splix: revert "2.0.0 -> svn-r315" version update

This reverts commit 6ea526462b and a9f8613dae to fix
https://github.com/NixOS/nixpkgs/issues/13734.

pkgs/misc/cups/drivers/splix/default.nix

@@ -1,15 +1,15 @@
-{ stdenv, fetchsvn, fetchurl, cups, zlib }:
-let rev = "315"; in
+{stdenv, fetchurl, cups, zlib}:
+
 stdenv.mkDerivation rec {
-  name = "splix-svn-${rev}";
-  src = fetchsvn {
-    # We build this from svn, because splix hasn't been in released in several years
-    # although the community has been adding some new printer models.
-    url = "svn://svn.code.sf.net/p/splix/code/splix";
-    rev = "r${rev}";
-    sha256 = "16wbm4xnz35ca3mw2iggf5f4jaxpyna718ia190ka6y4ah932jxl";
+  name = "splix-2.0.0";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/splix/${name}.tar.bz2";
+    sha256 = "0bwivrwwvh6hzvnycpzqs7a0capgycahc4s3v9ihx552fgy07xwp";
   };
 
+  patches = [ ./splix-2.0.0-gcc45.patch ];
+
   preBuild=''
     makeFlags="V=1 DISABLE_JBIG=1 CUPSFILTER=$out/lib/cups/filter CUPSPPD=$out/share/cups/model"
   '';

pkgs/misc/cups/drivers/splix/splix-2.0.0-gcc45.patch

@@ -0,0 +1,18 @@
+Fixing build with gcc 4.5
+
+http://bugs.gentoo.org/show_bug.cgi?id=318581
+
+downloaded from
+http://gentoo-overlays.zugaina.org/gentoo/portage/net-print/splix/files/splix-2.0.0-gcc45.patch
+
+--- splix-old/src/ppdfile.cpp
++++ splix-new/src/ppdfile.cpp
+@@ -282,7 +282,7 @@
+  * Opérateur d'assignation
+  * Assignment operator
+  */
+-void PPDFile::Value::operator = (const PPDFile::Value::Value &val)
++void PPDFile::Value::operator = (const PPDFile::Value &val)
+ {
+     if (_preformatted)
+         delete[] _preformatted;