tmux-sessionizer: preview

home/modules/tmux-sessionizer.nix

@@ -1,48 +1,22 @@
 { config, lib, pkgs, ... }:
 
 let
-  inherit (lib) getExe getExe';
+  inherit (lib) 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";
 
-    paths = lib.mkOption {
+  tmux-sessionizer = pkgs.writeShellApplication {
-      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 ${lib.concatStringsSep " " cfg.paths} -mindepth 1 -maxdepth 1 -type d | fzf)
+        selected=$(find -L ${lib.concatStringsSep " " cfg.paths} -mindepth 1 -maxdepth 1 -type d \
+          | fzf --tmux center --preview="ls {} --color || true")
       fi
 
       if [[ -z $selected ]]; then
@@ -63,8 +37,39 @@ in
 
       tmux switch-client -t "$selected_name"
     '';
-      });
+  };
+in
+{
+  options.snowhawk.tmux.sessionizer = {
+    enable = lib.mkEnableOption "tmux-sessionizer home-manager module";
 
-    home.packages = [ cfg.pkg ];
+    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/modules/tmux.nix

@@ -1,10 +1,9 @@
 { lib, config, pkgs, ... }:
 
 let
-  inherit (lib) getExe optionalString;
+  inherit (lib) getExe;
 
   cfg = config.snowhawk.tmux;
-  sessionizer = cfg.sessionizer;
   macos = config.snowhawk.macos.enable;
 in
 {
@@ -41,8 +40,6 @@ 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}"
       '';
     };