Hi,

I'm curious about how to install an old package version with guix.

Example for what I mean:

In e.g Debian, the list of available packages is separate from apt-get
(et al.). So I can query all available versions of a package and install
the version I need:

 $ apt-cache madison nginx
     nginx | 1.9.10-1~bpo8+3 | http://debian.mirror.lrz.de/debian/
jessie-backports/ma
     nginx | 1.6.2-5+deb8u2 | http://security.debian.org/
jessie/updates/main amd64 Pa

Now in guix, the list of available packages is build into guix, there is
no external cache. So how can I e.g. install python-2.7.10 after I
installed guix 0.11.0, which only defines python-2.7.11?

-- 
Schönen Gruß
Hartmut Goebel
Dipl.-Informatiker (univ), CISSP, CSSLP, ISO 27001 Lead Implementer
Information Security Management, Security Governance, Secure Software
Development

Goebel Consult, Landshut
http://www.goebel-consult.de

Blog:
http://www.goebel-consult.de/blog/bewertung-pgp-verschlusselung-bei-web.de-und-gmx

Kolumne:
http://www.cissp-gefluester.de/2012-04-compliance-bringt-keine-sicherheit