tried to get tmux to work. Didnt work

packages/default.nix

@@ -12,6 +12,7 @@
     ./kitty
     ./rofi
     ./alacritty
+    # ./tmux
     # ./mako
 #    ./qutebrowser
     ./hyprland

packages/nvim/default.nix

@@ -57,6 +57,7 @@ programs.neovim.plugins = [
     ".config/nvim/lua/plugins/tiny-inline-diagnostic.lua".source = ./lua/plugins/tiny-inline-diagnostic.lua;
     ".config/nvim/lua/plugins/conform.lua".source = ./lua/plugins/conform.lua;
     ".config/nvim/lua/plugins/go.lua".source = ./lua/plugins/go.lua;
+    # ".config/nvim/lua/plugins/nvim-tmux-navigation.lua".source = ./lua/plugins/nvim-tmux-navigation.lua;
 
    }
   ];

packages/nvim/lua/plugins/nvim-tmux-navigation.lua

@@ -0,0 +1,17 @@
+return { 'alexghergh/nvim-tmux-navigation', config = function()
+
+    local nvim_tmux_nav = require('nvim-tmux-navigation')
+
+    nvim_tmux_nav.setup {
+        disable_when_zoomed = true -- defaults to false
+    }
+
+    vim.keymap.set('n', "<C-h>", nvim_tmux_nav.NvimTmuxNavigateLeft)
+    vim.keymap.set('n', "<C-j>", nvim_tmux_nav.NvimTmuxNavigateDown)
+    vim.keymap.set('n', "<C-k>", nvim_tmux_nav.NvimTmuxNavigateUp)
+    vim.keymap.set('n', "<C-l>", nvim_tmux_nav.NvimTmuxNavigateRight)
+    vim.keymap.set('n', "<C-\\>", nvim_tmux_nav.NvimTmuxNavigateLastActive)
+    vim.keymap.set('n', "<C-Space>", nvim_tmux_nav.NvimTmuxNavigateNext)
+
+end
+}

packages/tmux/default.nix

@@ -5,10 +5,18 @@
 
  programs.tmux = {
    enable = true;
+    terminal = "tmux-256color";
+    disableConfirmationPrompt = true;
    extraConfig = ''
-set-option -sa terminal-overrides ",xterm*:Tc"
-set -g @catppuccin_flavor 'mocha'
-set -g @catppuccin_window_status_style "rounded"
+# set-option -sa terminal-overrides ",xterm*:Tc"
+#  set -g @catppuccin_flavor 'mocha'
+#  set -g @catppuccin_window_status_style "rounded"
+#       set -g default-terminal "xterm-256color"
+#       set -ga terminal-overrides ",*256col*:Tc"
+#       set -ga terminal-overrides '*:Ss=\E[%p1%d q:Se=\E[ q'
+#       set-environment -g COLORTERM "truecolor"
+#
+# run-shell ${pkgs.tmuxPlugins.catppuccin}/share/tmux-plugins/catppuccin/catppuccin.tmux
 
 set -g base-index 1
 set -g pane-base-index 1
@@ -18,17 +26,51 @@ set-option -g renumber-windows on
 bind '"' split-window -v -c "#{pane_current_path}"
 bind % split-window -h -c "#{pane_current_path}"
 
-unbind C-b
-set -g prefix C-Space
-bind C-Space send-prefix
 set -g mouse on
 
 bind -n M-H previous-window
 bind -n M-L next-window
+
+
+
+# Smart pane switching with awareness of Vim splits.
+# See: https://github.com/christoomey/vim-tmux-navigator
+
+# decide whether we're in a Vim process
+is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
+    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
+
+bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h' 'select-pane -L'
+bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j' 'select-pane -D'
+bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k' 'select-pane -U'
+bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l' 'select-pane -R'
+
+tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
+
+if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
+    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
+if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
+    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"
+
+bind-key -n 'C-Space' if-shell "$is_vim" 'send-keys C-Space' 'select-pane -t:.+'
+
+bind-key -T copy-mode-vi 'C-h' select-pane -L
+bind-key -T copy-mode-vi 'C-j' select-pane -D
+bind-key -T copy-mode-vi 'C-k' select-pane -U
+bind-key -T copy-mode-vi 'C-l' select-pane -R
+bind-key -T copy-mode-vi 'C-\' select-pane -l
+bind-key -T copy-mode-vi 'C-Space' select-pane -t:.+
    '';
 
-   plugins = [
-    pkgs.tmuxPlugins.catppuccin
+   plugins = with pkgs.tmuxPlugins; [
+      catppuccin {
+        plugin = catppuccin;
+        extraConfig = ''
+        set -g @plugin 'catppuccin/tmux#2.1.3'
+         set -g @catppuccin_window_status_style "rounded"
+         set -g @catppuccin_flavor 'mocha'
+        '';
+      }
 #    pkgs.tmuxPlugins.vim-tmux-navigator
    ];
  };