nix-shell: add eqexam

shell.nix

@@ -8,6 +8,44 @@ let
   };
   pkgs = import pkgsSrc {};
 
+  eqexam.pkgs = [
+    (pkgs.stdenv.mkDerivation rec {
+      version = "2012-05-17";
+      pname = "eqexam";
+      name = "${pname}-${version}";
+      tlType = "run";
+
+      src = pkgs.fetchurl {
+        url = "http://www.math.uakron.edu/~dpstory/eqexam/eqexam_pack.zip";
+        sha256 = "0g4w9ma6cr277li5b8dps9fm9jkjlwzwjc6ix01mw4kva4h5fdrj";
+      };
+
+      buildInputs = [ pkgs.unzip pkgs.texlive.combined.scheme-basic ];
+
+      buildPhase = "
+        latex eqexam.ins
+      ";
+
+      installPhase = "
+        mkdir -p $out/tex/latex/eqexam
+        cp -va *.sty *.cfg *.def $out/tex/latex/eqexam
+
+        mkdir -p $out/doc/latex/eqexam
+        cp -va doc/* $out/doc/latex/eqexam
+      ";
+
+      meta = {
+        branch = "3";
+        platforms = pkgs.stdenv.lib.platforms.unix;
+      };
+    })
+  ];
+
+  mytexlive =  (pkgs.texlive.combine {
+    inherit (pkgs.texlive) scheme-full;
+    inherit eqexam;
+  });
+
 in pkgs.stdenv.mkDerivation {
   name = "msc-thesis";
   shellHook = ''
@@ -141,7 +179,7 @@ in pkgs.stdenv.mkDerivation {
         ];
       };
     })
-    pkgs.texlive.combined.scheme-full
+    mytexlive
     pkgs.zathura
   ]; 
 }