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Date:      Tue, 05 Sep 2017 21:06:08 +0200
From:      David Naylor <naylor.b.david@gmail.com>
To:        freebsd-mono@freebsd.org
Cc:        Romain =?ISO-8859-1?Q?Tarti=E8re?= <romain@freebsd.org>
Subject:   Re: Update on porting mono 5
Message-ID:  <1884750.4JRtOyePTJ@dragon.local>
In-Reply-To: <20170902090359.GA47675@blogreen.org>
References:  <17078253.u2dgjZK1Z6@dragon.local> <3186981.TyGdqNibkJ@dragon.local> <20170902090359.GA47675@blogreen.org>

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On Saturday, 2 September 2017 11:03:59 Romain Tarti=C3=A8re wrote:
> On Fri, Aug 25, 2017 at 09:41:43PM +0200, David Naylor wrote:
> > [2] A general discussion needs to be had around nuget packages.  Ho=
w do we
> > consume them?
> >=20
> >   i) as downloads with each port containing a copy
> > =20
> >  ii) local ports with consistency across the Ports Collections
> >=20
> > iii) A mixture of the above (i.e. (ii) is there is a native compone=
nt,
> > otherwise (i))
> > I prefer (ii) as I think it gives the end user the best leverage to=
 patch
> > issues with nuget packages locally (and to get updates without wait=
ing on
> > a) upstream, and b) us/ports maintainer).  However, at this point t=
hat
> > option is at 0% progress.
>=20
> Yeah, it's a problem that is broader and broader=E2=80=A6  and for wh=
ich I don't
> think a universal solution works :-/

At a minimum, any nuget package that contains a native (i.e. compiled) =
portion=20
needs to be a Port. =20

> With local copies (i) you end-up with a lot of duplication (Go
> applications are a good example of how this can become quite stupid, =
I
> recently created a port for a go application, the source tarball
> includes the source of all dependencies, and everything is bundled in=
 a
> 13MB executable (that only depends on libc.so and libthr.so).
>=20
> With a port per dependency (ii), you sooner or later have to handle
> conflicts between dependencies (port A needs foo-1.0.0 but port B nee=
ds
> foo-2.0.0) and it can get tricky.

I think we can already handle that (see all the Qt ports).  I'm not sur=
e what=20
currently happens when A depends on B and C but B and C depend on diffe=
rent=20
versions of D.  Does .NET just use the latest version of D?

> I only have experience with programming with Ruby as a language that =
has
> similar problem.  I ended at only installing system tools using the
> FreeBSD ports (e.g. puppet, vagrant, passenger), and for applications=
 I
> actually use, I just grab the source, and use bundler to gather all
> dependencies as the user running the software, therefore I end up hav=
ing
> something similar to (i) without using the port system.
>=20
> My weak Windows development experience learned me to put all dll of a=
n
> application in the application directory.  If it's still a good advic=
e,
> I guess that each application should have it's copy of all it's
> dependencies, and therefore each port should install a bundle of all
> what is required by it.

In my ideal situation all dlls will be installed in the GAC (or just li=
nked to=20
where they are installed).  If I read this [1] correctly, Debian advoca=
tes for=20
all dlls to be registered in the GAC. =20
=20
> Another problem with nugets packages is that you only get binaries,
> right?  That means that is something goes really wrong, there is no w=
ay
> to audit the source code of what led to disaster.  The problem is
> similar with the few Java projects I gave a look at.  My feeling is t=
hat
> this is even worst :-(  Ruby being interpreted, there is no such
> problems.
>=20
> I am not enough involved in Java nor .Net to think about mitigations =
of
> this issue.

This is my primary concern, how does one take control when each port ma=
nages=20
its own private dependencies. =20

[1] https://pkg-mono.alioth.debian.org/cli-policy/
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