tv lidControl: init

1 files changed, 45 insertions, 0 deletions

diff --git a/tv/3modules/lidControl.nix b/tv/3modules/lidControl.nix
new file mode 100644
index 000000000..6a48da18d
--- /dev/null
+++ b/tv/3modules/lidControl.nix
@@ -0,0 +1,45 @@
+with import ./lib;
+{ config, pkgs, ... }: {
+  options = {
+    tv.lidControl.enable = mkEnableOption "tv.lidControl";
+  };
+  config = let
+    cfg = config.tv.lidControl;
+  in mkIf cfg.enable {
+    services.acpid.enable = true;
+    services.acpid.lidEventCommands = /* sh */ ''
+      set -- $1
+
+      # usage: vt_is_xserver NUMBER
+      vt_is_xserver() {
+        ${pkgs.iproute}/bin/ss -lp src unix:/tmp/.X11-unix/X* |
+        ${pkgs.gnused}/bin/sed -n 's|.*/tmp/.X11-unix/X\([0-9]\+\)\>.*|\1|p' |
+        ${pkgs.gnugrep}/bin/grep -Fqx "$1"
+      }
+
+      console=$(${pkgs.kbd}/bin/fgconsole)
+
+      if vt_is_xserver "$console"; then
+        # usage: run_on_display COMMAND [ARG...]
+        run_on_display() {
+          owner=$(${pkgs.coreutils}/bin/stat -c %u /tmp/.X11-unix/X$console)
+          ${pkgs.systemd}/bin/systemd-run -GPq \
+              -E DISPLAY=:$console \
+              --uid=$owner \
+              "$@"
+        }
+        case $3 in
+          open)
+            run_on_display ${pkgs.xorg.xset}/bin/xset dpms force on
+            ;;
+          close)
+            run_on_display ${pkgs.xorg.xset}/bin/xset dpms force off
+            ;;
+        esac
+      fi
+    '';
+    services.logind.lidSwitch = "ignore";
+    services.logind.lidSwitchDocked = "ignore";
+    services.logind.lidSwitchExternalPower = "ignore";
+  };
+}