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services: xorg: Allow users to specify a list of resolutions.

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* gnu/services/xorg.scm (xorg-start-command): Add #:resolutions
  parameter and 'screen-section' procedure.  Use it.
* doc/guix.texi (X Window): Adjust accordingly.
This commit is contained in:
Ludovic Courtès 2014-11-06 23:54:27 +01:00
parent f703413e41
commit d2e59637e3
2 changed files with 33 additions and 4 deletions
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6
doc/guix.texi
View file

@ -3954,13 +3954,17 @@ password. When @var{auto-login?} is true, log in automatically as
@end deffn
@deffn {Monadic Procedure} xorg-start-command [#:guile] @
[#:drivers '()] [#:xorg-server @var{xorg-server}]
[#:drivers '()] [#:resolutions '()] [#:xorg-server @var{xorg-server}]
Return a derivation that builds a @var{guile} script to start the X server
from @var{xorg-server}. Usually the X server is started by a login manager.
@var{drivers} must be either the empty list, in which case Xorg chooses a
graphics driver automatically, or a list of driver names that will be tried in
this order---e.g., @code{("modesetting" "vesa")}.
Likewise, when @var{resolutions} is the empty list, Xorg chooses an
appropriate screen resolution; otherwise, it must be a list of
resolutions---e.g., @code{((1024 768) (640 480))}.
@end deffn
@node Setuid Programs

31
gnu/services/xorg.scm
View file

@ -31,6 +31,9 @@ (define-module (gnu services xorg)
#:use-module (guix gexp)
#:use-module (guix monads)
#:use-module (guix derivations)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (xorg-start-command
slim-service))
@ -43,13 +46,17 @@ (define-module (gnu services xorg)
(define* (xorg-start-command #:key
(guile (canonical-package guile-2.0))
(xorg-server xorg-server)
(drivers '()))
(drivers '()) (resolutions '()))
"Return a derivation that builds a @var{guile} script to start the X server
from @var{xorg-server}. Usually the X server is started by a login manager.
@var{drivers} must be either the empty list, in which case Xorg chooses a
graphics driver automatically, or a list of driver names that will be tried in
this order---e.g., @code{(\"modesetting\" \"vesa\")}."
this order---e.g., @code{(\"modesetting\" \"vesa\")}.
Likewise, when @var{resolutions} is the empty list, Xorg chooses an
appropriate screen resolution; otherwise, it must be a list of
resolutions---e.g., @code{((1024 768) (640 480))}."
(define (device-section driver)
(string-append "
@ -58,6 +65,21 @@ (define (device-section driver)
Driver \"" driver "\"
EndSection"))
(define (screen-section driver resolutions)
(string-append "
Section \"Screen\"
Identifier \"screen-" driver "\"
Device \"device-" driver "\"
SubSection \"Display\"
Modes "
(string-join (map (match-lambda
((x y)
(string-append "\"" (number->string x)
"x" (number->string y) "\"")))
resolutions)) "
EndSubSection
EndSection"))
(define (xserver.conf)
(text-file* "xserver.conf" "
Section \"Files\"
@ -82,7 +104,10 @@ (define (xserver.conf)
Option \"AllowMouseOpenFail\" \"on\"
EndSection
"
(string-join (map device-section drivers) "\n")))
(string-join (map device-section drivers) "\n")
(string-join (map (cut screen-section <> resolutions)
drivers)
"\n")))
(mlet %store-monad ((config (xserver.conf)))
(define script