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#!/usr/bin/env -S guix repl --
!# ;-*- mode: scheme; -*-
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2025 Maxim Cournoyer <maxim@guixotic.coop>
;;;
;;; 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/>.
;;; Commentary:
;;;
;;; This is a wrapper of 'guix refresh' that refreshes all the GNOME core
;;; packages listed in their release engineering (releng) list to their stable
;;; version. Set the PARTIAL_VERSIONS environment variable to update to
;;; compatible versions instead of exact ones. The GNOME_RELENG_VERSIONS_URI
;;; environment variable can also point to a different URL or file, for
;;; example to update to a past GNOME version. The script can be invoked as:
;;;
;;; $ ./pre-inst-env etc/teams/gnome/gnome-core-refresh --update
;;; or
;;; $ ./pre-inst-env env PARTIAL_VERSIONS=1 etc/teams/gnome/gnome-core-refresh -u
;;;
;;; Code:
(use-modules (gnu packages)
(guix diagnostics)
(guix http-client)
(guix scripts refresh)
(guix utils)
(ice-9 format)
(ice-9 exceptions)
(ice-9 match)
(ice-9 peg)
(ice-9 textual-ports)
(srfi srfi-1))
(define %gnome-releng-versions-uri
(make-parameter
(or (getenv "GNOME_RELENG_VERSIONS_URI")
"https://gitlab.gnome.org/GNOME/releng/-/raw/master/tools/versions-50")))
(define (fetch-releng-content)
"Return a string corresponding to the content of the %GNOME-RELENG-VERSIONS-URI
file."
(call-with-port (http-fetch/cached (%gnome-releng-versions-uri))
get-string-all))
(define-exception-type &releng-parser-error &error
make-releng-parser-error releng-parser-error?)
(define-peg-string-patterns "\
releng <-- (comment / entry)* !.
entry <-- suite C name C version C subdir NL
suite <-- text
name <-- text
version <-- text
subdir <-- text?
text <- (!NL !C .)*
comment < '#' (!NL .)* NL
C < ':'
NL < '\n'")
(define %names
'(("adwaita-fonts" . "font-adwaita")
("glycin" . "libglycin")
("json-glib" . "json-glib-minimal")
("libcloudproviders" . "libcloudproviders-minimal")
("libsoup" . "libsoup-minimal")
("pygobject" . "python-pygobject")
("pyatspi" . "python-pyatspi")))
(define (make-name-spec name version)
"Return a package name specification given its NAME and VERSION. This can
be used when the package NAME need to be transformed based on its VERSION."
(match (list name (version-major version))
(("gcr" "3")
"gcr@3")
(("gtksourceview" "4")
"gtksourceview@4")
(("gtk" "3")
"gtk+")
((name _)
(or (assoc-ref %names name) name))))
(define (parse-releng data)
"Return the complete parse tree for DATA, a string representing the content of
a GNOME releng file."
(let ((tree (peg:tree (match-pattern releng data))))
(match tree
(#f (raise-exception (make-releng-parser-error)))
(_ tree))))
(define (check-package-name name)
"Return #t if a package corresponding to NAME exists, else #f."
(catch 'quit
(lambda ()
(parameterize ((guix-warning-port (%make-void-port "w")))
(specification->package name)
#t))
(lambda _
(format (current-error-port) "TODO: package ~a~%" name)
#f)))
(define* (releng-tree->update-specs tree #:key (partial-versions?
(getenv "PARTIAL_VERSIONS")))
"Take TREE and return a list of package specifications. If
PARTIAL-VERSIONS? is true, the least significant digit in version is
stripped and the version is prefixed with the '~' character, so that 'guix
refresh' can automatically find the newest compatible version."
(match tree
(('releng ('entry ('suite "core") ('name name) ('version version) _) ...)
(filter-map (lambda (name version)
(let* ((name (make-name-spec name version)))
(and (check-package-name name)
(if partial-versions?
(let* ((parts (string-split version #\.))
(num-parts (length parts)))
(if (> num-parts 1)
(format #f "~a=~~~a" name
(version-prefix version
(1- num-parts)))
(format #f "~a=~a" name version)))
(format #f "~a=~a" name version)))))
name version))))
(apply guix-refresh (append (cdr (command-line))
(releng-tree->update-specs
(parse-releng (fetch-releng-content)))))
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