utils: Add 'every*'.

* guix/build/gnu-build-system.scm (every*): Move to...
* guix/build/utils.scm (every*): ... here.  New procedure.

guix/build/gnu-build-system.scm

@@ -409,18 +409,6 @@ (define (strip-dir dir)
                                        strip-directories)))
                          outputs))))
 
-(define (every* pred lst)
-  "This is like 'every', but process all the elements of LST instead of
-stopping as soon as PRED returns false.  This is useful when PRED has side
-effects, such as displaying warnings or error messages."
-  (let loop ((lst    lst)
-             (result #t))
-    (match lst
-      (()
-       result)
-      ((head . tail)
-       (loop tail (and (pred head) result))))))
-
 (define* (validate-runpath #:key
                            (validate-runpath? #t)
                            (elf-directories '("lib" "lib64" "libexec"

guix/build/utils.scm

@@ -59,10 +59,12 @@ (define-module (guix build utils)
             list->search-path-as-string
             which
 
+            every*
             alist-cons-before
             alist-cons-after
             alist-replace
             modify-phases
+
             with-atomic-file-replacement
             substitute
             substitute*
@@ -454,6 +456,18 @@ (define (which program)
 ;;; phases.
 ;;;
 
+(define (every* pred lst)
+  "This is like 'every', but process all the elements of LST instead of
+stopping as soon as PRED returns false.  This is useful when PRED has side
+effects, such as displaying warnings or error messages."
+  (let loop ((lst    lst)
+             (result #t))
+    (match lst
+      (()
+       result)
+      ((head . tail)
+       (loop tail (and (pred head) result))))))
+
 (define* (alist-cons-before reference key value alist
                             #:optional (key=? equal?))
   "Insert the KEY/VALUE pair before the first occurrence of a pair whose key