GNU logs - #50473, boring messages

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Subject: bug#50473: Unordered =?UTF-8?Q?=E2=80=99%actions=E2=80=99?= process from =?UTF-8?Q?=E2=80=99guix_?= =?UTF-8?Q?package=E2=80=99?=
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Hi,

Let consider:

    $ guix package -S 17 -d 18

but 

    $ guix package -d 18 -S 17

does not the same thing.  The '%actions' (roll-back, delete-generation,
switch-generation) are processed in reversed order as they appear on the
command-line -- because 'for-each' and 'assoc-ref'.

However, the transaction plan is always the same:

   step0 process %actions
   step1 remove
   step2 install
   step3 manifest

Therefore, I propose to split the 'for-each' on '%actions' (step0) into
fixed steps, such as the transaction always happens using this plan:

 1. roll-back
 2. switch-generation
 3. delete-generation
 4. remove
 5. install
 6. manifest

whatever the order in the command line.

On one hand, it reduces the "power" of combining '-S', '-d' and
'--roll-back'.  On the other hand, it enforces commutativity which is
somehow what we want a transaction to be.

WDYT?  I can come up with a patch.  This initial issue had been reported
by bug#40549 [1].

(Note that an issue about short-name with optional argument can also
happen and tracked by bug#50472 [2].)

All the best,
simon

1: <http://issues.guix.gnu.org/40549>
2: <http://issues.guix.gnu.org/50472>

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To: zimoun <zimon.toutoune@HIDDEN>
Subject: bug#50473: Acknowledgement (Unordered =?UTF-8?Q?=E2=80=99%actions=E2=80=99?=
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50473: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D50473
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retitle 50473 'guix package' processes command-line %actions in reverse
thanks

('Failed to set the title of 50473: Non-printable characters are not 
allowed in bug titles.' -- FFS...)

Last modified: Wed, 8 Sep 2021 13:30:02 UTC

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