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| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2022 Taiju HIGASHI <higashi@taiju.info>
;;;
;;; 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 home services fontutils)
#:use-module (gnu home services)
#:use-module (gnu packages fontutils)
#:use-module (gnu services configuration)
#:use-module (guix diagnostics)
#:use-module (guix gexp)
#:use-module (guix i18n)
#:use-module (guix records)
#:use-module (srfi srfi-1)
#:use-module (sxml simple)
#:use-module (ice-9 match)
#:export (home-fontconfig-service-type
home-fontconfig-configuration))
;;; Commentary:
;;;
;;; Services related to fonts. home-fontconfig service provides
;;; fontconfig configuration, which allows fc-* utilities to find
;;; fonts in Guix Home's profile and regenerates font cache on
;;; activation.
;;;
;;; Code:
(define (sxml->xml-string sxml)
"Serialize the sxml tree @var{tree} as XML. The output will be string."
(call-with-output-string
(lambda (port)
(sxml->xml sxml port))))
(define guix-home-font-dir "~/.guix-home/profile/share/fonts")
(define (string-list? value)
(and (pair? value) (every string? value)))
(define (serialize-string-list field-name value)
(sxml->xml-string
(map
(lambda (path) `(dir ,path))
(if (member guix-home-font-dir value)
value
(append (list guix-home-font-dir) value)))))
(define (serialize-string field-name value)
(define (serialize type value)
(sxml->xml-string
`(alias
(family ,type)
(prefer
(family ,value)))))
(match (list field-name value)
(('default-font-serif-family family)
(serialize 'serif family))
(('default-font-sans-serif-family family)
(serialize 'sans-serif family))
(('default-font-monospace-family family)
(serialize 'monospace family))))
(define-maybe string)
(define extra-config-list? list?)
(define-maybe extra-config-list)
(define (serialize-extra-config-list field-name value)
(sxml->xml-string
(map (match-lambda
((? pair? sxml) sxml)
((? string? xml) (xml->sxml xml))
(else
(raise (formatted-message
(G_ "'extra-config' type must be xml string or sxml list, was given: ~a")
value))))
value)))
(define-configuration home-fontconfig-configuration
(font-directories
(string-list (list guix-home-font-dir))
"The directory list that provides fonts.")
(default-font-serif-family
maybe-string
"The preffered default fonts of serif.")
(default-font-sans-serif-family
maybe-string
"The preffered default fonts of sans-serif.")
(default-font-monospace-family
maybe-string
"The preffered default fonts of monospace.")
(extra-config
maybe-extra-config-list
"Extra configuration values to append to the fonts.conf."))
(define (add-fontconfig-config-file user-config)
`(("fontconfig/fonts.conf"
,(mixed-text-file
"fonts.conf"
"<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>"
(serialize-configuration user-config home-fontconfig-configuration-fields)
"</fontconfig>\n"))))
(define (regenerate-font-cache-gexp _)
`(("profile/share/fonts"
,#~(system* #$(file-append fontconfig "/bin/fc-cache") "-fv"))))
(define home-fontconfig-service-type
(service-type (name 'home-fontconfig)
(extensions
(list (service-extension
home-xdg-configuration-files-service-type
add-fontconfig-config-file)
(service-extension
home-run-on-change-service-type
regenerate-font-cache-gexp)
(service-extension
home-profile-service-type
(const (list fontconfig)))))
(default-value (home-fontconfig-configuration))
(description
"Provides configuration file for fontconfig and make
fc-* utilities aware of font packages installed in Guix Home's profile.")))
|