From a082af65ad53e4703b9540647aff9a716fdda86b Mon Sep 17 00:00:00 2001 From: Timo Wilken Date: Tue, 12 Sep 2023 21:16:20 +0200 Subject: Factor out common desktop services Most of the code for setting desktop layouts is common between machines. Also, make the blueman-applet service reusable. --- tw/services/desktop.scm | 130 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 tw/services/desktop.scm (limited to 'tw/services/desktop.scm') diff --git a/tw/services/desktop.scm b/tw/services/desktop.scm new file mode 100644 index 00000000..b0bb4e8a --- /dev/null +++ b/tw/services/desktop.scm @@ -0,0 +1,130 @@ +(define-module (tw services desktop) + #:use-module (gnu) + #:use-module (gnu home services) + #:use-module (gnu home services shepherd) + #:use-module ((gnu packages networking) #:select (blueman)) + #:use-module ((gnu packages wm) #:select (polybar)) + #:use-module ((gnu packages xdisorg) #:select (numlockx hsetroot)) + #:use-module ((gnu packages xorg) #:select (xrandr xset)) + #:use-module (gnu services configuration) + #:use-module (guix gexp) + #:use-module (guix packages) + #:use-module ((guix records) #:select (match-record)) + #:use-module (srfi srfi-1) + #:use-module ((tw theme) #:select (catppuccin-polybar)) + #:export (home-desktop-layout-configuration + home-monitor-configuration + home-desktop-layout-service-type + home-blueman-service-type)) + + +;; Monitor layout and polybars + +(define (list-of-strings? thing) + (and (list? thing) (every string? thing))) + +(define-configuration/no-serialization home-monitor-configuration + (name string "The monitor's name in X11.") + (xrandr-options (list-of-strings '()) "Options to pass to xrandr to +configure this monitor.")) + +(define (list-of-monitors? thing) + (and (list? thing) (every home-monitor-configuration? thing))) + +(define-configuration/no-serialization home-desktop-layout-configuration + (desktop-background string "Path to an image that will be set as the desktop +background. An initial @code{~/} is replaced with $HOME/.") + (monitors list-of-monitors "List of monitor declarations to apply.")) + +(define (polybar-config monitors) + `(("polybar/config.ini" ,(local-file "files/polybar.ini")) + ("polybar/catppuccin.ini" ,catppuccin-polybar))) + +(define polybar-wrapper + (program-file "polybar-wrapper" + #~(begin + ;; This wrapper program checks that the monitor we want to start + ;; polybar on is actually connected. + (use-modules (ice-9 popen) + (ice-9 rdelim)) + (let* ((connected-str (string-append (getenv "POLYBAR_MONITOR") " connected")) + (xrandr (open-pipe* OPEN_READ #$(file-append xrandr "/bin/xrandr") "-q")) + (monitor-connected? + (let loop ((line (read-line xrandr))) + (cond + ((eof-object? line) #f) ; we didn't find our monitor connected + ((string-prefix? connected-str line) #t) ; the monitor we want is connected + (else (loop (read-line xrandr))))))) ; keep looking + (close-pipe xrandr) + (when monitor-connected? + (execl #$(file-append polybar "/bin/polybar"))))))) + +(define (polybar-service monitor) + (shepherd-service + (documentation (string-append "Polybar desktop bar for monitor " monitor ".")) + (provision (list (symbol-append 'polybar- (string->symbol monitor)))) + (requirement '(xorg-setup)) + (start #~(make-forkexec-constructor + (list #$polybar-wrapper) + #:environment-variables + (cons #$(string-append "POLYBAR_MONITOR=" monitor) + (default-environment-variables)))) + (stop #~(make-kill-destructor)))) + +(define (desktop-layout-services config) + (match-record config + (desktop-background monitors) + (cons* (shepherd-service + (documentation "Set up X displays on login.") + (provision '(xorg-setup)) + (one-shot? #t) + (start #~(lambda _ + (define (replace-home path) + (if (string-prefix? "~/" path) + (string-replace path (getenv "HOME") 0 1) + path)) + (system* #$(file-append numlockx "/bin/numlockx") "on") + ;; Turn off the monitors if there is no input for 10 minutes. + (system* #$(file-append xset "/bin/xset") "dpms" "600" "600" "600") + ;; TODO: may need one xrandr invocation per monitor; this is + ; ;what tw/home/cern.scm had before. + (system* #$(file-append xrandr "/bin/xrandr") + #$@(append-map (lambda (monitor) + (match-record monitor + (name xrandr-options) + `("--output" ,name ,@xrandr-options))) + monitors)) + ;; Set the desktop background picture. Hopefully doing this just after + ;; xrandr works and sets it for both screens. + (system* #$(file-append hsetroot "/bin/hsetroot") + "-cover" (replace-home #$desktop-background))))) + (map (compose polybar-service home-monitor-configuration-name) monitors)))) + +(define home-desktop-layout-service-type + (service-type + (name 'desktop-layout) + (extensions + (list (service-extension home-shepherd-service-type desktop-layout-services) + (service-extension home-xdg-configuration-files-service-type polybar-config))) + (description + "Configure the desktop background, monitor layout and polybar."))) + + +;; Blueman + +(define (blueman-services config) + (list (shepherd-service + (documentation "Blueman applet; provides a GUI for connection to bluetooth devices.") + (provision '(blueman-applet)) + (start #~(make-forkexec-constructor + (list #$(file-append blueman "/bin/blueman-applet")))) + (stop #~(make-kill-destructor))))) + +(define home-blueman-service-type + (service-type + (name 'blueman) + (default-value #f) + (extensions + (list (service-extension home-shepherd-service-type blueman-services))) + (description + "Run the Blueman applet for graphical Bluetooth control."))) -- cgit v1.2.3