[bug#41164] [PATCH 0/3] Add 'guix graph --path'

[Ludovic Courtès]

Hi,

zimoun <address@hidden> skribis:

> ./pre-inst-env guix graph --path -t references libreoffice llvm
> guix graph: error: no path from
> '/gnu/store/rd24gl402vy5g5sm3azhq13mwdg5fbi1-libreoffice-6.4.2.2' to
> '/gnu/store/bcgnx704v408sr7lcy480wcnbkcixwrw-llvm-10.0.0-opt-viewer'

There’s a path to llvm@9 though.

Such examples will of course bitrot over time because they depend on the
dependency graph, which keeps changing.  But that’s OK IMO: the goal is
just to give an idea of what the tool can do.

>> wording proposal in mind that is as concise?
>
> display the shortest path from node1 to node2

‘node1’ and ‘node2’ are undefined though…

>> As for ‘--path-to’ instead of ‘--path’: I think a path in common
>> language is directed (one follows a path from one place to another).
>
> My english is probably not enough good.  (Note that is the same for me
> with the french word "chemin".)
> To me, "path" is often ambiguous because sometimes it means oriented
> and sometimes not; depending on the context: topology, graph theory,
> common life: synonymous of road or track and synonymous of route or
> direction.
>
> This ambiguity added to the non positional option '--path' appears to
> me confusing from where to where.
>
> My 2 remarks come from this ambiguity of the word "path".
> Well, maybe it is only me.

I don’t know, but I’m still unconvinced that ‘--path-to’ is any better
than ‘--path’.  In the end, the intended audience consists of people who
know we’re talking about a DAG.

Thanks for your feedback!

Ludo’.