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05/05: doc: Add example of 'bash-extension'.

From: guix-commits
Subject: 05/05: doc: Add example of 'bash-extension'.
Date: Wed, 13 Jul 2022 19:09:21 -0400 (EDT)

civodul pushed a commit to branch master
in repository guix.

commit 5f8adea86cac1e0b126b181a4d3cc67c0503f43b
Author: Ludovic Courtès <>
AuthorDate: Thu Jul 14 01:04:59 2022 +0200

    doc: Add example of 'bash-extension'.
    * doc/guix.texi (Shells Home Services): Add 'bash-extension' example.
 doc/guix.texi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/doc/guix.texi b/doc/guix.texi
index a7ac74b416..8b09bcd4eb 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -39663,6 +39663,23 @@ contents of the extensions will be added to the end of 
the corresponding
 Bash configuration files (@pxref{Bash Startup Files,,, bash, The GNU
 Bash Reference Manual}.
+For example, here is how you would define a service that extends the
+Bash service such that @file{~/.bash_profile} defines an additional
+environment variable, @env{PS1}:
+(define bash-fancy-prompt-service
+  (simple-service 'bash-fancy-prompt
+                  home-bash-service-type
+                  (home-bash-extension
+                   (environment-variables
+                    '(("PS1" . "\\u \\wλ "))))))
+@end lisp
+You would then add @code{bash-fancy-prompt-service} to the list in the
+@code{services} field of your @code{home-environment}.  The reference of
+@code{home-bash-extension} follows.
 @deftp {Data Type} home-bash-extension
 Available @code{home-bash-extension} fields are:

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