Bash-completion is written with FHS in mind where completion scripts
all get added to /usr/share/bash-completion/completions and are picked
up by the dynamic completion loader from there---whether they are
part of bash-completion or installed by another package.

On Guix systems, we want not only to search within bash-completion's own
directory, but also in the user's profile and in the system profile.
This is what this patch does.


--- a/bash_completion
+++ b/bash_completion
@@ -2016,7 +2016,13 @@ complete -F _minimal ''
 
 __load_completion()
 {
-    local -a dirs=( ${BASH_COMPLETION_USER_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/bash-completion}/completions )
+    local -a dirs=(
+        "$HOME/.guix-profile/share/bash-completion/completions/$base"
+        "$HOME/.guix-profile/etc/bash_completion.d/$base"
+        "/run/current-system/profile/share/bash-completion/completions/$base"
+        "/run/current-system/profi</td></tr></table>
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