split vim support tools to separate package

pkgs/bck-nvim-base/default.nix

@@ -1,17 +1,8 @@
 { lib
+, extraBinPaths ? [ ]
 , neovim-unwrapped
 , vimPlugins
 , wrapNeovim
-
-  # LSP
-, black
-, efm-langserver
-, lua-language-server
-, nil
-, nodePackages
-, pyright
-, vscode-langservers-extracted
-, yaml-language-server
 }:
 
 let
@@ -22,17 +13,7 @@ let
 
   extraPath = lib.concatLines (map
     (p: "let $PATH .= ':${p}/bin'")
-    [
+    (extraBinPaths)
-      black
-      efm-langserver
-      lua-language-server
-      nil
-      nodePackages.prettier
-      nodePackages.typescript-language-server
-      pyright
-      vscode-langservers-extracted
-      yaml-language-server
-    ]
   );
 
 in

pkgs/bck-nvim-tools.nix

@@ -0,0 +1,25 @@
+{ symlinkJoin
+, black
+, efm-langserver
+, lua-language-server
+, nil
+, nodePackages
+, pyright
+, vscode-langservers-extracted
+, yaml-language-server
+}:
+
+symlinkJoin {
+  name = "bck-nvim-tools";
+  paths = [
+    black
+    efm-langserver
+    lua-language-server
+    nil
+    nodePackages.prettier
+    nodePackages.typescript-language-server
+    pyright
+    vscode-langservers-extracted
+    yaml-language-server
+  ];
+}

pkgs/bck-nvim.nix

@@ -0,0 +1,7 @@
+{ callPackage }:
+
+callPackage ./bck-nvim-base {
+  extraBinPaths = [
+    (callPackage ./bck-nvim-tools.nix { })
+  ];
+}