[bug#53953] [PATCH v2] gnu: Add acpilight.

[Brice Waegeneire <brice@waegenei.re>]

* gnu/packages/linux.scm (acpilight): New variable.
---
Maxime,

Thanks for the review.  I should have re-read this old package more throughly,
I have fixed what you pointed out:
- using gexp in arguments field
- don't returning #t in phases
- adding coreutils-minimal to inputs

As for the odd make-flags, this is because of the uncanonical Makefile¹ of
acpilight, It don't build with an empty DESTDIR.

¹ https://gitlab.com/wavexx/acpilight/-/blob/master/Makefile

Cheers,
- Brice

 gnu/packages/linux.scm | 40 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index bcbaa2166d..fe88d9ad26 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -35,7 +35,7 @@
 ;;; Copyright © 2019 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
 ;;; Copyright © 2019, 2020, 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;; Copyright © 2019 Stefan Stefanović <stefanx2ovic@gmail.com>
-;;; Copyright © 2019, 2020, 2021 Brice Waegeneire <brice@waegenei.re>
+;;; Copyright © 2019-2022 Brice Waegeneire <brice@waegenei.re>
 ;;; Copyright © 2019 Kei Kebreau <kkebreau@posteo.net>
 ;;; Copyright © 2020, 2021 Oleg Pykhalov <go.wigust@gmail.com>
 ;;; Copyright © 2020 Pierre Neidhardt <mail@ambrevar.xyz>
@@ -8806,3 +8806,41 @@ (define-public libgpiod
     (license (list license:lgpl2.1+   ;; libgpiod
                    license:gpl2+      ;; gpio-tools
                    license:lgpl3+)))) ;; C++ bindings
+
+(define-public acpilight
+  (package
+    (name "acpilight")
+    (version "1.2")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://gitlab.com/wavexx/acpilight.git")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1r0r3nx6x6vkpal6vci0zaa1n9dfacypldf6k8fxg7919vzxdn1w"))))
+    (build-system gnu-build-system)
+    (arguments
+     (list #:tests? #f  ;no tests
+           #:make-flags #~(list "prefix="
+                                (string-append "DESTDIR=" #$output))
+           #:phases
+           #~(modify-phases %standard-phases
+               (delete 'configure)
+               (add-after 'unpack 'patch
+                 (lambda* (#:key inputs #:allow-other-keys)
+                   (substitute* "Makefile"
+                     (("udevadm") "true"))
+                   (substitute* "90-backlight.rules"
+                     (("/bin")
+                      (string-append (assoc-ref inputs "coreutils-minimal") "/bin"))))))))
+    (inputs
+     (list python coreutils-minimal))
+    (home-page "https://gitlab.com/wavexx/acpilight")
+    (synopsis "Backward-compatibile xbacklight replacement")
+    (description "acpilight is a backward-compatibile replacement for
+xbacklight that uses the ACPI interface to set the display
+brightness.  On modern laptops acpilight can control both display and
+keyboard backlight uniformly on either X11, the console or Wayland.")
+    (license license:gpl3+)))

base-commit: e641d707e1ec8de2bfc658dcd1757360300aa509
-- 
2.34.0