$NetBSD: patch-unpack__buffer_src_dune,v 1.1 2019/03/19 10:07:47 jaapb Exp $

Remove unknown argument
--- unpack_buffer/src/dune.orig	2019-02-19 14:45:16.000000000 +0000
+++ unpack_buffer/src/dune
@@ -1,2 +1,2 @@
 (library (name unpack_buffer) (public_name core_kernel.unpack_buffer)
- (preprocess (pps ppx_jane -check-doc-comments)) (libraries core_kernel))
\ No newline at end of file
+ (preprocess (pps ppx_jane)) (libraries core_kernel))
