Rewrites the "elm.json" file in the working directory---which must be of `"type":"application"`, not `"type":"package"`---to refer to the dependency versions actually provided via Guix. The GUIX_ELM_OFFLINE_REGISTRY_FILE environment variable is used to find available versions.

Given the store directory STORE-DIR return the absolute install directory for libraries following the ELPA convention.

Build the given Emacs package, applying all of PHASES in order.

Run Emacs in batch mode, and execute the Elisp code EXPR. If DYNAMIC? is true, evaluate using dynamic scoping.

Load FILE in Emacs using batch mode, and execute the elisp code EXPR.

Byte compile all files in DIR and its sub-directories.

Parse the header SECTION in FILE and return it as a string.

Execute the Elisp code EXPR in Emacs batch mode and return output.

Add a numerically increasing suffix to tests of the same name. This fixes test errors of the pattern "Test TEST_NAME redefined".

Compile all files in DIR to native code.

If native code is not supported, compile to bytecode instead.

Disable byte compilation for FILE. If NATIVE?, only disable native compilation.

Generate autoloads for Emacs package NAME placed in DIRECTORY.

Build the given font package, applying all of PHASES in order.