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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020, 2021 Marius Bakke <marius@gnu.org>
;;; Copyright © 2023 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/>.
(define-module (gnu build icecat-extension)
#:use-module (guix gexp)
#:use-module (guix packages)
#:use-module (guix build-system trivial)
#:export (make-icecat-extension))
(define* (make-icecat-extension pkg #:optional (pkg-output "out"))
"Create an Icecat extension from package PKG and return a package that,
when installed, will make the extension contained in PKG available as an
Icecat browser extension. PKG-OUTPUT specifies which output of PKG to use."
(package
(inherit pkg)
(location (package-location pkg))
(name (string-append (package-name pkg) "-icecat"))
(native-inputs '())
(inputs '())
(propagated-inputs (package-propagated-inputs pkg))
(outputs '("out"))
(build-system trivial-build-system)
(arguments
(list
#:modules '((guix build utils))
#:builder
#~(begin
(use-modules (guix build utils))
(let* ((addon-id #$(assq-ref (package-properties pkg) 'addon-id))
(moz-app-id "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}")
(search-dir (string-append #$output "/lib/icecat/extensions/"
moz-app-id)))
;; Icecat's iterates over `search-dir` for directories. If a
;; directory's name is not a valid add-on ID, it is ignored. See
;; `DirectoryLocation::readAddons()` in XPIProvider.jsm.
;; This directory has to be a symlink, because Icecat's
;; `_readLinkFile(aFile)` calls `normalize()` only if `aFile` is a
;; symlink.
;; Normalizing is required because Icecat compares the add-on path
;; against its local database to know if there is an extension
;; update. We want the add-on path to be the package store path,
;; so that a path change is detected every time the package is
;; updated. See `updateExistingAddon()` in XPIDatabase.jsm, with
;; our patch `icecat-compare-paths.patch`.
;; We don't want the add-on path to be the profile store path,
;; which would change too often. We don't want the add-on path to
;; be hard-coded either because it would never change (but it
;; wouldn't make sense anyway).
(mkdir-p search-dir)
(symlink (in-vicinity (ungexp pkg pkg-output) addon-id)
(in-vicinity search-dir addon-id))))))))
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