Return a Linux console keymap file for LAYOUT, a <keyboard-layout> record. Layout information is taken from the XKEYBOARD-CONFIG package.

Return a new keyboard layout with the given NAME and VARIANT.

NAME must be a string such as "fr"; VARIANT must be a string such as "bepo" or "nodeadkeys". See the 'xkeyboard-config' package for valid options.

Return a derivation of a script that runs OS as a Linux container. MAPPINGS is a list of <file-system> objects that specify the files/directories that will be shared with the host system.

Evaluate EXP, a gexp, in a new process executing in separate namespaces as listed in NAMESPACES. Add MOUNTS, a list of <file-system>, and MAPPINGS, a list of <file-system-mapping>, to the set of directories visible in the process's mount namespace. Inside the namespaces, run code as GUEST-UID and GUEST-GID. Return the process' exit status as a monadic value.

This is useful to implement processes that, unlike derivations, are not entirely pure and need to access the outside world or to perform side effects.

Return an operating system based on OS for use in a Linux container environment. MAPPINGS is a list of <file-system-mapping> to realize in the containerized OS. EXTRA-FILE-SYSTEMS is a list of file systems to add to OS.

Return the list of statically-linked, stripped packages to check FILE-SYSTEMS.

Return the list of Linux modules needed to mount FILE-SYSTEMS.