Tmux : Add separate modules.

module/common/Package.nix

@@ -37,5 +37,5 @@
 	];
 
 	# Special packages.
-	programs.adb.enable = true;
+	programs.adb.enable    = true;
 }

module/common/Tmux.nix

@@ -1,6 +1,9 @@
-{ pkgs, ... }: {
+{ pkgs, ... }: let
+	tmux_script = pkgs.writeShellScriptBin "tmux_script" (builtins.readFile ./tmux/tmux_script.sh);
+in {
 	programs.tmux = {
 		enable = true;
 		extraConfig = builtins.readFile ./tmux/tmux.conf;
 	};
+	environment.systemPackages = [ tmux_script ];
 }

module/common/tmux/tmux.conf

@@ -71,7 +71,7 @@ set -g status-style "bg=#3c3836 fg=#a89984"
 set -g status-left "#[bold,bg=#a89984,fg=#282828] #H-#S #(count=$(tmux list-clients -t #S | wc -l); [ ${count} -gt 1 ] && echo (${count}) )#[bg=#3c3836,fg=#a89984]"
 set -g status-left-length  50
 set -g status-right-length 50
-set -g status-right " #(head -c -1 /sys/class/power_supply/BAT*/capacity 2> /dev/null && echo -n '% ') %Y-%m-%d #[fg=#a89984]#[bold,bg=#a89984,fg=#282828] %H:%M "
+set -g status-right " #(tmux_script battery) %Y-%m-%d #[fg=#a89984]#[bold,bg=#a89984,fg=#282828] %H:%M "
 
 set-window-option -g window-status-separator ""
 

module/common/tmux/tmux_script.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+action="${1}"
+
+function _tmux_battery() {
+	local IFS=$'\n'
+
+	local batteries=($(ls /sys/class/power_supply/ | grep ^BAT[0-9]$))
+	[[ "${batteries}" = "" ]] && return 1
+
+	local battery="/sys/class/power_supply/${batteries[0]}"
+	local level=$(cat ${battery}/capacity)
+	local status=$(cat ${battery}/status)
+	local is_charging=false
+	[[ "${status}" = "Charging" ]] && is_charging=true
+
+	local icon
+
+	if ((level>=60))
+	then
+		icon="󱊣"
+	elif ((level>=40))
+	then
+		icon="󱊢"
+	elif ((level>=20))
+	then
+		icon="󱊡"
+	else
+		icon="󰂎"
+	fi
+
+	echo -n " ${level} ${icon}"
+	${is_charging} && echo -n "󱐋"
+	echo -n " "
+}
+
+case ${action} in
+	"battery")
+		_tmux_battery
+		;;
+	"*")
+		;;
+esac