home/modules/tmux-sessionizer.nix

@@ -1,43 +1,12 @@
 { config, lib, pkgs, ... }:
 
 let
-  inherit (lib) getExe;
+  inherit (lib) getExe getExe';
 
   cfg = config.snowhawk.tmux.sessionizer;
   tmuxCfg = config.snowhawk.tmux;
 
   enable = cfg.enable && tmuxCfg.enable;
-
-  tmux-sessionizer = pkgs.writeShellApplication {
-    name = "tmux-sessionizer";
-    runtimeInputs = with pkgs; [ tmux fzf findutils coreutils procps ];
-    text = ''
-      if [[ $# -eq 1 ]]; then
-        selected=$1
-      else
-        selected=$(find -L ${lib.concatStringsSep " " cfg.paths} -mindepth 1 -maxdepth 1 -type d \
-          | fzf --tmux center --preview="ls {} --color || true")
-      fi
-
-      if [[ -z $selected ]]; then
-        exit 0
-      fi
-
-      selected_name=$(basename "$selected" | tr . _)
-      tmux_running=$(pgrep tmux)
-
-      if [[ -z $TMUX ]] && [[ -z $tmux_running ]]; then
-        tmux new-session -s "$selected_name" -c "$selected"
-        exit 0
-      fi
-
-      if ! tmux has-session -t="$selected_name" 2>/dev/null; then
-        tmux new-session -ds "$selected_name" -c "$selected"
-      fi
-
-      tmux switch-client -t "$selected_name"
-    '';
-  };
 in
 {
   options.snowhawk.tmux.sessionizer = {
@@ -56,9 +25,8 @@ in
       ];
     };
 
-    package = lib.mkOption {
+    pkg = lib.mkOption {
       type = lib.types.package;
-      default = tmux-sessionizer;
       description = ''
         tmux-sessionizer binary package
       '';
@@ -66,10 +34,37 @@ in
   };
 
   config = lib.mkIf enable {
-    home.packages = [ cfg.package ];
+    snowhawk.tmux.sessionizer.pkg =
+      lib.mkDefault (pkgs.writeShellApplication {
+        name = "tmux-sessionizer";
+        runtimeInputs = with pkgs; [ tmux fzf findutils coreutils procps ];
+        text = ''
+          if [[ $# -eq 1 ]]; then
+            selected=$1
+          else
+            selected=$(find -L ${lib.concatStringsSep " " cfg.paths} -mindepth 1 -maxdepth 1 -type d | fzf)
+          fi
 
-    programs.tmux.extraConfig = ''
+          if [[ -z $selected ]]; then
-      bind-key -r f run-shell "tmux neww ${getExe cfg.package}"
+            exit 0
-    '';
+          fi
+
+          selected_name=$(basename "$selected" | tr . _)
+          tmux_running=$(pgrep tmux)
+
+          if [[ -z $TMUX ]] && [[ -z $tmux_running ]]; then
+            tmux new-session -s "$selected_name" -c "$selected"
+            exit 0
+          fi
+
+          if ! tmux has-session -t="$selected_name" 2>/dev/null; then
+            tmux new-session -ds "$selected_name" -c "$selected"
+          fi
+
+          tmux switch-client -t "$selected_name"
+        '';
+      });
+
+    home.packages = [ cfg.pkg ];
   };
 }

home/modules/tmux.nix

@@ -1,9 +1,10 @@
 { lib, config, pkgs, ... }:
 
 let
-  inherit (lib) getExe;
+  inherit (lib) getExe optionalString;
 
   cfg = config.snowhawk.tmux;
+  sessionizer = cfg.sessionizer;
   macos = config.snowhawk.macos.enable;
 in
 {
@@ -40,6 +41,8 @@ in
 
         bind '"' split-window -v -c "#{pane_current_path}"
         bind % split-window -h -c "#{pane_current_path}"
+      '' + optionalString sessionizer.enable ''
+        bind-key -r f run-shell "tmux neww ${getExe sessionizer.pkg}"
       '';
     };