services: replace bare serializers with (serializer ...)

* gnu/home/services/shells.scm
(home-zsh-configuration)[environment-variables]: Use (serializer ...).
(home-bash-configuration)[aliases, environment-variables]: Likewise.
(home-fish-configuration)[abbreviations, aliases]
[environment-variables]: Likewise.
* gnu/services/audio.scm (mpd-configuration)[music-dir, playlist-dir]
[endpoints, address, inputs, archive-plugins, input-cache-size]
[decoders, filters, playlist-plugins]: Likewise.
* gnu/services/linux.scm (fstrim-configuration)[extra-arguments]:
Likewise.
* gnu/services/security.scm (fail2ban-jail-configuration)[backend]
[log-encoding, extra-content]: Likewise.
* tests/services/configuration.scm: Update tests.
("serialize-configuration [deprecated]"): New test.

Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/tests/services/configuration.scm b/tests/services/configuration.scm
index 0392cce927..8ad5907f37 100644
--- a/tests/services/configuration.scm
+++ b/tests/services/configuration.scm
@@ -82,6 +82,9 @@
   (format #f "~a = ~a;" name value))
 
 (define-configuration serializable-configuration
+  (port (number 80) "The port number." (serializer custom-number-serializer)))
+
+(define-configuration serializable-configuration-deprecated
   (port (number 80) "The port number." custom-number-serializer))
 
 (test-assert "serialize-configuration"
@@ -89,8 +92,14 @@
    (let ((config (serializable-configuration)))
      (serialize-configuration config serializable-configuration-fields))))
 
+(test-assert "serialize-configuration [deprecated]"
+  (gexp?
+   (let ((config (serializable-configuration-deprecated)))
+     (serialize-configuration
+      config serializable-configuration-deprecated-fields))))
+
 (define-configuration serializable-configuration
-  (port (number 80) "The port number." custom-number-serializer)
+  (port (number 80) "The port number." (serializer custom-number-serializer))
   (no-serialization))
 
 (test-assert "serialize-configuration with no-serialization"