bug#31719: Chains of dependencies getting longer

[Andreas Enge]

Hello,

Am Mon, Mar 01, 2021 at 11:04:02AM +0100 schrieb Ludovic Courtès:
> Andreas Enge <andreas@enge.fr> skribis:
> > trying a "guix build openjdk", I see this:
> > 2136.0 MB would be downloaded
...
> >    /gnu/store/ymyvcc0871lwbnkv5acf5lldv0ahm5z1-openjdk-9.181-jdk
> >    /gnu/store/3hb80r2l48ix8pq2kvcsr1i9aj76d681-openjdk-9.181
...
> >    /gnu/store/bjvy5ab6f0gff52m808vzcn3rw55yxjn-openjdk-14.0-doc
> >    /gnu/store/r8kxk031fighc4dxr57nl0wirzhk8v08-openjdk-14.0-jdk
> >    /gnu/store/25kx1vna763xh4mpszp4p4sy4j6iifs3-openjdk-14.0
> 
> Weird.  I see this:
> 
> --8<---------------cut here---------------start------------->8---
> $ guix build openjdk -n
> 369.8 MB would be downloaded:
>    /gnu/store/676kcvxnnjfcy960fy4xkr10fbn3ciay-openjdk-14.0-doc
>    /gnu/store/dk8rkrfkdgsmy1a33n0sc39fhqggy1nh-openjdk-14.0-jdk
>    /gnu/store/ylakfs5fwq5sqsk5zbkwwf2d1lp0jfxs-openjdk-14.0

It is strange we do not see the same thing! I just tried it again, and am
getting the same result as above. Notice that openjdk@14 is available as a
substitute, but still all previous versions are downloaded, while nothing
is built. The same with the most recent master commit (7ca43b0a1e).

Andreas