Fix

system/clients/otto.scm

@@ -1,6 +1,6 @@
 (use-modules
   (gnu)
-  (base-system)
+  (system base-system)
   (gnu packages tex)
   (nongnu packages mozilla)
   (nongnu packages nvidia)

system/clients/patrache.scm

@@ -1,6 +1,6 @@
 (use-modules
   (gnu)
-  (base-system)
+  (system base-system)
   (gnu packages tex)
   (nongnu packages mozilla)
   (gnu packages networking)

system/servers/base.scm

@@ -1,4 +1,4 @@
-(use-modules (gnu) (base-system))
+(use-modules (gnu) (system base-system))
 
 (operating-system
   (inherit base-server-system)

system/servers/hypervisor.scm

@@ -1,4 +1,4 @@
-(use-modules (base-system)
+(use-modules (system base-system)
              (guix gexp)
              (guix records)
              (gnu packages virtualization)

system/servers/kadmin.scm

@@ -1,4 +1,4 @@
-(use-modules (base-system)
+(use-modules (system base-system)
              (guix records)
              (guix gexp)
              (gnu packages admin)

system/servers/ldap.scm

@@ -1,4 +1,4 @@
-(use-modules (base-system)
+(use-modules (system base-system)
              (gnu build activation)
              (gnu services authentication)
              (gnu packages openldap)