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gexp: Allow file-unions with dangling symlinks.

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* guix/gexp.scm (file-union): Add #:dangling-symlinks? parameter.

Change-Id: I09d44ec785fd7141b02dee2d8dc23ccc499aa933
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
This commit is contained in:
Sergey Trofimov
2025-05-19 11:50:08 +02:00
committed by Maxim Cournoyer
parent 93e74686ea
commit 9b7213fc11
2 changed files with 30 additions and 27 deletions
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12
doc/guix.texi
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@@ -12673,11 +12673,13 @@ as in:
This is the declarative counterpart of @code{text-file*}.
@end deffn
@deffn {Procedure} file-union name files
Return a @code{<computed-file>} that builds a directory containing all of @var{files}.
Each item in @var{files} must be a two-element list where the first element is the
file name to use in the new directory, and the second element is a gexp
denoting the target file. Here's an example:
@deffn {Procedure} file-union name files [#:dangling-symlinks? #f]
Return a @code{<computed-file>} that builds a directory containing all
of @var{files}. Each item in @var{files} must be a two-element list
where the first element is the file name to use in the new directory,
and the second element is a gexp denoting the target file.
@code{#:dangling-symlinks?} controls if gexps must lower to an existing
file. Here's an example:
@lisp
(file-union "etc"