From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Goals for 0.4
Date: Fri, 30 Aug 2013 20:31:20 +0200
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In-Reply-To: <87bo4fcbcz.fsf@karetnikov.org> (Nikita Karetnikov's message of
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To: Nikita Karetnikov <nikita@karetnikov.org>
Cc: guix-devel@gnu.org

Nikita Karetnikov <nikita@karetnikov.org> skribis:

>>>> =E2=80=A2 New =E2=80=98--list-generations=E2=80=99 and =E2=80=98--dele=
te-generations=E2=80=99 options for
>>>>   =E2=80=98guix package=E2=80=99.
>
> I=E2=80=99ve been thinking about these options, and I=E2=80=99m not sure =
how they should
> work.
>
> Will it be enough to output a generation number and a list of packages
> when =E2=80=98--list-generations=E2=80=99 is used?  For example:
>
> Generation 1:
> guile	2.0.9	out,debug	gnu/packages/base.scm:1022:33
> guile-bootstrap	2.0	out	gnu/packages/bootstrap.scm:191:3
>
> Generation 2:
> hello	2.8	out	gnu/packages/base.scm:50:2

Perhaps there could be several formats.  For instance,
--list-generations would be equivalent to --list-generations=3Dshort:

  generation 1     Dec. 16 2013
  generation 2     May 7 2013

And then --list-generations=3Dlong would do something like:

  generation 1	   Dec. 16 2013
    guile    2.0.7 out,debug    gnu/packages/guile.scm
    hello    2.8   out          gnu/packages/base.scm

  generation 2     May 7 2013
    guile    2.0.9 out          gnu/packages/guile.scm

WDYT?

> I think we could add =E2=80=98--from=E2=80=99 and =E2=80=98--to=E2=80=99 =
that have to be used with the
> mentioned options:
>
> $ guix package --delete-generations 1 3 8
> Deleting generations 1, 3, 8...
>
> $ guix package --delete-generations --from=3D4 --to=3D8
> Deleting generations from 4 to 8...

Rather, I would do:

  --delete-generations=3D3..9

It=E2=80=99s easier to parse and to type.

Likewise, it could even support:

  --delete-generations=3D1month

> Also, I=E2=80=99d like to remove the dash from =E2=80=98--roll-back=E2=80=
=99 since =E2=80=98--fallback=E2=80=99
> is written without one.
>
> What do you think?

I=E2=80=99ll have to disagree.  :-)

There=E2=80=99s no such verb as =E2=80=9Crollback=E2=80=9D, I think, wherea=
s =E2=80=9Cfallback=E2=80=9D is a
valid noun (and we don=E2=80=99t have the choice for =E2=80=9Cfallback=E2=
=80=9D, since there are
messages in the daemon that mention it.)

Now, if you had --rollback as an alias, I won=E2=80=99t scream either...

Ludo=E2=80=99.