code TUI in Zed's agent panel
app-emulation/crossover-bin:capi - Enable ISDN support via CAPI
app-emulation/crossover-bin:osmesa - Add support for OpenGL in bitmaps using libOSMesa
app-emulation/crossover-bin:pcap - Support packet capture software (e.g. wireshark)
app-emulation/d7vk:crossdev-mingw - Use sys-devel/crossdev for the toolchain rather than dev-util/mingw64-toolchain (requires manual setup and is mostly unsupported, try disabling if you have issues)
app-emulation/d7vk:d3d10 - Enable support for DirectX 10 (d3d10.dll)
app-emulation/d7vk:d3d11 - Enable support for DirectX 11 (d3d11.dll)
app-emulation/d7vk:d3d8 - Enable support for DirectX 8 (d3d8.dll)
app-emulation/d7vk:d3d9 - Enable support for DirectX 9 (d3d9.dll)
app-emulation/d7vk:ddraw - Enable support for DirectDraw and Direct3D 1-7 (ddraw.dll)
app-emulation/d7vk:dxgi - Enable support for the DirectX Graphics Infrastructure (dxgi.dll)
app-emulation/dxvk-nvapi:crossdev-mingw - Use sys-devel/crossdev for the toolchain rather than dev-util/mingw64-toolchain (requires manual setup and is mostly unsupported, try disabling if you have issues)
app-emulation/qemu:accessibility - Adds support for braille displays using brltty
app-emulation/qemu:aio - Enables support for Linux's Async IO
app-emulation/qemu:alsa - Enable alsa output for sound emulation
app-emulation/qemu:bpf - Enable eBPF support for RSS implementation.
app-emulation/qemu:capstone - Enable disassembly support with dev-libs/capstone
app-emulation/qemu:curl - Support ISOs / -cdrom directives via HTTP or HTTPS.
app-emulation/qemu:fdt - Enables firmware device tree support
app-emulation/qemu:fuse - Enables FUSE block device export
app-emulation/qemu:glusterfs - Enables GlusterFS cluster fileystem via sys-cluster/glusterfs
app-emulation/qemu:gnutls - Enable TLS support for the VNC console server. For 1.4 and newer this also enables WebSocket support. For 2.0 through 2.3 also enables disk quorum support.
app-emulation/qemu:iscsi - Enable direct iSCSI support via net-libs/libiscsi instead of indirectly via the Linux block layer that sys-block/open-iscsi does.
app-emulation/qemu:jpeg - Enable jpeg image support for the VNC console server
app-emulation/qemu:keyutils - Support Linux keyrings via sys-apps/keyutils
app-emulation/qemu:multipath - Enable multipath persistent reservation passthrough via sys-fs/multipath-tools.
app-emulation/qemu:ncurses - Enable the ncurses-based console
app-emulation/qemu:nfs - Enable NFS support
app-emulation/qemu:numa - Enable NUMA support
app-emulation/qemu:passt - Enable TCP/IP in hypervisor via net-misc/passt
app-emulation/qemu:pin-upstream-blobs - Pin the versions of BIOS firmware to the version included in the upstream release. This is needed to sanely support migration/suspend/resume/snapshotting/etc... of instances. When the blobs are different, random corruption/bugs/crashes/etc... may be observed.
app-emulation/qemu:pipewire - Enable pipewire output for sound emulation
app-emulation/qemu:plugins - Enable qemu plugin API via shared library loading.
app-emulation/qemu:png - Enable png image support for the VNC console server
app-emulation/qemu:pulseaudio - Enable pulseaudio output for sound emulation
app-emulation/qemu:rbd - Enable rados block device backend support, see https://docs.ceph.com/en/mimic/rbd/qemu-rbd/
app-emulation/qemu:sdl - Enable the SDL-based console
app-emulation/qemu:sdl-image - SDL Image support for icons
app-emulation/qemu:slirp - Enable TCP/IP in hypervisor via net-libs/libslirp
app-emulation/qemu:spice - Enable Spice protocol support via app-emulation/spice
app-emulation/qemu:ssh - Enable SSH based block device support via net-libs/libssh2
app-emulation/qemu:static-user - Build the User targets as static binaries
app-emulation/qemu:systemtap - Enable SystemTap/DTrace tracing
app-emulation/qemu:usb - Enable USB passthrough via dev-libs/libusb
app-emulation/qemu:usbredir - Use sys-apps/usbredir to redirect USB devices to another machine over TCP
app-emulation/qemu:vde - Enable VDE-based networking
app-emulation/qemu:vhost-net - Enable accelerated networking using vhost-net, see https://www.linux-kvm.org/page/VhostNet
app-emulation/qemu:virgl - Enable experimental Virgil 3d (virtual software GPU)
app-emulation/qemu:virtfs - Enable VirtFS via virtio-9p-pci / fsdev. See https://wiki.qemu.org/Documentation/9psetup
app-emulation/qemu:vte - Enable terminal support (x11-libs/vte) in the GTK+ interface
app-emulation/qemu:xattr - Add support for getting and setting POSIX extended attributes, through sys-apps/attr. Requisite for the virtfs backend.
app-emulation/qemu:xdp - Enable support for XDP through net-libs/xdp-tools
app-emulation/qemu:xen - Enables support for Xen backends
app-misc/claude-desktop-bin:egl - Use EGL for smooth rendering on high refresh rate monitors
app-misc/claude-desktop-bin:wayland - Run in wayland mode under wayland sessions, xwayland otherwise. This flag doesn't affect x11 sessions.
app-office/freeoffice:pax_kernel - Triggers a paxmarking of the binary
app-office/libreoffice:base - Enable full support for LibreOffice Base databases (involves additional bundled libs)
app-office/libreoffice:coinmp - Use sci-libs/coinor-mp as alternative solver
app-office/libreoffice:googledrive - Enable support for remote files on Google Drive
app-office/libreoffice:gtk3 - Enable support for x11-libs/gtk+:3
app-office/libreoffice:gtk4 - Enable support for gui-libs/gtk:4
app-office/libreoffice:mariadb - Prefer mariadb connector over mysql connector
app-office/libreoffice:odk - Build the Office Development Kit
app-office/libreoffice:pdfimport - Enable PDF import via the Poppler library
app-office/libreoffice:vulkan - Enable Vulkan usage via the skia library (clang recommended)
app-office/libreoffice-l10n:offlinehelp - Install help files locally instead of using the LibreOffice Wiki
app-office/obsidian:appindicator - Enable appindicator (system tray) support via dev-libs/libayatana-appindicator.
app-office/obsidian:wayland - Install an additional desktop entry that launches Obsidian with native Wayland flags.
app-portage/bentoolkit:browser - Build the chromedp backend for the headless "script" version parser, driving an already-installed Chrome/Chromium over the DevTools Protocol (no browser download needed)
app-portage/bentoolkit:kde - Install a Dolphin/KIO service menu (Plasma 6) that asks for a one-time code via kde-apps/kdialog before an irreversible delete
app-portage/bentoolkit:playwright - Build the headless-browser ("script") version parser backend used by some autoupdate packages (via playwright-go). Requires the Playwright browsers to be installed at runtime (playwright install chromium)
app-portage/bentoolkit:secure - Install interactive-shell safety guards (/etc/bash/bashrc.d/30-bentoo-safety.bash) that add a confirmation delay/block to destructive commands (rm -rf, reboot, poweroff, etc.)
app-portage/bentoolkit:system-snapshot - Pull in the full set of runtime backends for app-backup/btrbk and app-backup/snapper (snapshot engines) plus app-backup/restic and net-misc/rclone (cloud-ship) used by bentoo snapshot. The binary degrades gracefully and 'bentoo snapshot detect' names any absent backend at runtime
app-portage/bentoolkit:systemd - Pull in sys-apps/systemd for bentoo snapshot scheduling via systemd timers
dev-db/sqlitebrowser:sqlcipher - Allow to open and to edit databases encrypted using dev-db/sqlcipher
dev-games/godot:deprecated - Enable support for deprecated features
dev-games/godot:double-precision - Use double-precision floats (default: single-precision)
dev-games/godot:raycast - Enable the raycast Editor module using media-libs/embree
dev-games/godot:tools - Enable the Godot Editor for game development
dev-lang/flutter:examples - Install example projects
dev-lang/lua:deprecated - Enable deprecated features for compatibility with older Lua versions
dev-lang/lua:readline - Enable readline support for the Lua command line interpreter
dev-lang/rust:clippy - Install clippy, Rust code linter
dev-lang/rust:dist - Install dist tarballs (used for bootstrapping)
dev-lang/rust:miri - Install miri, an interpreter for Rust's mid-level intermediate representation (requires USE=nightly, sometimes is broken)
dev-lang/rust:mrustc-bootstrap - Use dev-lang/mrustc to build the bootstrap Rust sysroot from this package's source
dev-lang/rust:nightly - Enable nightly (UNSTABLE) features (NOTE: it does not install nightly version, just enables features marked as nightly at time of release)
dev-lang/rust:parallel-compiler - Build a multi-threaded rustc (experimental, not tested by upstream)
dev-lang/rust:rust-analyzer - Install rust-analyzer, A Rust compiler front-end for IDEs (language server)
dev-lang/rust:rust-src - Install rust-src, needed by developer tools and for build-std (cross)
dev-lang/rust:rustfmt - Install rustfmt, Rust code formatter
dev-lang/rust:system-llvm - Use the system LLVM installation
dev-lang/rust:wasm - Build support for the wasm32-unknown-unknown target
dev-lang/rust-bin:clippy - Install clippy, Rust code linter
dev-lang/rust-bin:rust-analyzer - Install rust-analyzer, A Rust compiler front-end for IDEs (language server)
dev-lang/rust-bin:rust-src - Install rust-src, needed by developer tools and for build-std (cross)
dev-lang/rust-bin:rustfmt - Install rustfmt, Rust code formatter
dev-libs/imath:large-stack - Enables code to take advantage of large stack support
dev-libs/libayatana-appindicator-glib:test - Build and run the upstream test suite (requires dbus-test-runner)
dev-libs/liborcus:spreadsheet-model - Enable the spreadsheet model implementation
dev-libs/liborcus:tools - Build various low-level parsers
dev-libs/sentry-native:breakpad - Use dev-util/breakpad as the crash handler
dev-libs/sentry-native:curl - Enable support for automated uploading of crash reports
dev-python/conda:mamba - enable libmamba resolver
dev-python/conda:user - use user's home directory as default pkgs and envs prefix
dev-util/breakpad:tools - Build tools
dev-util/nvidia-cuda-toolkit:clang - Depend on llvm-core/clang as host compiler
dev-util/nvidia-cuda-toolkit:debugger - Install the CUDA debugger
dev-util/nvidia-cuda-toolkit:nsight - Install profiling and optimizing tools (nsight-compute, nsight-systems)
dev-util/nvidia-cuda-toolkit:profiler - Install the NVIDIA CUDA profiler (nvprof) and the related libraries
dev-util/nvidia-cuda-toolkit:rdma - Enable infiniband support via sys-cluster/rdma-core
dev-util/nvidia-cuda-toolkit:sanitizer - Install compute-sanitizer tool
dev-util/nvidia-cuda-toolkit:vis-profiler - Install the NVIDIA CUDA visual profiler (nvvp)
dev-util/vulkan-tools:cube - Build the cube/cubepp demos
kde-plasma/kdeplasma-addons:alternate-calendar - Support alternate calendar systems (currently Chinese or Indian) via dev-libs/icu
kde-plasma/kdeplasma-addons:qmk - Pull in kde-plasma/kameleon-qmk-helper so the Kameleon kded can apply the accent colour to QMK keyboard LEDs
kde-plasma/kdeplasma-addons:share - Enable applet for quickly sharing data to a variety of sources
kde-plasma/kdeplasma-addons:webengine - Enable dictionary and web browser applets using dev-qt/qtwebengine
kde-plasma/spectacle:share - Enable support for a share menu using kde-frameworks/purpose
mail-client/betterbird-bin:wayland - Enable native Wayland support (set MOZ_ENABLE_WAYLAND=1 at runtime)
mail-client/proton-mail-bin:pulseaudio - Pull in libpulse (or apulse) for notification sounds
media-gfx/blender:alembic - Add support for Alembic through media-gfx/alembic.
media-gfx/blender:bullet - Enable Bullet (Physics Engine).
media-gfx/blender:collada - Add support for Collada interchange format through media-libs/opencollada.
media-gfx/blender:color-management - Enable color management via media-libs/opencolorio.
media-gfx/blender:cuda - Build cycles renderer with nVidia CUDA support.
media-gfx/blender:cycles - Enable the Cycles raytracing render engine.
media-gfx/blender:cycles-bin-kernels - Precompile the cycles render kernels for the CUDA/HIP/OneAPI backends, if they are enabled, at compile time. This makes it so that the user doesn't have to wait for the kernels to compile when they are used for the first time in Blender. If this option is not on, they will be built as needed at runtime.
media-gfx/blender:embree - Use embree to accelerate certain areas of the Cycles render engine.
media-gfx/blender:experimental - Enable experimental features
media-gfx/blender:fluid - Adds fluid simulation support via the built-in Mantaflow library.
media-gfx/blender:hip - Build cycles renderer with AMD HIP support.
media-gfx/blender:hiprt - Enable AMD HIP GPU ray tracing acceleration via dev-libs/hiprt.
media-gfx/blender:manifold - Enable Manifold render backend via sci-mathematics/manifold
media-gfx/blender:nanovdb - Enable nanoVDB support in Cycles. Uses less memory than regular openVDB when rendering.
media-gfx/blender:ndof - Enable NDOF input devices (SpaceNavigator and friends).
media-gfx/blender:oidn - Enable OpenImageDenoiser Support
media-gfx/blender:openpgl - Enable path guiding support in Cycles
media-gfx/blender:opensubdiv - Add rendering support form OpenSubdiv from Dreamworks Animation through media-libs/opensubdiv.
media-gfx/blender:openvdb - Enable openvdb for volumetric processing, like the voxel remesher. Also enables volumetric GPU preview rendering for Nvidia cards.
media-gfx/blender:optix - Add support for NVIDIA's OptiX Raytracing Engine.
media-gfx/blender:osl - Add support for OpenShadingLanguage scripting.
media-gfx/blender:pipewire - Enable Pipewire for audio support on Linux
media-gfx/blender:potrace - Add support for converting bitmaps into Grease pencil line using the potrace library.
media-gfx/blender:pugixml - Enable PugiXML support (Used for OpenImageIO, Grease Pencil SVG export)
media-gfx/blender:renderdoc - Build Blender with renderdoc support
media-gfx/blender:rubberband - Build with Rubber Band for audio time-stretching and pitch-scaling (used by Audaspace) via media-libs/rubberband
media-gfx/blender:tbb - Use threading building blocks library from dev-cpp/tbb.
media-gfx/blender:vulkan - Add support for the Vulkan viewport backend
media-gfx/freecad:addonmgr - Build the addon manager module for automatic handling of 3rd party addons
media-gfx/freecad:assembly - Build the assembly module to create 3D models composed of several distinguishable parts as a conformed machine.
media-gfx/freecad:bim - Build the BIM module and workbench
media-gfx/freecad:cam - Build the CAM module and workbench
media-gfx/freecad:cloud - Build the Cloud workbench, to access cloud providers (mostly Amazon S3).
media-gfx/freecad:designer - Build and install the Qt designer plugin, so the FreeCAD widgets can be used from within designer.
media-gfx/freecad:fem - Build the FEM module and workbench which provides Finite Element Analysis (FEA) workflows
media-gfx/freecad:gui - Build FreeCAD with a Qt based GUI. If built without setting this USE flag, FreeCAD can be used in a headless mode, for server-side instances. The Python modules are available, without their GUI parts though, if this is unset.
media-gfx/freecad:idf - Build the IDF module to provide file exchange capabilities with IDF files
media-gfx/freecad:inspection - Build the inspection workbench which gives you specific tools for examination of shapes (experimental)
media-gfx/freecad:mesh - Build the mesh module and workbench
media-gfx/freecad:netgen - Build support for the netgen mesher through media-gfx/netgen.
media-gfx/freecad:openscad - Build the OpenSCAD module for interoperability with OpenSCAD and repairing Constructive Solid Geometry (CSG) history
media-gfx/freecad:pcl - Use external sci-libs/pcl for point clouds support.
media-gfx/freecad:points - Build the points module and workbench for working with point clouds
media-gfx/freecad:reverse - Build the reverse engineering module and workbench
media-gfx/freecad:robot - Build the robot module and workbench for studying robot movements
media-gfx/freecad:smesh - Build Salome SMESH
media-gfx/freecad:spacenav - Add support for space navigator devices through dev-libs/libspnav
media-gfx/freecad:surface - Build the surface module and workbench
media-gfx/imagemagick:corefonts - Use media-fonts/corefonts which is required by some commands
media-gfx/imagemagick:fpx - Enable media-libs/libfpx support
media-gfx/imagemagick:hdri - Enable High Dynamic Range Images formats
media-gfx/imagemagick:lqr - Enable experimental liquid rescale support using media-libs/liblqr
media-gfx/imagemagick:pango - Enable Pango support using x11-libs/pango
media-gfx/imagemagick:q32 - Set quantum depth value to 32
media-gfx/imagemagick:q8 - Set quantum depth value to 8
media-gfx/inkscape:cdr - Enable support for CorelDRAW files via media-libs/libcdr
media-gfx/inkscape:dia - Enable DIA flow chart import via app-office/dia
media-gfx/inkscape:inkjar - Enable support for OpenOffice.org SVG jar files
media-gfx/inkscape:sourceview - Enable syntax highlighting support via x11-libs/gtksourceview
media-gfx/inkscape:svg2 - Enable support for new SVG2 features
media-gfx/inkscape:visio - Enable support for Microsoft Visio diagrams via media-libs/libvisio
media-gfx/inkscape:wpg - Enable support for WordPerfect graphics via app-text/libwpg
media-gfx/pixieditor-bin:opengl - Ensure OpenGL support is available (requires graphics drivers)
media-gfx/pixieditor-bin:vulkan - Install Vulkan loader for hardware-accelerated rendering (requires compatible GPU and drivers)
media-libs/dav2d:10bit - Add support for building 10-bit and 12-bit AV2.
media-libs/dav2d:8bit - Add support for decoding 8-bit AV2.
media-libs/dav2d:asm - Build optimized assembly (nasm) routines where available.
media-libs/dav2d:xxhash - Enable dev-libs/xxhash support for the hashing muxer.
media-libs/gst-plugins-bad:bzip2 - Enable bzip2 encoder/decoder plugin
media-libs/gst-plugins-base:X - Enable ximagesink and xvimagesink plugins; build GLX platform support if USE=opengl is enabled; build x11 windowing system support if USE=egl is enabled
media-libs/gst-plugins-base:gbm - Enable Graphics Buffer Manager based EGL windowing system support (requires egl and at least one of gles or opengl)
media-libs/gst-plugins-base:gles2 - Enable OpenGL library and plugin via GLESv2 API (requires egl)
media-libs/gst-plugins-base:ivorbis - Enable integer based vorbis decoder
media-libs/gst-plugins-base:opengl - Enable OpenGL library and plugin via desktop OpenGL API
media-libs/gst-plugins-base:pango - Enable pango GStreamer plugin
media-libs/gst-plugins-base:wayland - Enable Wayland EGL windowing system support (requires egl and at least one of gles2 or opengl)
media-libs/gstreamer:ptp - Controls Precision Time Protocol (PTP) helper. Written in Rust.
media-libs/gstreamer:unwind - Enable sys-libs/libunwind usage for better backtrace support in leaks tracer module
media-libs/harfbuzz:experimental - Enable experimental APIs
media-libs/harfbuzz:glib - Enable dev-libs/glib unicode functions
media-libs/harfbuzz:graphite - Enable media-gfx/graphite2 complementary shaper
media-libs/libcamera:drm - Build with drm support for cam tool
media-libs/libcamera:elfutils - Build with improved debugging using dev-libs/elfutils
media-libs/libcamera:gui - Build QCam extra tool
media-libs/libcamera:openssl - Verify IPA modules signatures using dev-libs/openssl. Note:dev-libs/openssl is also required at build time to sign IPA modules.
media-libs/libcamera:sdl - Build Cam extra tool with SDL sink support (requires USE=gui)
media-libs/libcamera:tools - Build extra tools (including cam, qcam and lc-compliance). Note: 'qcam' requires also USE="gui"
media-libs/libcamera:trace - Build with tracing capabilities
media-libs/libcamera:unwind - Build with improved debugging using sys-libs/libunwind (has no effect if USE=elfutils is set)
media-libs/libffado:test-programs - Install standalone test programs
media-libs/mesa:d3d9 - Enable Direct 3D9 API through Nine state tracker. Can be used together with patched wine.
media-libs/mesa:llvm - Enable LLVM backend for Gallium3D.
media-libs/mesa:lm-sensors - Enable Gallium HUD lm-sensors support.
media-libs/mesa:opencl - Enable the Rusticl Gallium OpenCL state tracker.
media-libs/mesa:osmesa - Build the Mesa library for off-screen rendering.
media-libs/mesa:proprietary-codecs - Enable codecs for patent-encumbered audio and video formats.
media-libs/mesa:vdpau - Enable the VDPAU acceleration interface for the Gallium3D Video Layer.
media-libs/mesa:vulkan-overlay - Build vulkan-overlay-layer which displays Frames Per Second and other statistics
media-libs/mesa:wayland - Enable support for dev-libs/wayland
media-libs/mesa:xa - Enable the XA (X Acceleration) API for Gallium3D.
media-libs/opencv:atlas - Use sci-libs/atlas for blas, lapack and sparse blas routines (Experimental!)
media-libs/opencv:contrib - Install user contributed scripts from opencv_contrib (Experimental!)
media-libs/opencv:contribcvv - Enable CVV in contrib
media-libs/opencv:contribdnn - Enable DNN module
media-libs/opencv:contribfreetype - Enable Drawing UTF-8 strings with media-libs/freetype&media-libs/harfbuzz
media-libs/opencv:contribhdf - Enable HDF module (requires sci-libs/hdf5)
media-libs/opencv:contribovis - Enable OGRE vision module support (dev-games/ogre)
media-libs/opencv:contribsfm - Enable SFM module (requires USE="eigen gflags glog")
media-libs/opencv:contribxfeatures2d - Enables xfeatures2d and autodownload of samples in contrib
media-libs/opencv:cuda - Enable NVIDIA Cuda computations support (Experimental!)
media-libs/opencv:cudnn - Enable support for nVidia cuDNN library
media-libs/opencv:dnnsamples - Enable dnn caffeemodel samples
media-libs/opencv:eigen - Enable usage of dev-cpp/eigen for computations
media-libs/opencv:features2d - Enable features2d module
media-libs/opencv:gdal - Enable support for sci-libs/gdal library
media-libs/opencv:gflags - Use Google's C++ argument parsing library (dev-cpp/gflags)
media-libs/opencv:glog - Use Google's C++ logging library (dev-cpp/glog)
media-libs/opencv:gtk3 - Enable x11-libs/gtk+:3 support
media-libs/opencv:jasper - Use media-libs/jasper for jpeg2k support
media-libs/opencv:mkl - Use sci-libs/mkl for blas, lapack and sparse blas routines
media-libs/opencv:non-free - Enable non-free components
media-libs/opencv:opencvapps - Enable compilation with opencvapps
media-libs/opencv:openni - Adds support for Kinect-like 3D sensors devices with dev-libs/OpenNI
media-libs/opencv:openni2 - Adds support for Kinect-like 3D sensors devices with dev-libs/OpenNI2 (should be preferred over openni)
media-libs/opencv:spng - Use media-libs/libspng for png support
media-libs/opencv:tbb - Enable multithreading with the Intel Threads Building Block (dev-cpp/tbb)
media-libs/opencv:tesseract - Use Google's OCR Engine
media-libs/opencv:testprograms - Build and install programs for testing OpenCV (performance)
media-libs/opencv:truetype - Enable media-libs/freetype support for gapi module
media-libs/opencv:video_cards_intel - Enable Video Acceleration API for hardware decoding for Intel cards
media-libs/opencv:vtk - Build new 3D visualization module viz based on sci-libs/vtk
media-libs/opencv:vulkan - Enable experimental Vulkan backend
media-libs/opencv:wechat-qrcode - Enable wechat_qrcode module
media-libs/vulkan-loader:layers - Include the vulkan layers
media-plugins/frei0r-plugins:facedetect - Enables building of facedetect plugin, which depends on media-libs/opencv
media-plugins/frei0r-plugins:scale0tilt - Enables building of scale0tilt and vectorscope plugins, which depend on media-libs/gavl
media-plugins/gst-plugins-gtk:gles2 - Enable gtkglsink OpenGL sink based on GLESv2 API
media-plugins/gst-plugins-gtk:opengl - Enable gtkglsink OpenGL sink based on desktop OpenGL API
media-plugins/gst-plugins-meta:http - Enable http streaming via net-libs/libsoup
media-plugins/gst-plugins-meta:libde265 - Enable H.265 decoding via media-libs/libde265
media-plugins/gst-plugins-meta:libvisual - Enable visualization effects via media-libs/libvisual
media-plugins/gst-plugins-meta:nvcodec - Enable NVIDIA GPU hardware encoding/decoding (NVENC/NVDEC)
net-analyzer/netdata:dbengine - Enable the Netdata database engine
net-analyzer/netdata:ipmi - Install sys-apps/ipmitool required for monitoring IPMI sensors
net-analyzer/netdata:mongodb - Enable support for the mongodb backend
net-analyzer/netdata:nfacct - Enable the nfacct plugin
net-analyzer/netdata:nodejs - Enable use of nodejs (which some plugins use)
net-analyzer/netdata:prometheus - Enable support for the Prometheus remote write backend
net-analyzer/netdata:xen - Enable monitoring of xen
net-dns/bind-tools:gssapi - Enable gssapi support
net-firewall/ufw:examples - Example ufw config files
net-firewall/ufw:ipv6 - IPv6 support for iptables
net-libs/bun-bin:cpu_flags_x86_avx2 - Select the AVX2-optimized binary on amd64 (default on modern CPUs).
net-libs/libqmi:mbim - Support QMI over Mobile Broadband Interface Model (MBIM)
net-libs/libqmi:qrtr - Support QMI over IPC Router bus (QRTR)
net-libs/nodejs:inspector - Enable V8 inspector
net-libs/nodejs:npm - Enable NPM package manager
net-libs/nodejs:pax-kernel - Enable building under a PaX enabled kernel
net-libs/nodejs:pnpm - Install the sys-apps/pnpm package manager
net-libs/nodejs:snapshot - Enable snapshot creation for faster startup
net-libs/nodejs:system-icu - Use system dev-libs/icu instead of the bundled version
net-libs/nodejs:system-ssl - Use system OpenSSL instead of the bundled one
net-libs/webkit-gtk:examples - Install the MiniBrowser example application
net-libs/webkit-gtk:gamepad - Enable gamepad input support via dev-libs/libmanette
net-libs/webkit-gtk:jumbo-build - Combine source files to speed up build process
net-libs/webkit-gtk:webdriver - Build and install the WebKitWebDriver binary for browser automation through the W3C WebDriver protocol. Only one installed SLOT may provide it (cross-SLOT blocker enforced).
net-misc/modemmanager:mbim - Enable MBIM modem protocol
net-misc/modemmanager:qmi - Enable support for the QMI modem protocol used by devices with Qualcomm chipsets
net-misc/modemmanager:qrtr - Enable support for the QMI over IPC Router bus (QRTR) protocol
net-misc/networkmanager:concheck - Enable connectivity checking support
net-misc/networkmanager:connection-sharing - Support connection sharing (uses net-dns/dnsmasq)
net-misc/networkmanager:dhclient - Use dhclient from net-misc/dhcp for getting an IP via DHCP
net-misc/networkmanager:dhcpcd - Use net-misc/dhcpcd for getting an IP
net-misc/networkmanager:elogind - Use sys-auth/elogind for session tracking
net-misc/networkmanager:iptables - Use net-firewall/iptables for connection sharing
net-misc/networkmanager:iwd - Use net-wireless/iwd instead of net-wireless/wpa_supplicant for wifi support by default
net-misc/networkmanager:modemmanager - Enable support for mobile broadband devices using net-misc/modemmanager
net-misc/networkmanager:nbft - Enable NBFT support in the initrd generator
net-misc/networkmanager:nftables - Use net-firewall/nftables for connection sharing
net-misc/networkmanager:nss - Use dev-libs/nss for cryptography
net-misc/networkmanager:ofono - Use net-misc/ofono for telephony support.
net-misc/networkmanager:ovs - Enable OpenVSwitch support
net-misc/networkmanager:ppp - Enable support for mobile broadband and PPPoE connections using net-dialup/ppp
net-misc/networkmanager:psl - Use public suffix list via net-libs/libpsl
net-misc/networkmanager:resolvconf - Use net-dns/openresolv for managing DNS information in /etc/resolv.conf. Generally, a symlink to /run/NetworkManager/resolv.conf is simpler. On systems running systemd-resolved, disable this flag and create a symlink to /run/systemd/resolve/stub-resolv.conf.
net-misc/networkmanager:teamd - Enable Teamd control support
net-misc/networkmanager:tools - Build cli tools such as nmcli, nmtui and nm_cloud_setup
net-misc/networkmanager:wext - Enable support for the deprecated Wext (Wireless Extensions) API; needed for some older drivers (e.g. ipw2200, ndiswrapper)
net-misc/networkmanager:wifi - Enable support for wifi and 802.1x security
net-misc/postman-bin:pax-kernel - Triggers a paxmarking of the binary
net-misc/rustdesk:hwaccel - enable hardware-accelerated rendering support
net-misc/rustdesk:wayland - enable wayland support
net-p2p/qbittorrent:dbus - Enable support for notifications and power-management features via D-Bus
net-p2p/qbittorrent:webui - Install qBittorrent Web UI (qbittorrent-nox)
sci-ml/llama-cpp:blis - Build a BLIS backend
sci-ml/llama-cpp:flexiblas - Build a FlexiBLAS backend
sci-ml/llama-cpp:openblas - Build an OpenBLAS backend
sci-ml/llama-cpp:opencl - Build an OpenCL backend, so far only works on Adreno and Intel GPUs
sci-ml/llama-cpp:rocm - Build a HIP (ROCm) backend
sci-ml/llama-cpp:rpc - Build with rpc-server
sci-ml/llama-cpp:server - Build with example server
sci-ml/llama-cpp:spacemit - Build with SpacemiT IME instruction support
sci-ml/llama-cpp:webui - Build server with embedded WebUI
sci-ml/llama-cpp:wmma - Use rocWMMA to enhance flash attention performance
sci-ml/ollama-bin:cuda - Enable NVIDIA CUDA GPU acceleration support. Requires compatible NVIDIA GPU (compute capability 6.0+, Pascal architecture or newer) and nvidia-cuda-toolkit. Significantly improves inference performance for large models.
sci-ml/ollama-bin:rocm - Enable AMD ROCm GPU acceleration support. Requires compatible AMD GPU (Radeon RX 6000 series or newer, or Radeon VII) and ROCm libraries. May require HSA_OVERRIDE_GFX_VERSION environment variable for optimal compatibility. This is experimental and not all GPU models are supported.
sys-apps/fwupd:amdgpu - Build and install AMD dGPU (Navi3x and above) plugin
sys-apps/fwupd:archive - Use app-arch/libarchive for archives support
sys-apps/fwupd:cbor - Enable CBOR support for coSWID and uSWID via dev-libs/libcbor
sys-apps/fwupd:flashrom - Enable flashrom plugin via sys-apps/flashrom
sys-apps/fwupd:modemmanager - Build and install Modem Manager plugin
sys-apps/fwupd:nvme - Build and install NVMe plugin
sys-apps/fwupd:protobuf - Enable protobuf plugins
sys-apps/fwupd:spi - Install Intel-SPI plugin
sys-apps/fwupd:synaptics - Install synaptics plugin
sys-apps/fwupd:tpm - Install Trusted Platform Module plugin
sys-apps/fwupd:uefi - Enable UEFI support
sys-apps/xdg-desktop-portal:flatpak - Enable sys-apps/flatpak integration
sys-apps/xdg-desktop-portal:seccomp - Use sys-apps/bubblewrap (which requires seccomp) to sandbox some functionality like icon handling
sys-kernel/linux-firmware:compress-xz - Compress firmware using xz (app-arch/xz-utils) before installation
sys-kernel/linux-firmware:compress-zstd - Compress firmware using zstd (app-arch/zstd) before installation
sys-kernel/linux-firmware:deduplicate - Create symlinks for all firmware that is duplicate using rdfind
sys-kernel/linux-firmware:dist-kernel - Delegate microcode initramfs generation to sys-kernel/installkernel
sys-kernel/linux-firmware:initramfs - Create and install initramfs for early microcode loading in /boot (only AMD for now)
sys-kernel/linux-firmware:redistributable - Install also non-free (but redistributable) firmware files
sys-kernel/linux-firmware:savedconfig - Allows individual selection of firmware files
sys-kernel/linux-firmware:unknown-license - Install firmware files whose license is unknown
www-client/brave-browser:qt6 - Enable Qt6 integration for better KDE/Qt desktop environment support. Provides native look and feel on KDE Plasma and other Qt-based desktops.
www-client/brave-browser:selinux - Enable SELinux policy support for enhanced security in SELinux-enabled systems. Required for proper operation on systems with SELinux in enforcing mode.
www-client/brave-browser:verify-sig - Verify the release checksum using Brave's OpenPGP signature. Ensures the integrity and authenticity of the downloaded package.
www-client/librewolf:clang - Use Clang compiler instead of GCC
www-client/librewolf:eme-free - Disable EME (DRM plugin) capability at build time
www-client/librewolf:gmp-autoupdate - Allow Gecko Media Plugins (binary blobs) to be automatically downloaded and kept up-to-date in user profiles
www-client/librewolf:hwaccel - Force-enable hardware-accelerated rendering (Mozilla bug 594876)
www-client/librewolf:jumbo-build - Enable unified build - combines source files to speed up build process, but requires more memory
www-client/librewolf:libproxy - Enable libproxy support
www-client/librewolf:openh264 - Use media-libs/openh264 for H264 support instead of downloading binary blob from Mozilla at runtime
www-client/librewolf:pgo - Add support for profile-guided optimization for faster binaries - this option will double the compile time
www-client/librewolf:pulseaudio - Add sound server support via media-libs/libpulse (may be PulseAudio or Pipewire, or apulse if installed)
www-client/librewolf:sndio - Enable support for the media-sound/sndio backend
www-client/librewolf:system-av1 - Use the system-wide media-libs/dav1d and media-libs/libaom library instead of bundled
www-client/librewolf:system-harfbuzz - Use the system-wide media-libs/harfbuzz instead of bundled and media-gfx/graphite2 in most cases
www-client/librewolf:system-icu - Use the system-wide dev-libs/icu instead of bundled
www-client/librewolf:system-jpeg - Use the system-wide media-libs/libjpeg-turbo instead of bundled
www-client/librewolf:system-libevent - Use the system-wide dev-libs/libevent instead of bundled
www-client/librewolf:system-libvpx - Use the system-wide media-libs/libvpx instead of bundled
www-client/librewolf:system-pipewire - Use system media-video/pipewire for WebRTC and screencast instead of bundled one
www-client/librewolf:system-png - Use the system-wide media-libs/libpng instead of bundled (requires APNG patches)
www-client/librewolf:system-webp - Use the system-wide media-libs/libwebp instead of bundled
www-client/librewolf:wasm-sandbox - Sandbox certain third-party libraries through WebAssembly using RLBox
www-client/librewolf:wifi - Enable necko-wifi for NetworkManager integration, and access point MAC address scanning for better precision with opt-in geolocation services
www-client/servo:gstreamer - Enable HTML media (audio/video) playback support via GStreamer (servo/media-gstreamer feature)
x11-drivers/xf86-video-qxl:xspice - Include Xspice, a standard X server that is also a Spice server