tamarin-prover: install vim-plugin to nvim/site

pkgs/applications/science/logic/tamarin-prover/default.nix

@@ -80,6 +80,8 @@ mkDerivation (common "tamarin-prover" src // {
     # so that the package can be used as a vim plugin to install syntax coloration
     install -Dt $out/share/vim-plugins/tamarin-prover/syntax/ etc/syntax/spthy.vim
     install etc/filetype.vim -D $out/share/vim-plugins/tamarin-prover/ftdetect/tamarin.vim
+    mkdir -p $out/share/nvim
+    ln -s $out/share/vim-plugins/tamarin-prover $out/share/nvim/site
     # Emacs SPTHY major mode
     install -Dt $out/share/emacs/site-lisp etc/spthy-mode.el
   '';