Add flock wrapper for running only one process

etc/skel/.config/waybar/config.jsonc

@@ -145,7 +145,7 @@
           "warning": 70,
           "critical": 90
           },
-    "on-click": "swaymsg exec \\$term_float btop"
+    "on-click": "swaymsg exec \\$flock \\$term_float btop"
     },
 
     "memory": {
@@ -155,7 +155,7 @@
           "warning": 70,
           "critical": 90
         },
-    "on-click": "swaymsg exec \\$term_float btop"
+    "on-click": "swaymsg exec \\$flock \\$term_float btop"
     
     },
 
@@ -174,7 +174,7 @@
        "tooltip-format-wifi": "{icon} {ifname} ({essid}): {ipaddr}",
        "tooltip-format-disconnected": "{icon} disconnected",
        "tooltip-format-disabled": "{icon} disabled",
-       "on-click": "swaymsg exec \\$term_float nmtui connect"
+       "on-click": "swaymsg exec \\$flock \\$term_float nmtui connect"
     },
 
     "bluetooth": {

etc/sway/variables

@@ -9,6 +9,9 @@ set $down j
 set $up k
 set $right l
 
+# flock wrapper for running only one process
+set $flock /usr/share/sway/scripts/flock.sh
+
 # Your preferred terminal emulator
 set $term alacritty
 set $term_cwd $term --working-directory "$(/usr/share/sway/scripts/swaycwd.sh 2>/dev/null || echo $HOME)"
@@ -24,7 +27,7 @@ set $menu rofi -show combi -combi-modi "drun,run" -terminal $term -ssh-command "
 set $bindsym bindsym --to-code
 
 # Bluetooth menu
-set $bluetooth $term_float bluetuith
+set $bluetooth $flock $term_float bluetuith
 
 # Volume notification
 set $volume_bar /usr/share/sway/scripts/volume-notify.sh

usr/share/sway/scripts/flock.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env sh
+HASH="$(echo "$@" | shasum | cut -f1 -d" " | cut -c1-7)"
+
+mkdir -p "$HOME/.local/state"
+
+flock --verbose -n "$HOME/.local/state/${HASH}.lock" "$@"