R: use the new texlive

The docs look fine. There's still an error though:
    Running 'texi2dvi' on 'grid.tex' failed.

pkgs/top-level/all-packages.nix

@@ -8713,7 +8713,10 @@ let
   ### DEVELOPMENT / R MODULES
 
   R = callPackage ../applications/science/math/R {
-    texLive = texLiveAggregationFun { paths = [ texLive texLiveExtra ]; };
+    # TODO: split docs into a separate output
+    texLive = texlive.combine {
+      inherit (texlive) scheme-small inconsolata helvetic texinfo fancyvrb cm-super;
+    };
     openblas = openblasCompat;
     withRecommendedPackages = false;
   };