Don't use "with licenses;" for single licences

And don't use square brackets on such lines.

pkgs/applications/editors/vim/configurable.nix

@@ -190,7 +190,7 @@ composableDerivation {
   meta = with stdenv.lib; {
     description = "The most popular clone of the VI editor";
     homepage    = http://www.vim.org;
-    license = with licenses; [ vim ];
+    license = licenses.vim;
     maintainers = with maintainers; [ lovek323 ];
     platforms   = platforms.unix;
   };

pkgs/applications/editors/vim/default.nix

@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "The most popular clone of the VI editor";
     homepage    = http://www.vim.org;
-    license = with licenses; [ vim ];
+    license = licenses.vim;
     maintainers = with maintainers; [ lovek323 ];
     platforms   = platforms.unix;
   };

pkgs/applications/editors/vim/macvim.nix

@@ -87,7 +87,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Vim - the text editor - for Mac OS X";
     homepage    = https://github.com/b4winckler/macvim;
-    license = with licenses; [ vim ];
+    license = licenses.vim;
     maintainers = with maintainers; [ cstrahan ];
     platforms   = platforms.darwin;
   };

pkgs/applications/editors/vim/qvim.nix

@@ -118,7 +118,7 @@ composableDerivation {
   meta = with stdenv.lib; {
     description = "The most popular clone of the VI editor (Qt GUI fork)";
     homepage    = https://bitbucket.org/equalsraf/vim-qt/wiki/Home;
-    license = with licenses; [ vim ];
+    license = licenses.vim;
     maintainers = with maintainers; [ smironov ttuegel ];
     platforms   = platforms.linux;
   };