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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2022 Hilton Chain <hako@ultrarare.space>
;;;
;;; This file is not part of GNU Guix.
;;;
;;; This program 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.
;;;
;;; This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
(define-module (nongnu services nvidia)
#:use-module (gnu packages)
#:use-module (gnu packages linux)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services linux)
#:use-module (gnu services shepherd)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (nongnu packages nvidia)
#:export (nvidia-configuration
nvidia-configuration?
nvidia-configuration-record?
nvidia-service-type))
(define-record-type* <nvidia-configuration>
nvidia-configuration make-nvidia-configuration
nvidia-configuration?
(nvidia-driver nvidia-configuration-nvidia-driver
(default (list nvidia-driver))) ; list of file-like
(nvidia-firmware nvidia-configuration-nvidia-firmware
(default (list nvidia-firmware))) ; list of file-like
(nvidia-module nvidia-configuration-nvidia-module
(default (list nvidia-module))) ; list of file-like
(modules nvidia-configuration-modules
(default (list "nvidia-uvm")))) ; list of string
(define (nvidia-shepherd-service config)
(list (shepherd-service
(documentation "Unload nvidia-uvm module on powering off.")
(provision '(nvidia))
(requirement '(user-processes))
(start #~(const #t))
(stop #~(lambda _
(let ((rmmod #$(file-append kmod "/bin/rmmod")))
(zero? (system* rmmod "nvidia-uvm"))))))))
(define nvidia-service-type
(service-type
(name 'nvidia)
(extensions
(list (service-extension shepherd-root-service-type
nvidia-shepherd-service)
(service-extension udev-service-type
nvidia-configuration-nvidia-driver)
(service-extension firmware-service-type
nvidia-configuration-nvidia-firmware)
(service-extension linux-loadable-module-service-type
nvidia-configuration-nvidia-module)
(service-extension kernel-module-loader-service-type
nvidia-configuration-modules)))
(default-value (nvidia-configuration))
(description "Load NVIDIA modules.")))
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