[bug#32011] [PATCH] gnu: Add ddcutil.

[bug#32011] [PATCH] gnu: Add ddcutil.

[Tobias Geerinckx-Rice]

* gnu/packages/linux.scm (ddcutil): New public variable.
---

Guix, Maxim,

Here's a little tool that might help some people control their monitors.

Kind regards,

T G-R

 gnu/packages/linux.scm | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 50f90e165..641a2fe2f 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -675,6 +675,48 @@ The Discordian calendar was made popular by the \"Illuminatus!\" trilogy
 by Robert Shea and Robert Anton Wilson.")
     (license license:public-domain)))
 
+(define-public ddcutil
+  (package
+    (name "ddcutil")
+    (version "0.9.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://www.ddcutil.com/tarballs/"
+                           name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1b4bm3zhk5vnad6fxf0mn8nrlj3fngifl7nzxgxw0n56hlv7ccv0"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("eudev" ,eudev)
+       ("glib" ,glib)
+       ("libdrm" ,libdrm)               ; enhanced diagnostics
+       ("libusb" ,libusb)               ; support USB monitors
+       ("libx11" ,libx11)               ; enhanced diagnostics
+       ("libxrandr" ,libxrandr)
+       ("zlib" ,zlib)))
+    (home-page "https://www.ddcutil.com/")
+    (synopsis "Control external monitor settings")
+    (description
+     "ddcutil can query and modify most external monitors' settings, such as
+brightness, colour levels, and input sources.  Generally speaking, any setting
+that can be changed by pressing buttons on the monitor can be modified by
+ddcutil.
+
+ddcutil communicates directly with monitors implementing the Monitor Control
+Command Set (@dfn{MCCS}).  It usually does so through the the Display Data
+Channel Command Interface (@dfn{DDC/CI}) protocol on the I2C bus, but can also
+communicate over USB as per the USB Monitor Control Class Specification.
+
+One particular use case is in colour profile management.  Monitor calibration
+is relative to the monitor colour settings currently in effect, e.g. red gain.
+ddcutil allows colour-related settings to be saved at the time a monitor is
+calibrated, and restored when the calibration is applied.")
+    (license (list license:bsd-3        ; FindDDCUtil.cmake
+                   license:gpl2+))))    ; everything else
+
 (define-public procps
   (package
     (name "procps")
-- 
2.16.2

[bug#32011] [PATCH] gnu: Add ddcutil.

[Ludovic Courtès]

Tobias Geerinckx-Rice <me@tobias.gr> skribis:

> * gnu/packages/linux.scm (ddcutil): New public variable.

LGTM, and looks like a useful tool!

Note that if this does not rely (directly or indirectly) on
functionality specific to the kernel Linux, it can go elsewhere.

Thanks,
Ludo’.

[bug#32011] [PATCH] gnu: Add ddcutil.

[Maxim Cournoyer]

Hello,

I've been using this for quite some times, it works very well!
I don't know if it relies on Linux specifics, the project only state it
is a "Linux utility", and I couldn't find it packaged on other systems
such as FreeBSD, according to repology.org.

Could someone with the rights please merge it in?

Thank you Tobias!

Maxim

[bug#32011] [PATCH] gnu: Add ddcutil.

[Tobias Geerinckx-Rice]

Maxim,

Maxim Cournoyer wrote:
> Hello,
>
> I've been using this for quite some times, it works very well!

\o/

> I don't know if it relies on Linux specifics, the project only 
> state it
> is a "Linux utility", and I couldn't find it packaged on other 
> systems
> such as FreeBSD, according to repology.org.

It probably is. My point was more that many 'modern' packages are, 
either by design or due to lack of developer time or effort, and 
we don't throw them all into linux.scm. Much like how e.g. Borg 
isn't in python.scm. Does that make sense?

> Could someone with the rights please merge it in?

Whoops. Thanks for the reminder!

*Unfurls scroll*

It's on my to-do list...

Kind regards,

T G-R

[bug#32011] [PATCH] gnu: Add ddcutil.

[Tobias Geerinckx-Rice]

Tobias Geerinckx-Rice wrote:
> It probably is. My point was more that many 'modern' packages 
> are
> [Linux-only]


...which was in bug #32488, apparently[0], which is not this bug, 
but the point's the same.

Kind regards,

T G-R

[0]: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=32488#8

bug#32011: [PATCH] gnu: Add ddcutil.

[Tobias Geerinckx-Rice]

Guix, Maxim,

Maxim Cournoyer wrote:
> Could someone with the rights please merge it in?

Done in aadd1d241cc9891a857dda9a5cf8389673b3c76c!

Kind regards,

T G-R

[bug#32011] [PATCH] gnu: Add ddcutil.

[Maxim Cournoyer]

Tobias Geerinckx-Rice <me@tobias.gr> writes:

> Guix, Maxim,
>
> Maxim Cournoyer wrote:
>> Could someone with the rights please merge it in?
>
> Done in aadd1d241cc9891a857dda9a5cf8389673b3c76c!
>
> Kind regards,
>
> T G-R

Thanks again, Tobias :)

Maxim