GNU bug report logs - #50879
[PATCH] scripts: home: Wire and document --expression flag.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Pierre Langlois <pierre.langlois <at> gmx.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#50879: closed ([PATCH] scripts: home: Wire and document
 --expression flag.)
Date: Sat, 02 Oct 2021 20:27:02 +0000

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Your message dated Sat, 02 Oct 2021 21:25:14 +0100
with message-id <87lf3b6un7.fsf <at> gmx.com>
and subject line Re: bug#50879: [PATCH] scripts: home: Wire and document --expression flag.
has caused the debbugs.gnu.org bug report #50879,
regarding [PATCH] scripts: home: Wire and document --expression flag.
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
50879: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=50879
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From: Pierre Langlois <pierre.langlois <at> gmx.com>
To: guix-patches <at> gnu.org
Subject: [PATCH] scripts: home: Wire and document --expression flag.
Date: Tue, 28 Sep 2021 23:06:06 +0100

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Hi Guix!

While testing out the new `guix home' command (congrats on merging it
btw!), I noticed the --expression flag was supported but not exposed. So
here's a patch :-).

OK to commit?

Thanks,
Pierre

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[0001-scripts-home-Wire-and-document-expression-flag.patch (text/x-patch, inline)]

From b40cab7892939f10cf366ee08b8a045a38e1fe78 Mon Sep 17 00:00:00 2001
From: Pierre Langlois <pierre.langlois <at> gmx.com>
Date: Tue, 28 Sep 2021 22:50:39 +0100
Subject: [PATCH] scripts: home: Wire and document --expression flag.

* guix/scripts/home.scm (show-help): Add --expression option.
(%options): Likewise.
* doc/guix.texi (Invoking guix home): Document it.
---
 doc/guix.texi         | 16 +++++++++++++++-
 guix/scripts/home.scm |  7 +++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/doc/guix.texi b/doc/guix.texi
index 3124ed2ef8..05d0d92b90 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -79,7 +79,7 @@ Copyright @copyright{} 2020 Jack Hill@*
 Copyright @copyright{} 2020 Naga Malleswari@*
 Copyright @copyright{} 2020, 2021 Brice Waegeneire@*
 Copyright @copyright{} 2020 R Veera Kumar@*
-Copyright @copyright{} 2020 Pierre Langlois@*
+Copyright @copyright{} 2020, 2021 Pierre Langlois@*
 Copyright @copyright{} 2020 pinoaffe@*
 Copyright @copyright{} 2020 André Batista@*
 Copyright @copyright{} 2020, 2021 Alexandru-Sergiu Marton@*
@@ -36090,6 +36090,20 @@ $ guix home list-generations 10d
 
 @end table
 
+@var{options} can contain any of the common build options (@pxref{Common
+Build Options}).  In addition, @var{options} can contain one of the
+following:
+
+@table @option
+
+@item --expression=@var{expr}
+@itemx -e @var{expr}
+Consider the home-environment @var{expr} evaluates to.
+This is an alternative to specifying a file which evaluates to a home
+environment.
+
+@end table
+
 @node Documentation
 @chapter Documentation
 
diff --git a/guix/scripts/home.scm b/guix/scripts/home.scm
index 75df6d707d..a466f3deb1 100644
--- a/guix/scripts/home.scm
+++ b/guix/scripts/home.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2021 Andrew Tropin <andrew <at> trop.in>
 ;;; Copyright © 2021 Xinglu Chen <public <at> yoctocell.xyz>
+;;; Copyright © 2021 Pierre Langlois <pierre.langlois <at> gmx.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -86,6 +87,9 @@ Some ACTIONS support additional ARGS.\n"))
 
   (show-build-options-help)
   (display (G_ "
+  -e, --expression=EXPR  consider the home-environment EXPR evaluates to
+                         instead of reading FILE, when applicable"))
+  (display (G_ "
   -v, --verbosity=LEVEL  use the given verbosity LEVEL"))
   (newline)
   (display (G_ "
@@ -115,6 +119,9 @@ Some ACTIONS support additional ARGS.\n"))
                    (let ((level (string->number* arg)))
                      (alist-cons 'verbosity level
                                  (alist-delete 'verbosity result)))))
+         (option '(#\e "expression") #t #f
+                 (lambda (opt name arg result)
+                   (alist-cons 'expression arg result)))
          %standard-build-options))
 
 (define %default-options
-- 
2.33.0

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From: Pierre Langlois <pierre.langlois <at> gmx.com>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: Pierre Langlois <pierre.langlois <at> gmx.com>, 50879-done <at> debbugs.gnu.org
Subject: Re: bug#50879: [PATCH] scripts: home: Wire and document
 --expression flag.
Date: Sat, 02 Oct 2021 21:25:14 +0100

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Ludovic Courtès <ludo <at> gnu.org> writes:

> Hi,
>
> Pierre Langlois <pierre.langlois <at> gmx.com> skribis:
>
>>>From b40cab7892939f10cf366ee08b8a045a38e1fe78 Mon Sep 17 00:00:00 2001
>> From: Pierre Langlois <pierre.langlois <at> gmx.com>
>> Date: Tue, 28 Sep 2021 22:50:39 +0100
>> Subject: [PATCH] scripts: home: Wire and document --expression flag.
>>
>> * guix/scripts/home.scm (show-help): Add --expression option.
>> (%options): Likewise.
>> * doc/guix.texi (Invoking guix home): Document it.
>
> LGTM, thanks!  :-)

Thanks for taking look :-). Pushed with
20bc9ecc204a610a0d5fa8b88c74421f57dbaf3b.

Pierre

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