media-gfx/apngasm: add subslot op for zopfli dep

diff --git a/media-gfx/apngasm/apngasm-2.91.ebuild b/media-gfx/apngasm/apngasm-2.91.ebuild
index 436f81dc383aebee5b75af5bbaa406c545b8e7dc..e5d8debea7bfe5ffa98ac6d0cf9a645c4f9d1cff 100644 (file)
--- a/media-gfx/apngasm/apngasm-2.91.ebuild
+++ b/media-gfx/apngasm/apngasm-2.91.ebuild
@@ -16,7 +16,7 @@ IUSE="7z zopfli"
 
 RDEPEND="media-libs/libpng:0=[apng]
        sys-libs/zlib
-       zopfli? ( app-arch/zopfli )"
+       zopfli? ( app-arch/zopfli:= )"
 DEPEND="${RDEPEND}
        app-arch/unzip"