Re: Multiple versions

[Dmitry Bogatov]

* Pjotr Prins <address@hidden> [2015-12-27 13:41:52+0100]
> On Sun, Dec 27, 2015 at 12:20:27PM +0300, Dmitry Bogatov wrote:
> > Currently, I am at master branch. I want install parallel-20151122.
> > But it is gone since 0877e. I propose to keep *all* versions,
> > but just 'parallel' refer to latest.
> 
> Use a combination of git hash values (to generate the versions) and
> guix profiles (to manage them at the same time).

It makes sence. The only problem is find required hash. Is it any idea
to automate it?

> > In case of haskell/python/ruby libraries, I propose keep all versions
> > multiplied by every version of compiler/interpreter.
> 
> I do the same with Ruby using profiles. I have any number of interpreters
> installed for testing and any number of libraries using either guix or
> the lib path with a profile in there.

But how do you solve problem, that for example you want library 
foo-999.very.new,
compiled with ruby-1.8, but they never existed at same time in guix
package tree?

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