Wait for TIMEOUT seconds or until the screen text on MARIONETTE matches PREDICATE, whichever comes first. Raise an error when TIMEOUT is exceeded. The error contains the recognized text along the preserved file name of the screen dump, which is relative to the current working directory. If PRE-ACTION is provided, it should be a thunk to call before each OCR attempt. Likewise for POST-ACTION, except it runs at the end of a successful OCR.

Type STR on MARIONETTE's keyboard, using the KEYSTROKES alist to map characters to actual keystrokes.

Evaluate EXP in MARIONETTE's backdoor REPL. Return the result.

Wait for up to TIMEOUT seconds for FILE-NAME, a Unix domain socket, to accept connections in MARIONETTE. Raise an error on failure.

Whether NAMES are provisioned in the current OBJECT environment.

Listen to ADDRESS, an address returned by 'make-socket-address', and wait for a secret service client to send secrets. Write them to the file system. Return the list of files installed on success, and #f if TIMEOUT seconds passed without receiving any files or if some other failure occurred.

Copy all files under SECRET-ROOT by connecting to secret-service listening at ADDRESS, an address as returned by 'make-socket-address'. If connection fails, sleep 1s and retry RETRY times; once connected, wait for at most HANDSHAKE-TIMEOUT seconds for handshake to complete. Return #f on failure.

This is a variant of 'fork+exec-command' procedure, that joins the namespaces of process PID beforehand. If there is no support for containers, on Hurd systems for instance, fallback to direct forking.

Register Cuirass jobs.

Return a Cuirass job called NAME and describing DRV.

MAX-SILENT-TIME and TIMEOUT are build options passed to the daemon when building the derivation.

Return the job for IMAGE on SYSTEM. If NAME is passed, use it as job name, otherwise use the IMAGE name.

Return the systems list from ARGUMENTS.