tv vim: move showsyntax to overlay

tv/2configs/vim.nix

@@ -19,33 +19,10 @@ let {
     pkgs.tv.vimPlugins.fzf
     pkgs.tv.vimPlugins.hack
     pkgs.tv.vimPlugins.jq
+    pkgs.tv.vimPlugins.showsyntax
     pkgs.tv.vimPlugins.vim
     pkgs.vimPlugins.fzfWrapper
     pkgs.vimPlugins.undotree
-    ((rtp: rtp // { inherit rtp; }) (pkgs.writeTextFile (let
-      name = "showsyntax";
-    in {
-      name = "vim-plugin-${name}-1.0.0";
-      destination = "/plugin/${name}.vim";
-      text = /* vim */ ''
-        if exists('g:loaded_showsyntax')
-          finish
-        endif
-        let g:loaded_showsyntax = 0
-
-        fu! ShowSyntax()
-          let id = synID(line("."), col("."), 1)
-          let name = synIDattr(id, "name")
-          let transName = synIDattr(synIDtrans(id),"name")
-          if name != transName
-            let name .= " (" . transName . ")"
-          endif
-          echo "Syntax: " . name
-        endfu
-
-        command! -n=0 -bar ShowSyntax :call ShowSyntax()
-      '';
-    })))
     ((rtp: rtp // { inherit rtp; }) (pkgs.write "vim-tv" {
       #
       # Haskell

tv/5pkgs/vim/showsyntax.nix

@@ -0,0 +1,26 @@
+{ pkgs }:
+
+(rtp: rtp // { inherit rtp; }) (pkgs.writeTextFile (let
+  name = "showsyntax";
+in {
+  name = "vim-plugin-${name}-1.0.0";
+  destination = "/plugin/${name}.vim";
+  text = /* vim */ ''
+    if exists('g:loaded_showsyntax')
+      finish
+    endif
+    let g:loaded_showsyntax = 0
+
+    fu! ShowSyntax()
+      let id = synID(line("."), col("."), 1)
+      let name = synIDattr(id, "name")
+      let transName = synIDattr(synIDtrans(id),"name")
+      if name != transName
+        let name .= " (" . transName . ")"
+      endif
+      echo "Syntax: " . name
+    endfu
+
+    command! -n=0 -bar ShowSyntax :call ShowSyntax()
+  '';
+}))