Re: [Caml-list] Opam: using both 1.2 and 2.0

[Hendrik Boom <hendrik@topoi.pooq.com>]

On Mon, Jan 07, 2019 at 10:25:10AM +0100, Sébastien Hinderer wrote:
> Daniel Bünzli (2019/01/07 10:22 +0100):
> > On 7 January 2019 at 09:12:12, Sébastien Hinderer (sebastien.hinderer@inria.fr) wrote:
> > 
> > > Is there a suggested way to achieve this?
> > 
> > I guess the easiest would be to make a wrapper shell script for opam
> > v1.2 that sets OPAMROOT to a place where it can operate without
> > disturbing your opam v2 install. 
> 
> Will try that! Thanks! But still have to figure out how to install opam
> 1 I guess, because it will probably not be possible to install it
> through the distribution's package manager.

You could try dowloading the .deb from an older Deboan release and using dpkg.
That's if the package depedencies haven't changed much.

Or you could try edit /etc/apt/sources.lst,
    apt-get update, 
    apt-get-install opam
and then put sources.lst back the way it was and
    apt-get update
again.

That requires the old dependencies not to conflict with the new ones.  

And in any case you'd probably have to move the old opam binary before 
you reinstall the new one.

-- hendrik

> 
> Best wishes,
> 
> Sébastien.
> 
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