Similar to 'environment-variable-definition', but applied to a <search-path-specification>.

Evaluate SEARCH-PATHS, a list of search-path specifications, for DIRECTORIES, a list of directory names, and return a list of specification/value pairs. Use GETENV to determine the current settings and report only settings not already effective.

Return the whole Guix package NAME that uses MODULES, a derivation of all the modules (under share/guile/site and lib/guile), and DEPENDENCIES, a list of packages depended on. COMMAND is the 'guix' program to use; INFO is the Info manual.

Return a file-like object that contains a compiled Guix.

Return, as a monadic value, the derivation to build the Guix from SOURCE for GUILE-VERSION. Use VERSION as the version string. Use CHANNEL-METADATA as the channel metadata sexp to include in (guix config).

PULL-VERSION specifies the version of the 'guix pull' protocol. Return #f if this PULL-VERSION value is not supported.

Write the contents of FILE to PORT in Nar format, recursing into sub-directories of FILE as needed.

This procedure does not make any file-system I/O calls. Instead, it calls the user-provided FILE-TYPE+SIZE, FILE-PORT, SYMLINK-TARGET, and DIRECTORY-ENTRIES procedures, which roughly correspond to 'lstat', 'readlink', and 'scandir'. POSTPROCESS-ENTRIES ensures that directory entries are valid; leave it as-is unless you know that DIRECTORY-ENTRIES provide filtered and sorted entries, in which case you can use 'identity'.

Read a file (possibly a directory structure) in Nar format from PORT. Call PROC on each file or directory read from PORT using:

(PROC FILE TYPE CONTENTS RESULT)

using SEED as the first RESULT. TYPE is a symbol like 'regular, and CONTENTS depends on TYPE.