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-rw-r--r--guix/profiles.scm5
-rw-r--r--tests/profiles.scm5
2 files changed, 10 insertions, 0 deletions
diff --git a/guix/profiles.scm b/guix/profiles.scm
index cd3b21e390..f5e5cc33d6 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -92,6 +92,7 @@
manifest-pattern-version
manifest-pattern-output
+ concatenate-manifests
manifest-remove
manifest-add
manifest-lookup
@@ -515,6 +516,10 @@ procedure is here for backward-compatibility and will eventually vanish."
"Return the packages listed in MANIFEST."
(sexp->manifest (read port)))
+(define (concatenate-manifests lst)
+ "Concatenate the manifests listed in LST and return the resulting manifest."
+ (manifest (append-map manifest-entries lst)))
+
(define (entry-predicate pattern)
"Return a procedure that returns #t when passed a manifest entry that
matches NAME/OUTPUT/VERSION. OUTPUT and VERSION may be #f, in which case they
diff --git a/tests/profiles.scm b/tests/profiles.scm
index a4e28672b5..21c912a532 100644
--- a/tests/profiles.scm
+++ b/tests/profiles.scm
@@ -113,6 +113,11 @@
(manifest-matching-entries m (list p))
#f)))
+(test-equal "concatenate-manifests"
+ (manifest (list guile-2.0.9 glibc))
+ (concatenate-manifests (list (manifest (list guile-2.0.9))
+ (manifest (list glibc)))))
+
(test-assert "manifest-remove"
(let* ((m0 (manifest (list guile-2.0.9 guile-2.0.9:debug)))
(m1 (manifest-remove m0