universal-ctags: add binary symlink for universal-ctags

Some tools like Zoekt expect `ctags`-esque tools to have unique binary names in
order to find them (turns out, there are a lot of "ctags" projects out there.)
Add an alias in order to help it out.

Signed-off-by: Austin Seipp <aseipp@pobox.com>

pkgs/development/tools/misc/universal-ctags/default.nix

@@ -60,6 +60,11 @@ stdenv.mkDerivation (finalAttrs: {
     patchShebangs misc/*
   '';
 
+  # some tools like 'zoekt' want an unambiguous binary name, so give it to them
+  postInstall = ''
+    ln -s $out/bin/ctags $out/bin/universal-ctags
+  '';
+
   doCheck = true;
 
   checkFlags = [