[bug#69343] [PATCH v3 09/12] Give a separate name to a commonly used expression.

[Lilah Tascheter via Guix-patches <guix-patches@gnu.org>]

From: Felix Lechner <felix.lechner@lease-up.com>

* gnu/machine/ssh.scm (roll-back-managed-host): Factor out a
  subexpression into new variable parameters.

Change-Id: I8d70684142bea736042d6c9dc8276ea7bdb9c181
---
 gnu/machine/ssh.scm | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/gnu/machine/ssh.scm b/gnu/machine/ssh.scm
index 75b02bff50..fa1066b27b 100644
--- a/gnu/machine/ssh.scm
+++ b/gnu/machine/ssh.scm
@@ -582,14 +582,11 @@ (define (roll-back-managed-host machine)
   (mlet* %store-monad ((boot-alternatives (machine->boot-alternatives machine))
                        (_ -> (if (< (length boot-alternatives) 2)
                                  (raise roll-back-failure)))
-                       (entries -> (map boot-parameters->menu-entry
-                                        (list (second boot-alternatives))))
-                       (locale -> (boot-parameters-locale
-                                   (second boot-alternatives)))
-                       (crypto-dev -> (boot-parameters-store-crypto-devices
-                                       (second boot-alternatives)))
-                       (store-dir -> (boot-parameters-store-directory-prefix
-                                      (second boot-alternatives)))
+                       (parameters (second boot-alternatives))
+                       (entries -> (list (boot-parameters->menu-entry parameters)))
+                       (locale -> (boot-parameters-locale parameters))
+                       (crypto-dev -> (boot-parameters-store-crypto-devices parameters))
+                       (store-dir -> (boot-parameters-store-directory-prefix parameters))
                        (old-entries -> (map boot-parameters->menu-entry
                                             (drop boot-alternatives 2)))
                        (bootloader -> (operating-system-bootloader
-- 
2.45.2