diff --git a/nix/progs/nvim/config.vim b/nix/progs/nvim/config.vim
index 3bba539..2b75ad1 100644
--- a/nix/progs/nvim/config.vim
+++ b/nix/progs/nvim/config.vim
@@ -59,18 +59,32 @@ set ignorecase    " Case insensitive.
 set smartcase     " Case insensitive if no uppercase letter in pattern, case sensitive otherwise
 
 " Set up a line limiter for each lang
-au BufNewFile,BufRead *.nix         set colorcolumn=101
-au BufNewFile,BufRead *.vim         set colorcolumn=101
-au BufNewFile,BufRead *.ts,*.tsx    set colorcolumn=101
-au BufNewFile,BufRead *.js,*.jsx    set colorcolumn=101
-au BufNewFile,BufRead *.rs          set colorcolumn=101
-au BufNewFile,BufRead *.json        set colorcolumn=81
-au BufNewFile,BufRead *.yml,*.yaml  set colorcolumn=81
-au BufNewFile,BufRead *.md          set colorcolumn=81
-" TODO: add limiter for haskell
+aug line_limiter 
+  au!
+  au BufNewFile,BufRead *.nix         setlocal colorcolumn=101
+  au BufNewFile,BufRead *.vim         setlocal colorcolumn=101
+  au BufNewFile,BufRead *.ts,*.tsx    setlocal colorcolumn=101
+  au BufNewFile,BufRead *.js,*.jsx    setlocal colorcolumn=101
+  au BufNewFile,BufRead *.rs          setlocal colorcolumn=101
+  au BufNewFile,BufRead *.json        setlocal colorcolumn=81
+  au BufNewFile,BufRead *.yml,*.yaml  setlocal colorcolumn=81
+  au BufNewFile,BufRead *.md          setlocal colorcolumn=81
+  " TODO: add limiter for haskell
+aug END
 
 " Spell check for markdown files
-au BufNewFile,BufRead *.md set spell
+aug spell_check
+  au!
+  au BufNewFile,BufRead *.md          setlocal spell
+aug END
+
+" Set up folding
+aug folding
+  au!
+  au BufNewFile,BufRead *.js,*.jsx    syntax on | setlocal foldmethod=syntax
+  au BufNewFile,BufRead *.ts,*.tsx    syntax on | setlocal foldmethod=syntax
+  au BufNewFile,BufRead *.rs          syntax on | setlocal foldmethod=syntax
+aug END
 
 " Enable fast navigation between windows
 nnoremap <C-h> <C-W>h
@@ -82,24 +96,27 @@ nnoremap <C-k> <C-W>k
 nnoremap Q <nop>
 nnoremap gQ <nop>
 
-" Disable arrow keys and page up / down
+" Disable arrow keys
 noremap <Up> <nop>
 noremap <Down> <nop>
 noremap <Left> <nop>
 noremap <Right> <nop>
-inoremap <Up> <nop>
-inoremap <Down> <nop>
-inoremap <Left> <nop>
-inoremap <Right> <nop>
 vnoremap <Up> <nop>
 vnoremap <Down> <nop>
 vnoremap <Left> <nop>
 vnoremap <Right> <nop>
+"... instead of insert mode for rus lang
+"inoremap <Up> <nop>
+"inoremap <Down> <nop>
+"inoremap <Left> <nop>
+"inoremap <Right> <nop>
+
+" Disable page up / down
 noremap <PageUp> <nop>
-inoremap <PageUp> <nop>
-vnoremap <PageUp> <nop>
 noremap <PageDown> <nop>
+inoremap <PageUp> <nop>
 inoremap <PageDown> <nop>
+vnoremap <PageUp> <nop>
 vnoremap <PageDown> <nop>
 
 " Disable mouse / touchpad (only in vim)
diff --git a/nix/progs/xplr/default.nix b/nix/progs/xplr/default.nix
new file mode 100644
index 0000000..57a6b24
--- /dev/null
+++ b/nix/progs/xplr/default.nix
@@ -0,0 +1,28 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.progs.xplr;
+in
+{
+  options.progs.xplr = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Add and configure xplr, a terminal UI based file explorer";
+    };
+  };
+  
+  config = mkIf cfg.enable {
+    home.packages = with pkgs; [
+      xplr      # a terminal UI based file explorer
+    ];
+      
+    
+    xdg.configFile = {
+      "xplr/init.lua".source = ./init.lua;
+    };
+  };
+}
+
diff --git a/nix/progs/xplr/init.lua b/nix/progs/xplr/init.lua
new file mode 100644
index 0000000..561d56e
--- /dev/null
+++ b/nix/progs/xplr/init.lua
@@ -0,0 +1 @@
+version = "0.18.0"