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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016-2018, 2020, 2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2021 Mathieu Othacehe <othacehe@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
;;; This program replicates the behavior of Cuirass's 'evaluate' process.
;;; It displays the evaluated jobs on the standard output.
(use-modules (guix channels)
(guix derivations)
(guix git-download)
(guix inferior)
(guix packages)
(guix store)
(guix ui)
((guix ui) #:select (build-notifier))
(ice-9 match)
(ice-9 threads))
(define %top-srcdir
(and=> (assq-ref (current-source-location) 'filename)
(lambda (file)
(canonicalize-path
(string-append (dirname file) "/../..")))))
(match (command-line)
((command directory)
(let ((real-build-things build-things))
(with-store store
;; Make sure we don't resort to substitutes.
(set-build-options store
#:use-substitutes? #f
#:substitute-urls '())
;; The evaluation of Guix itself requires building a "trampoline"
;; program, and possibly everything it depends on. Thus, allow builds
;; but print a notification.
(with-build-handler (build-notifier #:use-substitutes? #f)
;; Add %TOP-SRCDIR to the store with a proper Git predicate so we
;; work from a clean checkout.
(let ((source (add-to-store store "guix-source" #t
"sha256" %top-srcdir
#:select? (git-predicate %top-srcdir))))
(define instances
(list (checkout->channel-instance source)))
(define channels
(map channel-instance-channel instances))
(define derivation
;; Compute the derivation of Guix for COMMIT.
(run-with-store store
(channel-instances->derivation instances)))
;; TODO: Remove 'show-what-to-build' call when Cuirass' 'evaluate'
;; scripts uses 'with-build-handler'.
(show-what-to-build store (list derivation))
(build-derivations store (list derivation))
;; Evaluate jobs on a per-system basis for two reasons. It speeds
;; up the evaluation speed as the evaluations can be performed
;; concurrently. It also decreases the amount of memory needed per
;; evaluation process.
;;
;; Fork inferior processes upfront before we have created any
;; threads.
(let ((inferiors (map (lambda _
(open-inferior (derivation->output-path derivation)))
%cuirass-supported-systems)))
(n-par-for-each
(min (length %cuirass-supported-systems)
(current-processor-count))
(lambda (system inferior)
(with-store store
(let ((channels (map channel-instance->sexp instances)))
(inferior-eval '(use-modules (gnu ci)) inferior)
(let ((jobs
(inferior-eval-with-store
inferior store
`(lambda (store)
(cuirass-jobs store
'((subset . all)
(systems . ,(list system))
(channels . ,channels))))))
(file
(string-append directory "/jobs-" system ".scm")))
(close-inferior inferior)
(call-with-output-file file
(lambda (port)
(write jobs port)))))))
%cuirass-supported-systems
inferiors)))))))
(x
(format (current-error-port) "Wrong command: ~a~%." x)
(exit 1)))
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