add tmux module

modules/shell/tmux.nix

@@ -0,0 +1,57 @@
+#
+# Tmux
+#
+
+{ pkgs, ... }:
+
+{
+  programs = {
+    tmux = {
+      enable = true;
+      terminal = "xterm-256color";
+      newSession = true;
+      keyMode = "vi";
+      historyLimit = 10000;
+      clock24 = true;
+      shortcut = "h";
+      baseIndex = 1;
+      plugins = [ pkgs.tmuxPlugins.dracula ];
+      extraConfig = ''
+        set -g @dracula-plugins "cpu-usage ram-usage network-bandwidth time"
+        set -g mouse on
+        #set -g @dracula-show-powerline true
+        
+        # More friendly split pane
+        bind-key s split-window -h
+        bind-key v split-window -v
+        unbind '"'
+        unbind '%'
+        
+        # moving between windows with vim movement keys
+        bind m select-pane -L
+        bind n select-pane -D
+        bind e select-pane -U
+        bind i select-pane -R
+
+        # moving between windows with vim movement keys
+        bind -r C-m select-window -t :-
+        bind -r C-i select-window -t :+
+        
+        # Vim style X clipboard integration↲
+        bind-key -T copy-mode-vi 'v' send -X begin-selection
+        bind-key -T copy-mode-vi 'y' send-keys -X copy-pipe-and-cancel "xsel -i -p && xsel -o -p | xsel -i -b"
+        bind-key P run "xsel -o | tmux load-buffer - ; tmux paste-buffer"
+        
+        # resize panes with vim movement keys
+        bind -r M resize-pane -L 5
+        bind -r N resize-pane -D 5
+        bind -r E resize-pane -U 5
+        bind -r I resize-pane -R 5
+        
+        # bindings for pane joining and breaking
+        bind < split-window -h \; choose-window 'kill-pane ; join-pane -hs %%'
+        bind > break-pane -d
+      '';
+    };
+  };
+}