reorganize modules

modules/programs/tmux.nix

@@ -0,0 +1,123 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  inherit (pkgs) stdenv;
+
+  cfg = config.programs.tmux;
+
+  tmuxConfigs =
+    mapAttrsToList (n: v: "${v}") cfg.text;
+
+in {
+  options = {
+
+    programs.tmux.loginShell = mkOption {
+      type = types.path;
+      default = "$SHELL";
+      description = ''
+        Configure default login shell.
+      '';
+    };
+
+    programs.tmux.enableSensible = mkOption {
+      type = types.bool;
+      default = false;
+      example = true;
+      description = ''
+        Enable sensible configuration options.
+      '';
+    };
+
+    programs.tmux.enableMouse = mkOption {
+      type = types.bool;
+      default = false;
+      example = true;
+      description = ''
+        Enable mouse support.
+      '';
+    };
+
+    programs.tmux.enableVim = mkOption {
+      type = types.bool;
+      default = false;
+      example = true;
+      description = ''
+        Enable vim style keybindings for copy mode, and navigation of panes.
+      '';
+    };
+
+    programs.tmux.config = mkOption {
+      type = types.lines;
+      description = ''
+        Configuration options.
+      '';
+    };
+
+    programs.tmux.text = mkOption {
+      internal = true;
+      type = types.attrsOf types.lines;
+      default = {};
+    };
+
+  };
+
+  config = {
+
+    programs.tmux.config = concatStringsSep "\n" tmuxConfigs;
+
+    programs.tmux.text.login-shell = if stdenv.isDarwin then ''
+      set -g default-command "reattach-to-user-namespace ${cfg.loginShell}"
+    '' else ''
+      set -g default-command "${cfg.loginShell}"
+    '';
+
+    programs.tmux.text.sensible = mkIf cfg.enableSensible (''
+      set -g default-terminal "screen-256color"
+      setw -g aggressive-resize on
+
+      set -g base-index 1
+      set -g renumber-windows on
+
+      set -g status-keys emacs
+      set -s escape-time 0
+
+      bind c new-window -c '#{pane_current_path}'
+      bind % split-window -v -c '#{pane_current_path}'
+      bind '"' split-window -h -c '#{pane_current_path}'
+
+      # TODO: make these interactive
+      bind C new-session
+      bind S switch-client -l
+
+      # set -g status-utf8 on
+      # set -g utf8 on
+    '');
+
+    programs.tmux.text.mouse = mkIf cfg.enableMouse ''
+      set -g mouse on
+      setw -g mouse on
+      set -g terminal-overrides 'xterm*:smcup@:rmcup@'
+    '';
+
+    programs.tmux.text.vim = mkIf cfg.enableVim (''
+      setw -g mode-keys vi
+
+      bind h select-pane -L
+      bind j select-pane -D
+      bind k select-pane -U
+      bind l select-pane -R
+      bind s split-window -v -c '#{pane_current_path}'
+      bind v split-window -h -c '#{pane_current_path}'
+
+      bind -t vi-copy v begin-selection
+    '' + optionalString stdenv.isLinux ''
+      bind -t vi-copy y copy-selection
+    '' + optionalString stdenv.isDarwin ''
+      bind -t vi-copy y copy-pipe "reattach-to-user-namespace pbcopy"
+    '');
+
+  };
+}