Dear Thierry,

Le jeudi 01 décembre 2016 à 22:56 +0100, Thierry a écrit :
> Hi,
> 
> On Sun, Nov 27, 2016 at 03:52:59AM -0800, Emmanuel Charpentier wrote:
> > OK. Let's try again :
> > I have two questions :
> > 
> >    1. What are the parts (standard, optional or experimental,
> > except, of 
> >    course, the openssl package itself) of Sage that need (directly
> > or 
> >    indirectly) a secure transport layer but would accept either
> > openSSL or 
> >    reasonable substitutes such as Gnu TLS or Mozilla's NSS ?
> >    2. What are the parts (standard, optional or experimental,
> > except, of 
> >    course, the openssl package itself) of Sage that (directly or
> > indirectly) 
> >    need openSSL, no substitute accepted ?
> > 
> > My favorite itch to be scratched (namely R), seems to fall in the
> > first 
> > category, but I have trouble proving it : I would need a reasonable
> > test 
> > machine with no openSSL library to check whether R installs or not
> > using 
> > only Gnu TLS.  All the Linux *desktop* installation I tried
> > install 
> > openSSL, one way or another (even Debian, which is notably prudish
> > about 
> > licensing). I would have to install an ultra-basic virtual machine.
> > This 
> > setup could be used to prove or disprove the dependencies of
> > various parts 
> > of Sage.
> 
> A priori (?), openssl package should not interfere if you do not have
> libssl-dev installed.
> 
> I tried building Sage 7.3 on a VM without libssl-dev, but with both
> libgnutls28-dev and libgnutls-openssl27 installed (on a Debian
> jessie).
> Sage builds and tests fine, but i do not have SSL support when using
> pip:
> 
> ./sage -pip search blah
> SSLError: Can't connect to HTTPS URL because the SSL module is not
> available.

If you still have this VM, could you try to add the current "openssl"
Sage package and tell us if , after this addition, "sage -pip list"
works ?

Thank you in advance !

--
Emmanuel Charpentier

> Ciao,
> Thierry
> 
> 
>  
> > There are only two possible results, and two sets of action :
> > 
> >    1. If no part of Sage depends on openSSL exclusively : fine.
> > package and 
> >    ship Gnu TLS as a standard package, and be done with the damn
> > thing
> >    2. If some part of Sage need openSSL exclusively : since we
> > *can* use a 
> >    systemwise installation but cannot (pseudo-legally) *ship* it,
> > we just 
> >    *have to* depend on this systemwide installation. Add it to the 
> >    prerequisites, and be done with it.
> > 
> > 
> > So this inventory is crucial.
> > 
> > What do you know about these dependencies ?
> > 
> > --
> > Emmanuel Charpentier
> > 
> > Le lundi 21 novembre 2016 12:21:31 UTC+1, Emmanuel Charpentier a
> > écrit :
> > > 
> > > Dear list,
> > > 
> > > The fact that we can't ship openSSL (see uncountable theads in
> > > sage-devel 
> > > and others) seems to pose more and more difficulties. See for
> > > example this 
> > > thread <https://groups.google.com/forum/#!topic/sage-support/rDV9
> > > uGT2ViM> 
> > > on sage-support, and especially Dima's answer 
> > > <https://groups.google.com/d/msg/sage-support/rDV9uGT2ViM/GuKDbhS
> > > KAwAJ>, 
> > > as well as this annoying ticket <https://trac.sagemath.org/ticket
> > > /21767>, 
> > > discussed in this saga 
> > > <https://groups.google.com/forum/#!topic/sage-devel/QaBdHSNJuKg>
> > > . 
> > > 
> > > Could'nt we add OpenSSL as a prerequisite to Sage, and it"s
> > > development 
> > > files as a prerequisite to building Sage ? This would require of
> > > the user 
> > > to install OpenSSL systemwide, thus making it "system software"
> > > and 
> > > satisfying the strange licensing requirements that bother us.
> > > 
> > > One could even do that indirectly, by requiring a systemwide
> > > libcurl 
> > > supporting https : this would de facto enforce the systemwide
> > > installation 
> > > of OpenSSL (or a reasonable facsimile). That's what I was trying
> > > to do in this 
> > > proposal <https://trac.sagemath.org/ticket/21767#comment:41>...
> > > (IIRC, 
> > > the problem with libcurl is also bound to OpenSSL : libcurl
> > > itself is not a 
> > > problem. But I'll have to check : if this is true, we can require
> > > OpenSSL 
> > > and ship libcurl which will then compile cleanly).
> > > 
> > > Comments ? Especially wrt Macs, which seem to be further
> > > encumbered by 
> > > Apple's dirty tricks...
> > > 
> > > Should we have a vote ?
> > > 
> > > --
> > > Emmanuel Charpentier
> > > 
> > > 
> > 
> > -- 
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> 

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