diff --git a/pkgs/build-support/upstream-updater/urls-from-page.sh b/pkgs/build-support/upstream-updater/urls-from-page.sh
index f1ddf0bfd88e..3c494114e914 100755
--- a/pkgs/build-support/upstream-updater/urls-from-page.sh
+++ b/pkgs/build-support/upstream-updater/urls-from-page.sh
@@ -9,6 +9,6 @@ relpath="${path#$server}"
  
 echo "URL: $url" >&2
 
-curl -L -k "$url" | sed -re 's/^/-/;s/[hH][rR][eE][fF]="([^"]*)"/\n+\1\n-/g' | \
+curl -L -k "$url" | sed -re 's/^/-/;s/[hH][rR][eE][fF]=("([^"]*)"|([^" <>&]+)[ <>&])/\n+\2\3\n-/g' | \
   sed -e '/^-/d; s/^[+]//; /^#/d;'"s/^\\//$protocol:\\/\\/$server\\//g" | \
   sed -re 's`^[^:]*$`'"$protocol://$basepath/&\`"
diff --git a/pkgs/tools/archivers/zpaq/default.nix b/pkgs/tools/archivers/zpaq/default.nix
new file mode 100644
index 000000000000..2188668d3bf1
--- /dev/null
+++ b/pkgs/tools/archivers/zpaq/default.nix
@@ -0,0 +1,51 @@
+{stdenv, fetchurl, unzip}:
+let
+  s = # Generated upstream information
+  rec {
+    baseName="zpaq";
+    version="622";
+    name="${baseName}-${version}";
+    hash="19avac9spq5kgcgbixd9kvjhy9j0ga75izwqhif44h3jlzdydsmc";
+    url="http://mattmahoney.net/dc/zpaq622.zip";
+    sha256="19avac9spq5kgcgbixd9kvjhy9j0ga75izwqhif44h3jlzdydsmc";
+  };
+  buildInputs = [
+    unzip
+  ];
+  isUnix = stdenv.isLinux || stdenv.isGNU || stdenv.isDarwin || stdenv.isBSD;
+  isx86 = stdenv.isi686 || stdenv.isx86_64;
+  compileFlags = ""
+    + (stdenv.lib.optionalString isUnix " -Dunix -pthread ")
+    + (stdenv.lib.optionalString (!isx86) " -DNOJIT ")
+    + " -DNDEBUG "
+    + " -fPIC "
+    ;
+in
+stdenv.mkDerivation {
+  inherit (s) name version;
+  inherit buildInputs;
+  src = fetchurl {
+    inherit (s) url sha256;
+  };
+  sourceRoot = ".";
+  buildPhase = ''
+    g++ -shared -O3 libzpaq.cpp divsufsort.c ${compileFlags} -o libzpaq.so
+    g++ -O3 -L. -L"$out/lib" -lzpaq zpaq.cpp -o zpaq
+    g++ -O3 -L. -L"$out/lib" -lzpaq zpaqd.cpp -o zpaqd
+  '';
+  installPhase = ''
+    mkdir -p "$out"/{bin,include,lib,share/doc/zpaq}
+    cp libzpaq.so "$out/lib"
+    cp zpaq zpaqd "$out/bin"
+    cp libzpaq.h divsufsort.h "$out/include"
+    cp readme.txt "$out/share/doc/zpaq"
+  '';
+  meta = {
+    inherit (s) version;
+    description = ''An archiver with backward compatibility of versions for decompression'';
+    license = stdenv.lib.licenses.gpl3Plus ;
+    maintainers = [stdenv.lib.maintainers.raskin];
+    platforms = stdenv.lib.platforms.linux;
+    homepage = "http://mattmahoney.net/dc/zpaq.html";
+  };
+}
diff --git a/pkgs/tools/archivers/zpaq/default.upstream b/pkgs/tools/archivers/zpaq/default.upstream
new file mode 100644
index 000000000000..2d62f834647d
--- /dev/null
+++ b/pkgs/tools/archivers/zpaq/default.upstream
@@ -0,0 +1,3 @@
+url http://mattmahoney.net/dc/zpaq.html
+version_link "/zpaq[0-9]+[.]zip"
+version "[^0-9]*([0-9]+)[^0-9]*" '\1'