01/07: system: vm: Move operating-system-uuid.

[guix-commits]

mothacehe pushed a commit to branch master
in repository guix.

commit 78fbf2bd70e8af00a3ce5b05a5e25258e34f84cc
Author: Mathieu Othacehe <address@hidden>
AuthorDate: Tue Apr 28 14:12:34 2020 +0200

    system: vm: Move operating-system-uuid.
    
    * gnu/system/vm.scm (operating-system-uuid): Move to ...
    * gnu/system.scm: ... here.
---
 gnu/system.scm    | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 gnu/system/vm.scm | 48 ------------------------------------------------
 2 files changed, 50 insertions(+), 48 deletions(-)

diff --git a/gnu/system.scm b/gnu/system.scm
index 107b93d..0c5d5df 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -120,6 +120,7 @@
             operating-system-etc-directory
             operating-system-locale-directory
             operating-system-boot-script
+            operating-system-uuid
 
             system-linux-image-file-name
             operating-system-with-gc-roots
@@ -989,6 +990,55 @@ we're running in the final root."
                #:mapped-devices mapped-devices
                #:keyboard-layout (operating-system-keyboard-layout os)))
 
+(define* (operating-system-uuid os #:optional (type 'dce))
+  "Compute UUID object with a deterministic \"UUID\" for OS, of the given
+TYPE (one of 'iso9660 or 'dce).  Return a UUID object."
+  ;; Note: For this to be deterministic, we must not hash things that contains
+  ;; (directly or indirectly) procedures, for example.  That rules out
+  ;; anything that contains gexps, thunk or delayed record fields, etc.
+
+  (define service-name
+    (compose service-type-name service-kind))
+
+  (define (file-system-digest fs)
+    ;; Return a hashable digest that does not contain 'dependencies' since
+    ;; this field can contain procedures.
+    (let ((device (file-system-device fs)))
+      (list (file-system-mount-point fs)
+            (file-system-type fs)
+            (file-system-device->string device)
+            (file-system-options fs))))
+
+  (if (eq? type 'iso9660)
+      (let ((pad (compose (cut string-pad <> 2 #\0)
+                          number->string))
+            (h   (hash (map service-name (operating-system-services os))
+                       3600)))
+        (bytevector->uuid
+         (string->iso9660-uuid
+          (string-append "1970-01-01-"
+                         (pad (hash (operating-system-host-name os) 24)) "-"
+                         (pad (quotient h 60)) "-"
+                         (pad (modulo h 60)) "-"
+                         (pad (hash (map file-system-digest
+                                         (operating-system-file-systems os))
+                                    100))))
+         'iso9660))
+      (bytevector->uuid
+       (uint-list->bytevector
+        (list (hash (map file-system-digest
+                         (operating-system-file-systems os))
+                    (- (expt 2 32) 1))
+              (hash (operating-system-host-name os)
+                    (- (expt 2 32) 1))
+              (hash (map service-name (operating-system-services os))
+                    (- (expt 2 32) 1))
+              (hash (map file-system-digest (operating-system-file-systems os))
+                    (- (expt 2 32) 1)))
+        (endianness little)
+        4)
+       type)))
+
 (define (locale-name->definition* name)
   "Variant of 'locale-name->definition' that raises an error upon failure."
   (match (locale-name->definition name)
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index 6f81ac1..2fdf954 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -604,54 +604,6 @@ system."
 ;;; VM and disk images.
 ;;;
 
-(define* (operating-system-uuid os #:optional (type 'dce))
-  "Compute UUID object with a deterministic \"UUID\" for OS, of the given
-TYPE (one of 'iso9660 or 'dce).  Return a UUID object."
-  ;; Note: For this to be deterministic, we must not hash things that contains
-  ;; (directly or indirectly) procedures, for example.  That rules out
-  ;; anything that contains gexps, thunk or delayed record fields, etc.
-
-  (define service-name
-    (compose service-type-name service-kind))
-
-  (define (file-system-digest fs)
-    ;; Return a hashable digest that does not contain 'dependencies' since
-    ;; this field can contain procedures.
-    (let ((device (file-system-device fs)))
-      (list (file-system-mount-point fs)
-            (file-system-type fs)
-            (file-system-device->string device)
-            (file-system-options fs))))
-
-  (if (eq? type 'iso9660)
-      (let ((pad (compose (cut string-pad <> 2 #\0)
-                          number->string))
-            (h   (hash (map service-name (operating-system-services os))
-                       3600)))
-        (bytevector->uuid
-         (string->iso9660-uuid
-          (string-append "1970-01-01-"
-                         (pad (hash (operating-system-host-name os) 24)) "-"
-                         (pad (quotient h 60)) "-"
-                         (pad (modulo h 60)) "-"
-                         (pad (hash (map file-system-digest
-                                         (operating-system-file-systems os))
-                                    100))))
-         'iso9660))
-      (bytevector->uuid
-       (uint-list->bytevector
-        (list (hash (map file-system-digest
-                         (operating-system-file-systems os))
-                    (- (expt 2 32) 1))
-              (hash (operating-system-host-name os)
-                    (- (expt 2 32) 1))
-              (hash (map service-name (operating-system-services os))
-                    (- (expt 2 32) 1))
-              (hash (map file-system-digest (operating-system-file-systems os))
-                    (- (expt 2 32) 1)))
-        (endianness little)
-        4)
-       type)))
 
 (define* (system-disk-image os
                             #:key