texlive: add xdvi binary part (fixes #11816)

It seems to work fine for me now, after adding dependency on metafont.

pkgs/tools/typesetting/tex/texlive-new/bin.nix

···
 , makeWrapper
 }:
 
+# Useful resource covering build options:
+# http://tug.org/texlive/doc/tlbuild.html
 
 let
   withSystemLibs = map (libname: "--with-system-${libname}");
···
     ++ [ "--with-system-kpathsea" "--with-system-icu" ];
 
   enableParallelBuilding = true;
+};
+
+
+xdvi = stdenv.mkDerivation {
+  name = "texlive-xdvi.bin-${version}";
+
+  inherit (common) src;
+
+  buildInputs = [ pkgconfig core/*kpathsea*/ freetype ghostscript ]
+    ++ (with xorg; [ libX11 libXaw libXi libXpm libXmu libXaw libXext libXfixes ]);
+
+  preConfigure = "cd texk/xdvik";
+
+  configureFlags = common.configureFlags
+    ++ [ "--with-system-kpathsea" "--with-system-libgs" ];
+
+  enableParallelBuilding = true;
+
+  postInstall = ''
+    substituteInPlace "$out/bin/xdvi" \
+      --replace "exec xdvi-xaw" "exec '$out/bin/xdvi-xaw'"
+  '';
+  # TODO: it's suspicious that mktexpk generates fonts into ~/.texlive2014
 };
 
 

pkgs/tools/typesetting/tex/texlive-new/default.nix

···
       latex = orig.latex // {
         deps = removeAttrs orig.latex.deps [ "luatex" ];
       };
+
+      xdvi = orig.xdvi // { # it seems to need it to transform fonts
+        deps = (orig.xdvi.deps or {}) // { inherit (tl) metafont; };
+      };
     }; # overrides
 
     # tl =