byzanz: fix build with gettext 0.25 (#427190)

pkgs/by-name/by/byzanz/gettext-0.25.patch

@@ -0,0 +1,13 @@
+diff --git a/configure.ac b/configure.ac
+index 620bb26..ce48364 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -29,6 +29,8 @@ AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE], "$GETTEXT_PACKAGE",
+ AM_GLIB_GNU_GETTEXT
+ AM_GLIB_DEFINE_LOCALEDIR(GNOMELOCALEDIR)
+ 
++AM_GNU_GETTEXT_VERSION([0.25])
++AM_GNU_GETTEXT([external])
+ 
+ AC_PROG_CC
+ AM_PROG_CC_C_O

pkgs/by-name/by/byzanz/package.nix

@@ -4,6 +4,7 @@
   fetchgit,
   wrapGAppsHook3,
   cairo,
+  gettext,
   glib,
   gnome-common,
   gst_all_1,
@@ -25,7 +26,10 @@ stdenv.mkDerivation {
     hash = "sha256-3DUwXCPBAmeCRlDkiPUgwNyBa6bCvC/TLguMCK3bo4E=";
   };
 
-  patches = [ ./add-amflags.patch ];
+  patches = [
+    ./add-amflags.patch
+    ./gettext-0.25.patch
+  ];
 
   preBuild = ''
     ./autogen.sh --prefix=$out
@@ -37,6 +41,11 @@ stdenv.mkDerivation {
     "-Wno-error=discarded-qualifiers"
   ];
 
+  preAutoreconf = ''
+    # error: possibly undefined macro: AM_NLS
+    cp ${gettext}/share/gettext/m4/nls.m4 macros/
+  '';
+
   nativeBuildInputs = [
     pkg-config
     intltool