Switch to using texlive full scheme

Kept finding packages I was missing...

Add engrave-faces package for Emacs to fontify src blocks when
exporting

system/home/emacs/packages.nix

@@ -48,6 +48,7 @@ with epkgs;
   julia-ts-mode
   python-docstring
   python-pytest
+  engrave-faces
   auctex
   markdown-mode
   pandoc-mode

system/home/texlive/default.nix

@@ -2,18 +2,7 @@
 {
   home.packages = with pkgs; [
     (texlive.combine {
-      inherit (texlive)
-        scheme-medium
-        dvisvgm
-        dvipng
-        wrapfig
-        amsmath
-        ulem
-        hyperref
-        capt-of
-        listings
-        bera
-        ;
+      inherit (texlive) scheme-full;
       latex-beamer-ukaea.pkgs = [ (callPackage ./latex-beamer-ukaea/default.nix { }) ];
     })
   ];