Re: [PATCH] gnu: Add capnproto.

[Marius Bakke <mbakke@fastmail.com>]

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Leo Famulari <leo@famulari.name> writes:

> On Fri, Aug 19, 2016 at 06:06:24PM -0400, Leo Famulari wrote:
>> On Sun, Aug 14, 2016 at 07:16:22PM +0100, Marius Bakke wrote:
>> > Leo Famulari <leo@famulari.name> writes:
>> > 
>> > > On Sat, Aug 13, 2016 at 07:48:36PM +0100, Marius Bakke wrote:
>> > >> Note that it bundles googletest; I tried unbundling but it proved
>> > >> difficult. gtest will no longer be used from the 0.6 release so I did
>> > >> not think a comment was necessary.
>> > >
>> > > I am cc-ing Lukas with my reply, since he added our googletest package.
>> > > Maybe he has some insight.
>> > The problem is that their autotools system expects to build gtest as
>> > well, so there are references all over. See:
>> > https://github.com/sandstorm-io/capnproto/blob/release-0.5.3/c%2B%2B/Makefile.am
>> > and also configure.ac. It would have to be patched out, which seems
>> > excessive for a 4MB build dependency.
>> 
>> In my opinion, it's generally not about the size of the bundled
>> dependency. Rather, it's about the opacity of the dependency graph of
>> the application that does the bundling. The worst case would be
>> something like a bundled OpenSSL, for example.
>> 
>> In this case, Debian has accepted the bundled gtest [0], which makes me
>> wonder if my understanding of gtest is incorrect. Perhaps it is designed
>> to be bundled?

It comes bundled more often than not, but decoupling generally works out
of the box, as it's just linked to as with any library AFAICT:

https://github.com/google/googletest/blob/master/googletest/docs/Primer.md

If it was any other library, or if it wasn't dropped in current git, I
would have gone through the effort of purging it.

> In any case, since Debian accepted it, I'm willing to accept it as well,
> unless somebody objects.
>
> But the patch has gone stale due to other changes in serialization.scm.
> Marius, will you send an updated patch?

New patch below. Thanks!


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From 6e73e7c85a044d1da176534ed8ff046431afe617 Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@fastmail.com>
Date: Fri, 12 Aug 2016 13:42:16 +0100
Subject: [PATCH] gnu: Add capnproto.

* gnu/packages/serialization.scm (capnproto): New variable.
---
 gnu/packages/serialization.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/serialization.scm b/gnu/packages/serialization.scm
index c3ce5c5..4a3278f 100644
--- a/gnu/packages/serialization.scm
+++ b/gnu/packages/serialization.scm
@@ -2,6 +2,7 @@
 ;;; Copyright © 2015 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2016 Lukas Gradl <lgradl@openmailbox.org>
 ;;; Copyright © 2016 David Craven <david@craven.ch>
+;;; Copyright © 2016 Marius Bakke <mbakke@fastmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -170,3 +171,32 @@ including serialization and deserialization to and from strings.  It can also
 preserve existing comment in unserialization/serialization steps, making
 it a convenient format to store user input files.")
     (license license:expat)))
+
+(define-public capnproto
+  (package
+    (name "capnproto")
+    (version "0.5.3")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://capnproto.org/capnproto-c++-"
+                    version ".tar.gz"))
+              (sha256
+               (base32
+                "1yvaadhgakskqq5wpv53hd6fc3pp17mrdldw4i5cvgck4iwprcfd"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'check 'do-not-require-/etc/services
+           (lambda _
+             ;; Workaround for test that tries to resolve port name from
+             ;; /etc/services, which is not present in build environment.
+             (substitute* "src/kj/async-io-test.c++" ((":http") ":80"))
+             #t)))))
+    (home-page "https://capnproto.org")
+    (synopsis "Capability-based RPC and serialization system")
+    (description
+     "Cap'n Proto is a very fast data interchange format and capability-based
+RPC system.  Think JSON, except binary.  Or think Protocol Buffers, except faster.")
+    (license license:expat)))
-- 
2.9.2