spawn one-off software environments

show information about packages

profile the on-disk size of packages

Return as a monadic value a list of <profile> objects representing the profile of ITEMS and their requisites.

update the style of package definitions

implement the build daemon's substituter protocol

run the graphical installer program

Warn about non-forward updates of CHANNEL from START to COMMIT, without aborting.

Call VALIDATE-RECONFIGURE passing it, for each channel, the channel, the currently-deployed commit (from CURRENT-CHANNELS, which is as returned by 'guix system describe' by default) and the target commit (as returned by 'guix describe').

Return a program that calls 'kexec_file_load' to allow rebooting into OS via 'kexec'.

Return an executable store item that, upon being evaluated, will install BOOTCFG to BOOTCFG-FILE, a target file name, on DEVICES, a list of file system devices, at TARGET, a mount point, and subsequently run INSTALLER from BOOTLOADER-PACKAGE.

Using EVAL, a monadic procedure taking a single G-Expression as an argument, create a new generation of PROFILE pointing to the directory of OS, switch to it atomically, and run OS's activation script.

Load OS so that it can be rebooted into via kexec, if supported. Print a warning in case of failure.

Using EVAL, a monadic procedure taking a single G-Expression as an argument, upgrade the Shepherd (PID 1) by unloading obsolete services and loading new services as defined by OS.

Return an executable store item that, upon being evaluated, will create a new generation of PROFILE pointing to the directory of OS, switch to it atomically, and run OS's activation script.

Return an executable store item that, upon being evaluated, will upgrade the Shepherd (PID 1) by unloading obsolete services and loading new services. SERVICE-FILES is a list of Shepherd service files to load, and TO-START, TO-UNLOAD, and TO-RESTART are lists of the Shepherd services' canonical names (symbols).