Subject: [PATCH] services: network-manager: Handle existing configuration directory.

From: 45mg <[email-masked]>
Date: Sun, 2 Mar 2025 23:59:49 +0530

* gnu/services/networking.scm (network-manager-activation):
Handle the case where /etc/NetworkManager/conf.d already exists.

Change-Id: I7af4f4ad226eef28bd8667f0708525e77a6a50c8
---
Follow-up to 0caba8f5db48c15a2c3edae37e816654246fa986.

This issue only became apparent after pulling the above commit, changing my
system config to use the new extra-files field, and reconfiguring /twice/. This
sort of thing is why I now pull from a local fork and apply patches to it before
submitting them ;)

 gnu/services/networking.scm | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/gnu/services/networking.scm b/gnu/services/networking.scm
index 53840c2764..45efea330b 100644
--- a/gnu/services/networking.scm
+++ b/gnu/services/networking.scm
@@ -1271,7 +1271,18 @@ (define (network-manager-activation config)
                '((mkdir-p "/var/lib/misc"))
                '())
         #$@(if (pair? extra-configuration-files)  ;if non-empty
-               `((symlink
+               ;; If /etc/NetworkManager/conf.d is a symlink to a store file,
+               ;; delete it.
+               `((if (and (file-exists? "/etc/NetworkManager/conf.d")
+                          (store-file-name?
+                           (canonicalize-path "/etc/NetworkManager/conf.d")))
+                     (delete-file-recursively
+                      "/etc/NetworkManager/conf.d"))
+                 ;; If it exists but is not a symlink to a store file, then
+                 ;; this will fail with EEXIST; we leave this for the user to
+                 ;; handle, since they probably created the directory
+                 ;; themselves.
+                 (symlink
                   ,(file-union "network-manager-configuration-directory"
                                extra-configuration-files)
                   "/etc/NetworkManager/conf.d"))

base-commit: f9dcb84550b85aa816899b2106b1a5ae546167a3
-- 
2.48.1