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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2018, 2019 Clément Lassieur <clement@lassieur.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 file defines build jobs for the Hydra continuation integration
;;; tool.
;;;
(use-modules (guix inferior) (guix channels)
(guix)
(guix ui)
(srfi srfi-1)
(ice-9 match))
;; XXX: Debugging hack: since `hydra-eval-guile-jobs' redirects the output
;; port to the bit bucket, let us write to the error port instead.
(setvbuf (current-error-port) 'line)
(set-current-output-port (current-error-port))
(define (find-current-checkout arguments)
"Find the first checkout of ARGUMENTS that provided the current file.
Return #f if no such checkout is found."
(let ((current-root
(canonicalize-path
(string-append (dirname (current-filename)) "/../.."))))
(find (lambda (argument)
(and=> (assq-ref argument 'file-name)
(lambda (name)
(string=? name current-root)))) arguments)))
(define (hydra-jobs store arguments)
"Return a list of jobs where each job is a NAME/THUNK pair."
(define checkout
(find-current-checkout arguments))
(define commit
(assq-ref checkout 'revision))
(define source
(assq-ref checkout 'file-name))
(define instance
(checkout->channel-instance source #:commit commit))
(define derivation
;; Compute the derivation of Guix for COMMIT.
(run-with-store store
(channel-instances->derivation (list instance))))
(show-what-to-build store (list derivation))
(build-derivations store (list derivation))
;; Open an inferior for the just-built Guix.
(let ((inferior (open-inferior (derivation->output-path derivation))))
(inferior-eval '(use-modules (gnu ci) (ice-9 match)) inferior)
(map (match-lambda
((name . fields)
;; Hydra expects a thunk, so here it is.
(cons name (lambda () fields))))
(inferior-eval-with-store
inferior store
`(lambda (store)
(map (match-lambda
((name . thunk)
(cons name (thunk))))
(hydra-jobs store '((superior-guix-checkout . ,checkout)
,@arguments))))))))