swaync: remove unused systemd integrations

it's all s6 now

hosts/common/programs/swaynotificationcenter/buttons.nix

@@ -8,11 +8,11 @@
 
 { pkgs }:
 let
-  serviceButton = svcType: name: label: {
+  serviceButton = name: label: {
     inherit label;
     type = "toggle";
-    command = "swaync-service-dispatcher toggle ${svcType} ${name}";
+    command = "swaync-service-dispatcher toggle ${name}";
-    update-command = "swaync-service-dispatcher print ${svcType} ${name}";
+    update-command = "swaync-service-dispatcher print ${name}";
     active = true;
   };
 in
@@ -46,14 +46,14 @@ in
   #   🇲 𝐌  ₘ  m̄  m⃞  m̋⃞  M⃞  󰫺 󰬔
   # - discord
   #     󰙯 󰊴 󰺷 🎮
-  gps = serviceButton "s6" "eg25-control-gps" "";
+  gps = serviceButton "eg25-control-gps" "";
-  cell-modem = serviceButton "s6" "eg25-control-powered" "󰺐";
+  cell-modem = serviceButton "eg25-control-powered" "󰺐";
 
-  gnome-calls = serviceButton "s6" "gnome-calls" "";
+  gnome-calls = serviceButton "gnome-calls" "";
-  geary = serviceButton "s6" "geary" "";
+  geary = serviceButton "geary" "";
-  abaddon = serviceButton "s6" "abaddon" " ";
+  abaddon = serviceButton "abaddon" " ";
-  dissent = serviceButton "s6" "dissent" " ";
+  dissent = serviceButton "dissent" " ";
-  signal-desktop = serviceButton "s6" "signal-desktop" "󰭻";
+  signal-desktop = serviceButton "signal-desktop" "󰭻";
-  dino = serviceButton "s6" "dino" "󰟿";
+  dino = serviceButton "dino" "󰟿";
-  fractal = serviceButton "s6" "fractal" "[m]";
+  fractal = serviceButton "fractal" "[m]";
 }

hosts/common/programs/swaynotificationcenter/default.nix

@@ -10,7 +10,7 @@
 # configuration:
 # - defaults: /run/current-system/etc/profiles/per-user/colin/etc/xdg/swaync/
 # - `man 5 swaync`
-# - view document tree: `GTK_DEBUG=interactive swaync`  (`systemctl stop --user swaync` first)
+# - view document tree: `GTK_DEBUG=interactive swaync`  (`s6 stop swaync` first)
 # - examples:
 #   - thread: <https://github.com/ErikReider/SwayNotificationCenter/discussions/183>
 #   - buttons-grid and menubar: <https://gist.github.com/JannisPetschenka/fb00eec3efea9c7fff8c38a01ce5d507>
@@ -28,7 +28,6 @@ in
       pkgs = [
         "s6"
         "s6-rc"
-        "systemd"
       ];
     };
   };
@@ -62,7 +61,7 @@ in
       default = {};
     };
 
-    # prevent dbus from automatically activating swaync so i can manage it as a systemd service instead
+    # prevent dbus from automatically activating swaync so i can manage it as a service instead
     packageUnwrapped = pkgs.rmDbusServices (pkgs.swaynotificationcenter.overrideAttrs (upstream: {
       version = "0.10.1-unstable-2024-04-16";
       # toggling the panel on 0.10.1 sometimes causes toggle-buttons to toggle.
@@ -102,23 +101,6 @@ in
       "/sys/class/backlight"
       "/sys/devices"
     ];
-    sandbox.extraRuntimePaths = [
-      # systemd/private allows one to `systemctl --user {status,start,stop,...}`
-      # notably, it does *not* allow for `systemd-run` (that's dbus: org.freedesktop.systemd1.Manager.StartTransientUnit).
-      # that doesn't necessarily mean this is entirely safe against privilege escalation though.
-      # TODO: audit the safety of this systemd sandboxing.
-      # few alternatives:
-      # - superd
-      # - simply `xdg-open app://dino`, etc. `pkill` to stop, `pgrep` to query.
-      # - more robust: `xdg-open sane-service://start?service=dino`
-      #   - still need `pgrep` to query if it's running, or have the service mark a pid file
-      # - dbus activation for each app
-      "systemd/private"
-    ];
-    sandbox.extraConfig = [
-      # systemctl calls seem to require same pid namespace
-      "--sanebox-keep-namespace" "pid"
-    ];
 
     # glib/gio applications support many notification backends ("portal", "gtk", "freedesktop", ...).
     # swaync implements only the `org.freedesktop.Notifications` dbus interface ("freedesktop"/fdo).

hosts/common/programs/swaynotificationcenter/swaync-service-dispatcher

@@ -1,13 +1,12 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p s6 -p s6-rc -p systemd
+#!nix-shell -i bash -p s6 -p s6-rc
 
 # for default $PATH to take precedence over nix-shell PATH if invoked interactively,
 # otherwise we invoke a s6-rc which does not know where to find files.
 export PATH="/etc/profiles/per-user/$(whoami)/bin:/run/current-system/sw/bin:$PATH"
 
 action="$1"
-type="$2"
+service="$2"
-service="$3"
 
 log() {
   if [ -n "$SWAYNC_DEBUG" ]; then
@@ -16,38 +15,17 @@ log() {
 }
 
 checkActive() {
-  case "$type" in
+  # simulate a dry-run start. if no actions would be performed, then the service is up.
-    systemd)
+  # alternative is s6-svstat, but that doesn't support oneshots
-      systemctl is-active "$service.service" > /dev/null && echo true || echo false
+  test -z "$(s6-rc -n 0 -b start "$service")" && echo true || echo false
-      ;;
-    s6)
-      # simulate a dry-run start. if no actions would be performed, then the service is up.
-      # alternative is s6-svstat, but that doesn't support oneshots
-      test -z "$(s6-rc -n 0 -b start "$service")" && echo true || echo false
-      ;;
-  esac
 }
 startService() {
   log "startService: $service"
-  case "$type" in
+  s6-rc -b start "$service"
-    systemd)
-      /run/wrappers/bin/sudo systemctl start "$service"
-      ;;
-    s6)
-      s6-rc -b start "$service"
-      ;;
-  esac
 }
 stopService() {
   log "stopService: $service"
-  case "$type" in
+  s6-rc -b stop "$service"
-    systemd)
-      /run/wrappers/bin/sudo systemctl stop "$service"
-      ;;
-    s6)
-      s6-rc -b stop "$service"
-      ;;
-  esac
 }
 
 case "$action" in