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[bug#39308] [PATCH] gnu: Install the udev rules for light to its output.
From: |
Amin Bandali |
Subject: |
[bug#39308] [PATCH] gnu: Install the udev rules for light to its output. |
Date: |
Mon, 27 Jan 2020 12:54:33 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Please find v2 attached below, fixing my oversight of forgetting to
substitute in the correct paths for chgrp and chmod.
From 3f9beb0385c03d5c6d34cde76ad7bf2bc2e0c465 Mon Sep 17 00:00:00 2001
From: Amin Bandali <address@hidden>
Date: Mon, 27 Jan 2020 09:33:37 -0500
Subject: [PATCH v2] gnu: Install udev rules for light to allow sudo-less
invocations.
* gnu/packages/linux.scm (light): Substitute out the absolute paths of chgrp
and chmod in 90-backlight.rules, and install the rules file to the special
lib/udev/rules.d/ directory of the out output. This allows for any member of
the video group to set brightness using light without using sudo.
---
gnu/packages/linux.scm | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 9b0dfd8eb7..5162dfff18 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -5042,6 +5042,21 @@ monitoring tools for Linux. These include
@code{mpstat}, @code{iostat},
(base32 "0zrjipd392bzjvxx0rjrb0cgi0ix1d83fwgw1mcy8kc4d16cgyjg"))
(file-name (git-file-name name version))))
(build-system gnu-build-system)
+ (arguments
+ `(#:phases
+ (modify-phases %standard-phases
+ (add-after 'unpack 'patch-udev-rules-absolute-path-bins
+ (lambda* (#:key inputs #:allow-other-keys)
+ (substitute* "90-backlight.rules"
+ (("/bin/chgrp") (which "chgrp"))
+ (("/bin/chmod") (which "chmod")))
+ #t))
+ (add-after 'install 'install-udev-rules
+ (lambda* (#:key outputs #:allow-other-keys)
+ (let ((out (assoc-ref outputs "out")))
+ (install-file
+ "90-backlight.rules" (string-append out "/lib/udev/rules.d"))
+ #t))))))
(native-inputs
`(("autoconf" ,autoconf)
("automake" ,automake)))
--
2.25.0
The patch works fine for me after adding light to udev-service-type in
my system configuration, as suggested in the manual, like so:
(simple-service 'light-udev-rules udev-service-type (list light))
--
Amin Bandali
Free Software activist | GNU maintainer & webmaster
GPG: BE62 7373 8E61 6D6D 1B3A 08E8 A21A 0202 4881 6103
https://bandali.eu.org
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