Add tmux terminal setting

system/shared/shared-configuration.nix

@@ -55,7 +55,7 @@
 
   nixpkgs.config.allowUnfree = true;
 
-  programs.ssh {
+  programs.ssh = {
     startAgent = true;
   };
 

users/tsv/tmux.conf

@@ -8,6 +8,8 @@ set-option -g prefix C-o
 unbind-key C-b
 
 set -g default-terminal "tmux-256color"
+set -as terminal-features ",xterm-256color:RGB"
+
 set -g history-limit 10000
 
 set -g history-file ~/.dotfiles/.tmux_history