home: Add tmux

users/simon/base.nix

@@ -39,6 +39,7 @@ in
       ./modules/mpd.nix
       ./modules/neovim.nix
       ./modules/sway.nix
+      ./modules/tmux.nix
       ./modules/vdirsyncer.nix
       ./modules/xcompose.nix
       ./modules/xdg.nix

users/simon/modules/tmux.nix

@@ -0,0 +1,28 @@
+{
+  programs.tmux = {
+    enable = true;
+    terminal = "screen-256color";
+    escapeTime = 0;
+    aggressiveResize = true;
+    baseIndex = 1;
+    extraConfig = ''
+      # screen behaviour
+      unbind C-b
+      set -g prefix C-a
+      unbind C-a
+      bind C-a send-prefix
+
+      # more ergonomic splitting
+      unbind |
+      bind | split-window -h
+
+      unbind -
+      bind - split-window -v
+
+      # HOWTO copy: PREFIX+[, space, select text, enter, PREFIX+]
+
+      # disable mouse (prevents simple copying)
+      set -g mouse off
+    '';
+  };
+}