The wayland-devel package contains libraries and header files for developing applications that use wayland.
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Package compiler and linker metadata toolkit
pkgconf is a program which helps to configure compiler and linker flags for development frameworks. It is similar to pkg-config from freedesktop.org, providing additional functionality while also maintaining compatibility.
Libva is an implementation for VA-API (Video Acceleration API)
Libva is an implementation for VA-API, which is an open-source library and API specification, provides access to graphics hardware acceleration capabilities for video processing. It consists of a main library and driver-specific acceleration backends for each supported hardware vendor.
The libva-devel package contains libraries and header files for developing applications that use libva.