Add more missing (ice-9 format) imports.

* gnu/machine/ssh.scm: Import (ice-9 format).
* guix/scripts/graph.scm: Likewise.
* guix/scripts/system/search.scm: Likewise.
* guix/remote.scm: Likewise.

gnu/machine/ssh.scm

@@ -37,6 +37,7 @@
   #:use-module (guix store)
   #:use-module (guix utils)
   #:use-module (gcrypt pk-crypto)
+  #:use-module (ice-9 format)
   #:use-module (ice-9 match)
   #:use-module (ice-9 textual-ports)
   #:use-module (srfi srfi-1)

guix/remote.scm

@@ -31,6 +31,7 @@
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-34)
   #:use-module (srfi srfi-35)
+  #:use-module (ice-9 format)
   #:use-module (ice-9 match)
   #:export (remote-eval))
 

guix/scripts/graph.scm

@@ -43,6 +43,7 @@
   #:use-module (srfi srfi-34)
   #:use-module (srfi srfi-35)
   #:use-module (srfi srfi-37)
+  #:use-module (ice-9 format)
   #:use-module (ice-9 match)
   #:export (%package-node-type
             %reverse-package-node-type

guix/scripts/system/search.scm

@@ -26,6 +26,7 @@
   #:use-module (srfi srfi-11)
   #:use-module (srfi srfi-26)
   #:use-module (srfi srfi-34)
+  #:use-module (ice-9 format)
   #:use-module (ice-9 regex)
   #:use-module (ice-9 match)
   #:export (service-type->recutils