init

modules/default.nix

@@ -92,8 +92,10 @@ inputs: {
   extraLuaPackages = ps: map (x: ps.${x}) vimOptions.luaPackages;
   extraPython3Packages = ps: map (x: ps.${x}) vimOptions.python3Packages;
 
-  extraWrapperArgs =
-    concatStringsSep " " (optional (vimOptions.extraPackages != []) ''--prefix PATH : "${makeBinPath vimOptions.extraPackages}"'');
+  extraWrapperArgs = concatStringsSep " " (optional (vimOptions.extraPackages != []) ''
+    --unset XDG_DATA_DIRS \
+    --prefix PATH : "${makeBinPath vimOptions.extraPackages}"
+  '');
 
   # wrap user's desired neovim package with the desired neovim configuration
   # using wrapNeovimUnstable and makeNeovimConfig from nixpkgs.
@@ -119,6 +121,8 @@ in {
   inherit (module) options config;
   inherit (module._module.args) pkgs;
 
-  # expose wrapped neovim-package
-  neovim = neovim-wrapped;
+  # expose wrapped neovim package
+  neovim = neovim-wrapped.overrideAttrs (old: {
+    generatedWrapperArgs = (old.generatedWrapperArgs or []) ++ ["--set" "NVIM_APPNAME" "nvf"];
+  });
 }

modules/wrapper/rc/options.nix

@@ -60,6 +60,13 @@ in {
             path = ./runtime;
             name = "nvim-runtime";
           })
+
+          # as a Neovim plugin - pure, reproducible and follows Neovim practices
+          (pkgs.vimUtils.buildVimPlugin {
+             pname = "nvim-runtime";
+             src = ./nvim-runtime; # needs a plugin/init.lua, can refer to modules in a root level lua/ dir
+             version = "#";
+          })
         ]
       '';
 
@@ -133,14 +140,27 @@ in {
           -- Remove default user runtime paths from the
           -- `runtimepath` option to avoid leaking user configuration
           -- into the final neovim wrapper
-          local defaultRuntimePaths = {
-            vim.fn.stdpath('config'),              -- $HOME/.config/nvim
-            vim.fn.stdpath('config') .. "/after",  -- $HOME/.config/nvim/after
-            vim.fn.stdpath('data') .. "/site",     -- $HOME/.local/share/nvim/site
-          }
+          local defaultRuntimePaths = {}
+          local function addPath(path)
+              table.insert(defaultRuntimePaths, path)
+              table.insert(defaultRuntimePaths, path .. "/site")
+          end
+
+          -- Add standard paths to the table
+          addPath(vim.fn.stdpath('config'))            -- $HOME/.config/nvim
+          addPath(vim.fn.stdpath('data'))              -- $HOME/.local/share
+          addPath(vim.fn.stdpath('state'))             -- $HOME/.local/state
+          addPath(vim.fn.stdpath('cache'))             -- $HOME/.cache/nvim
+          addPath(vim.fn.stdpath('config_dirs'))
+          addPath(vim.fn.stdpath('data_dirs'))
 
           for _, path in ipairs(defaultRuntimePaths) do
-            vim.opt.runtimepath:remove(path)
+              -- Check if the path exists in runtimepath before removing it
+              if vim.fn.index(vim.opt.runtimepath, path) >= 0 then
+                  vim.opt.runtimepath:remove(path)
+              else
+                  print("Path does not exist in runtimepath:", path)
+              end
           end
         ''}