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bug#43228: r-v8 doesn't build since node 10.22 update

From: Mark H Weaver
Subject: bug#43228: r-v8 doesn't build since node 10.22 update
Date: Sat, 05 Sep 2020 14:35:52 -0400

Hi Pierre,

I'm quoting your message out of order to ease my reply.

Pierre Langlois <pierre.langlois@gmx.com> writes:

> I'm afraid I broke r-v8 and a few of its dependants by updating node,
> sorry about that!
> I'm not sure how to fix this, I'm happy to revert the node update if
> needed, let me know! Then we'd have to wait for the next core-updates
> cycle so that we no longer graft nghttp2.

We will actually need node-10.22 (or at least 10.21) in 'master' in just
over 2 weeks, when we'll be compelled to update IceCat to version 78.
On Sept 22, Mozilla is scheduled to release a new batch of security
fixes in 78.3, and there will be no corresponding 68.x release.

(In fact, I had an *identical* commit on my private branch to update
'node' to 10.22, to allow testing IceCat 78 WIP.)

However, if needed, I suppose it might be sufficient for my purposes to
leave 'node' at 10.19.0, and to bind a separate 'node-10.22' variable to
the new version.

> AFAIK, the new node uses a function from nghttp2 1.41 that's not
> present in 1.40, `nghttp2_option_set_max_settings'. However, since curl
> depends on nghttp2 we've grafted 1.40 -> 1.41 to avoid a full rebuild.
> Looking at r-v8's log [0], it complains that the symbol is missing,
> indicating it's trying to link with the old version 1.40. I /believe/
> it's inherited it through r-curl.

If grafting is working as it should, then nghttp2-1.40 should never be
linked at runtime.  However, it is certainly the case that most things
(except node-10.22) are *built* against nghttp2-1.40, where the
aforementioned symbol is missing.

One possible solution might be to update the replacement (graft) for
_curl_ so that it's *built* against nghttp2-1.41.  Something like this

--8<---------------cut here---------------start------------->8---
diff --git a/gnu/packages/curl.scm b/gnu/packages/curl.scm
index 55b7e4393b..bfcb52b678 100644
--- a/gnu/packages/curl.scm
+++ b/gnu/packages/curl.scm
@@ -183,6 +183,9 @@ tunneling, and so on.")
+    (inputs
+     `(("nghttp2" ,nghttp2-1.41 "lib")
+       ,@(alist-delete "nghttp2" (package-inputs curl))))
      (substitute-keyword-arguments (package-arguments curl)
        ((#:phases phases)
--8<---------------cut here---------------end--------------->8---

Would you like to try this and see if it solves the problem?


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