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scripts: home: Wire and document --expression flag.

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* guix/scripts/home.scm (show-help): Add --expression option.
(%options): Likewise.
* doc/guix.texi (Invoking guix home): Document it.
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Pierre Langlois 2021-09-28 22:50:39 +01:00
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commit 20bc9ecc20
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16
doc/guix.texi
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@ -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@*
@ -36093,6 +36093,20 @@ $ 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

7
guix/scripts/home.scm
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@ -1,6 +1,7 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2021 Pierre Langlois <pierre.langlois@gmx.com>
;;;
;;; This file is part of GNU Guix.
;;;
@ -86,6 +87,9 @@ (define (show-help)
(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 @@ (define %options
(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