jackmix: don't fail on deprecated definitions

pkgs/applications/audio/jackmix/default.nix

@@ -7,6 +7,8 @@ stdenv.mkDerivation rec {
     sha256 = "18f5v7g66mgarhs476frvayhch7fy4nyjf2xivixc061ipn0m82j";
   };
 
+  patches = [ ./no_error.patch ];
+
   buildInputs = [
     pkgconfig
     scons
@@ -31,5 +33,3 @@ stdenv.mkDerivation rec {
     platforms = stdenv.lib.platforms.linux;
   };
 }
-
-

pkgs/applications/audio/jackmix/no_error.patch

@@ -0,0 +1,13 @@
+diff --git a/SConstruct b/SConstruct
+index 4290fa5..0a7a679 100644
+--- a/SConstruct
++++ b/SConstruct
+@@ -16,7 +16,7 @@ env = Environment(
+ env.Replace( LIBS="" )
+ env.Replace( LIBPATH="" )
+
+-env.MergeFlags( ['-Wall', '-Werror', '-g', '-fpic'] )
++env.MergeFlags( ['-g', '-fpic'] )
+
+ tests = { }
+ tests.update( env['PKGCONFIG_TESTS'] )