From dedb512f8f2282f7de3d5b56e7551e486e37840c Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Mon, 16 Oct 2017 09:57:44 +0200 Subject: gexp: Add 'file-union'. * gnu/services.scm (file-union): Move to... * guix/gexp.scm (file-union): ... here. New procedure. * doc/guix.texi (G-Expressions): Document it. --- doc/guix.texi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'doc/guix.texi') diff --git a/doc/guix.texi b/doc/guix.texi index 2ccba98092..ce8b977e1b 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -4990,6 +4990,23 @@ as in: This is the declarative counterpart of @code{text-file*}. @end deffn +@deffn {Scheme Procedure} file-union @var{name} @var{files} +Return a @code{} 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: + +@example +(file-union "etc" + `(("hosts" ,(plain-file "hosts" + "127.0.0.1 localhost")) + ("bashrc" ,(plain-file "bashrc" + "alias ls='ls --color'")))) +@end example + +This yields an @code{etc} directory containing these two files. +@end deffn + @deffn {Scheme Procedure} file-append @var{obj} @var{suffix} @dots{} Return a file-like object that expands to the concatenation of @var{obj} and @var{suffix}, where @var{obj} is a lowerable object and each -- cgit v1.2.3