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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2023 Ludovic Courtès <ludo@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/>.
(define-module (guix import test)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (web uri)
#:use-module (guix packages)
#:use-module (guix upstream)
#:use-module ((guix utils) #:select (version-prefix?))
#:use-module (ice-9 vlist)
#:use-module (ice-9 match)
#:export (%test-updater))
;;; Commentary:
;;;
;;; This module defines a pseudo updater whose sole purpose is to allow
;;; testing of the whole 'guix refresh' command.
;;;
;;; Code:
(define test-target-version
;; VHash that maps package names to version/URL tuples.
(make-parameter
(or (and=> (getenv "GUIX_TEST_UPDATER_TARGETS")
(lambda (str)
(alist->vhash (call-with-input-string str read))))
vlist-null)))
(define (available-updates package)
"Return the list of available <upstream-source> records for PACKAGE."
(vhash-fold* (lambda (version+updates result)
(match version+updates
((version (updates ...))
(if (version-prefix? version
(package-version package))
(append (map (match-lambda
((version url)
(upstream-source
(package (package-name package))
(version version)
(urls (list url)))))
updates)
result)
result))))
'()
(package-name package)
(test-target-version)))
(define (test-package? package)
"Return true if PACKAGE has pseudo updates available."
(and (not (vlist-null? (test-target-version))) ;cheap test
(pair? (available-updates package))))
(define* (import-release package #:key (version #f))
"Return the <upstream-source> record denoting either the latest version of
PACKAGE or VERSION."
(match (available-updates package)
(() #f)
((sources ...)
(if version
(find (lambda (source)
(string=? (upstream-source-version source)
version))
sources)
(first sources)))))
(define %test-updater
(upstream-updater
(name 'test)
(description "Pseudo updater for testing purposes.")
(pred test-package?)
(import import-release)))
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