bug#31719: Chains of dependencies getting longer

[Ricardo Wurmus <rekado@elephly.net>]

Hi Björn,

> On Mon, 01 Mar 2021 22:33:55 +0100
> Ludovic Courtès <ludo@gnu.org> wrote:
>
>> It must be a recent regression.  I think this is an unintended
>> side-effect of 44425e1f2a96aee39a21dff634abb9b77b44261e and
>> 84805ef205b7fa12bfaa7b23da06993cab64c40b (see
>> <https://issues.guix.gnu.org/41177>):
>> 
>> --8<---------------cut 
>> here---------------start------------->8---
>> $ guix time-machine 
>> --commit=44425e1f2a96aee39a21dff634abb9b77b44261e
>> -- build openjdk -n 2,135.9 MB would be downloaded:
>>    /gnu/store/wd9jyzy7i2dxbxahc0pa8mq22any08zx-openjdk-9.181-jdk
>>    /gnu/store/7zxhm2xmyqds8hvlhifi9d16p9ln9k4b-openjdk-9.181
>>    /gnu/store/j5sh6c7qhm6vis6fvjyxs2jch9dhz085-openjdk-10.46-jdk
>>    /gnu/store/7w3vd4y0jac7d74gw62qmfv7br11k64r-openjdk-10.46
>>    /gnu/store/0sb9z8ds8ly7pwmviaqixq9wq1rp13g5-openjdk-11.28-jdk
>>    /gnu/store/4nf35d4v363bxrfmp85sk671swzmbj5k-openjdk-11.28
>>    /gnu/store/iwi28gcfxrsq541367m4hnp44jnnrkdq-openjdk-12.33-jdk
>>    /gnu/store/2w5gg7v9sy54s1jfnymgvg6qwqnkzr8h-openjdk-13.0-jdk
>>    /gnu/store/sgqw343zlqqn4vpdq4v9m4jy6ar9i99f-openjdk-14.0-doc
>>    /gnu/store/8l4pb8rh9zbqjn14ipbps7nn8wd0jg4w-openjdk-14.0-jdk
>>    /gnu/store/1d5bzdzrir8k13bkclx3a9cq59gw5j4h-openjdk-14.0
>> --8<---------------cut 
>> here---------------end--------------->8---
>> 
>> Björn, WDYT?  I suppose we need to filter out some library 
>> names in
>> ‘patch-jni-libs’?
>
> Ouch. While installing a JDK last week, I had the same feeling 
> that the
> dependency chain down was a bit too long, but then forgot to 
> look at it
> again. 
>
> When I read today Andreas' email, it popped up again ... I will 
> have a
> look at it.
>
>> While at it, we should add a #:disallowed-references keyword to
>> prevent that from popping up in the future.
>
> I wasn't aware of this and will also have a look.

Have you been able to identify what’s wrong with the JDK chain? 
I’d like us to drop these extra references soon so that they don’t 
appear in the upcoming release.

-- 
Ricardo