GNU bug report logs - #43585
Order in manifest and command-line differs

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: zimoun <zimon.toutoune <at> gmail.com>
To: bug-guix <at> gnu.org
Subject: Order in manifest and command-line differs
Date: Thu, 24 Sep 2020 01:38:46 +0200

Dear,

It is probably more a feature than a bug (and it is expected, I guess).
However, it can be misleading.  For example,

--8<---------------cut here---------------start------------->8---
$ guix package -i busybox diffutils -p /tmp/foo
$ ls -l /tmp/foo/bin
[..]
 df -> /gnu/store/…-busybox-1.31.1/bin/df
 diff -> /gnu/store/…-diffutils-3.7/bin/diff
 diff3 -> /gnu/store/…-diffutils-3.7/bin/diff3
 dirname -> /gnu/store/…-busybox-1.31.1/bin/dirname
[..]
--8<---------------cut here---------------end--------------->8---

And the same result is obtained with the manifest.scm file:

--8<---------------cut here---------------start------------->8---
(specifications->manifest '("diffutils" "busybox"))
--8<---------------cut here---------------end--------------->8---


This difference could be counter-intuitive.  One of the two lists should
be internally reverse’d.  WDYT?


(Even if it is a corner-case, 2 packages providing the same tool, but it
matters for <profile>/manifest.)

All the best,
simon

Message #8 received at 43585 <at> debbugs.gnu.org (full text, mbox):

From: Mathieu Othacehe <othacehe <at> gnu.org>
To: zimoun <zimon.toutoune <at> gmail.com>
Cc: 43585 <at> debbugs.gnu.org
Subject: Re: bug#43585: Order in manifest and command-line differs
Date: Thu, 24 Sep 2020 15:08:38 +0200

Hello zimoun,

> $ guix package -i busybox diffutils -p /tmp/foo
> $ ls -l /tmp/foo/bin
> [..]
>  df -> /gnu/store/…-busybox-1.31.1/bin/df
>  diff -> /gnu/store/…-diffutils-3.7/bin/diff
>  diff3 -> /gnu/store/…-diffutils-3.7/bin/diff3
>  dirname -> /gnu/store/…-busybox-1.31.1/bin/dirname
> [..]

The order of what appears in "bin" depends on both the name of the
binaries provided by both packages and also how the "ls" command decides
to sort its output. I'm not sure that much can be done here.

Thanks,

Mathieu

Message #11 received at 43585 <at> debbugs.gnu.org (full text, mbox):

From: zimoun <zimon.toutoune <at> gmail.com>
To: Mathieu Othacehe <othacehe <at> gnu.org>
Cc: 43585 <at> debbugs.gnu.org
Subject: Re: bug#43585: Order in manifest and command-line differs
Date: Thu, 24 Sep 2020 16:08:06 +0200

Hi Mathieu,

On Thu, 24 Sep 2020 at 15:08, Mathieu Othacehe <othacehe <at> gnu.org> wrote:

> The order of what appears in "bin" depends on both the name of the
> binaries provided by both packages and also how the "ls" command decides
> to sort its output. I'm not sure that much can be done here.

I have badly worded.  The point is that "diffutils" and "busybox"
provide both the 'diff' binary.  Therefore, depending on the order,
'diff' is provided by one or the other.  Compare:

    guix package -i busybox diffutils -p /tmp/busybox-diffutils
   /tmp/busybox-diffutils/bin/diff

and

    guix package -i diffutils busybox -p /tmp/diffutils-busybox
   /tmp/diffutils-busybox/bin/diff

In the same time, compare the manifest.scm files:

--8<---------------cut here---------------start------------->8---
  ;;; busybox-diffutils.scm
  (specifications->manifest '("busybox" "diffutils"))

  ;;; diffutils-busybox.scm
  (specifications->manifest '("diffutils" "busybox"))
--8<---------------cut here---------------end--------------->8---

then

    guix package -m busybox-diffutils.scm -p /tmp/busybox-diffutils-m
   /tmp/busybox-diffutils-m/bin/diff

and

    guix package -m diffutils-busybox.scm -p /tmp/diffutils-busybox-m
   /tmp/diffutils-busybox-m/bin/diff


Concretely, "guix package" processes command-line arguments from right
to left.  And the manifest.scm file read the list in order (so from
left to right).

All the best,
simon

PS:
For another example not related:

$ guix package --show=diffutils --show=busybox | recsel -C -p name
name: busybox
name: diffutils

and  "guix show" corrects that, processing from left to right.

$ guix show diffutils busybox | recsel -C -p name
name: diffutils
name: busybox

Message #14 received at 43585 <at> debbugs.gnu.org (full text, mbox):

From: Mathieu Othacehe <othacehe <at> gnu.org>
To: zimoun <zimon.toutoune <at> gmail.com>
Cc: 43585 <at> debbugs.gnu.org
Subject: Re: bug#43585: Order in manifest and command-line differs
Date: Fri, 25 Sep 2020 13:54:19 +0200

Hey zimoun,

Oh I see, thanks for explaining!

It would be nice if the `guix package -i` command could also operate
from left to right then.  Would you like to give it a try?

Thanks,

Mathieu
-- 
https://othacehe.org

Message #17 received at 43585 <at> debbugs.gnu.org (full text, mbox):

From: zimoun <zimon.toutoune <at> gmail.com>
To: Mathieu Othacehe <othacehe <at> gnu.org>
Cc: 43585 <at> debbugs.gnu.org
Subject: Re: bug#43585: Order in manifest and command-line differs
Date: Wed, 31 Mar 2021 15:13:09 +0200

Hi,

On Fri, 25 Sep 2020 at 13:54, Mathieu Othacehe <othacehe <at> gnu.org> wrote:

> It would be nice if the `guix package -i` command could also operate
> from left to right then.  Would you like to give it a try?

I will not do.  I am not interested any more.  Closing?

Cheers,
simon

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