Hello Guix Users! I have not figured out yet how to install a specific version of a package, that is not the newest available version.
For example I do the following: ~~~~ guix environment --ad-hoc 'python-redis@3.3.8' 'python@3.8.2' -- python3.8 ~~~~ I had this version of python-redis in a manifest.scm file. However, there seems to have been an update and now this manifest file cannot be used any longer, as it references an old version. It will tell me the same error as the one-liner above: ~~~~ guix environment: error: python-redis: package not found for version 3.3.8 ~~~~ However, I think that is strange, because I can definitely see, that version does exist on http://data.guix.gnu.org/repository/1/branch/master/package/python-redis. There are now the versions: '(3.5.3 3.3.8 3.2.1 3.2.0 2.10.6) So how would I need to write my manifest.scm or my one-liner to get back to that older version? I would like to have reproducible environments and I think that is also a goal of GNU Guix package manager? Otherwise how could it ever guarantee, that on 2 different machines at 2 different points in time, I can build the same environment? A package could have been updated in between the 2 setups and then the previously latest version would become unavailable. I must be missing something. Best regards, Zelphir
