Ricardo Wurmus <rek...@elephly.net> writes:

> Hi Chris,
>
>> Ricardo Wurmus <rek...@elephly.net> writes:
>>
>>> That’s because the package version itself is insufficient.  In Guix
>>> we’re dealing with package “variants”.
>>
>> Where is the concept of a package "variant" defined?  I briefly grepped
>> in the source but only found some ad-hoc stuff for Python and OCaml,
>> which actually do some kind of stuff with the package-properties.
>
> What I meant is that the version string alone is insufficient.  You can
> have multiple variants of a package with the same nominal version, but
> the differences are in the closure of the package.  When Guix is
> upgraded in between two invocations of “guix package -u” seeing the same
> “version” of a package to be upgraded to is a common occurrence.
>
>> How can the inputs have changed if Pierre is just running "guix package
>> -u" repeatedly?
>
> That bit of information was not available to me when I composed my
> initial response.  If Guix is not changed in between then this behaviour
> seems to be a bug.

I think this is a bug.  I've reported it here:

https://bugs.gnu.org/31142

-- 
Chris

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