From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: New =?utf-8?B?4oCYZ3VpeCBncmFwaOKAmQ==?= command
Date: Thu, 27 Aug 2015 13:26:37 +0200
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To: Mathieu Lirzin <mthl@openmailbox.org>
Cc: Guix-devel <Guix-devel@gnu.org>

Mathieu Lirzin <mthl@openmailbox.org> skribis:

> Nice job, It is really convenient to have such utility.
>
> Does it sound feasible to produce different edge colors depending of the =
type
> of inputs?

Of course!  But this is left as an exercise to the reader.  :-)

Similarly, I thought we could use different color boxes based on the
size of a store item, for the =E2=80=98references=E2=80=99 DAGs.

It =E2=80=9Cjust needs=E2=80=9D adding an attribute argument to the =E2=80=
=98emit-node=E2=80=99 and
=E2=80=98emit-edges=E2=80=99 hooks of <graph-backend>.  I don=E2=80=99t pla=
n to work on it in
the near future but would definitely welcome patches.

> Not really important, but IMO it would be clearer to define bag-emerged
> in terms of what bag is doing with something like this.
>
> =E2=80=98bag=E2=80=99=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
>      This is the package DAG, _including_ implicit inputs.=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20
>=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
> =E2=80=98bag-emerged=E2=80=99=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20
>      Similar to =E2=80=98bag=E2=80=99, but this time without all the boot=
strap
>      dependencies.
>
>      For instance, the following command:=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
>=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
>           guix graph --type=3Dbag-emerged coreutils | dot -Tpdf > dag.pdf=
=20
>=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
>      [...]
>
> What do you think?

Perhaps this isn=E2=80=99t very clear but I wanted to list the graph types =
in
order of increasing complexity, which is why =E2=80=98bag=E2=80=99 comes af=
ter
=E2=80=98bag-emerged=E2=80=99.  Dunno if something needs to be changed; tho=
ughts?

Thanks,
Ludo=E2=80=99.