home/modules/tmux-sessionizer.nix

@@ -1,22 +1,48 @@
 { 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;
+in
+{
+  options.snowhawk.tmux.sessionizer = {
+    enable = lib.mkEnableOption "tmux-sessionizer home-manager module";
 
-  tmux-sessionizer = pkgs.writeShellApplication {
+    paths = lib.mkOption {
+      type = with lib.types; listOf str;
+      description = ''
+        list of paths to select with tmux-sessionizer
+      '';
+      default = [ ];
+      example = [
+        "~"
+        "~/projects"
+        "~/src"
+      ];
+    };
+
+    pkg = lib.mkOption {
+      type = lib.types.package;
+      description = ''
+        tmux-sessionizer binary package
+      '';
+    };
+  };
+
+  config = lib.mkIf enable {
+    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 ${lib.concatStringsSep " " cfg.paths} -mindepth 1 -maxdepth 1 -type d \
-          | fzf --tmux center --preview="ls {} --color || true")
+            selected=$(find -L ${lib.concatStringsSep " " cfg.paths} -mindepth 1 -maxdepth 1 -type d | fzf)
           fi
 
           if [[ -z $selected ]]; then
@@ -37,39 +63,8 @@ let
 
           tmux switch-client -t "$selected_name"
         '';
-  };
-in
-{
-  options.snowhawk.tmux.sessionizer = {
-    enable = lib.mkEnableOption "tmux-sessionizer home-manager module";
+      });
 
-    paths = lib.mkOption {
-      type = with lib.types; listOf str;
-      description = ''
-        list of paths to select with tmux-sessionizer
-      '';
-      default = [ ];
-      example = [
-        "~"
-        "~/projects"
-        "~/src"
-      ];
-    };
-
-    package = lib.mkOption {
-      type = lib.types.package;
-      default = tmux-sessionizer;
-      description = ''
-        tmux-sessionizer binary package
-      '';
-    };
-  };
-
-  config = lib.mkIf enable {
-    home.packages = [ cfg.package ];
-
-    programs.tmux.extraConfig = ''
-      bind-key -r f run-shell "tmux neww ${getExe cfg.package}"
-    '';
+    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}"
       '';
     };