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-rw-r--r--guix/store.scm28
-rw-r--r--tests/store.scm26
2 files changed, 53 insertions, 1 deletions
diff --git a/guix/store.scm b/guix/store.scm
index 3627d5be04..80b36daf93 100644
--- a/guix/store.scm
+++ b/guix/store.scm
@@ -66,6 +66,10 @@
substitutable-paths
substitutable-path-info
+ references
+ referrers
+ valid-derivers
+ query-derivation-outputs
live-paths
dead-paths
collect-garbage
@@ -126,7 +130,8 @@
(query-path-from-hash-part 29)
(query-substitutable-path-infos 30)
(query-valid-paths 31)
- (query-substitutable-paths 32))
+ (query-substitutable-paths 32)
+ (query-valid-derivers 33))
(define-enumerate-type hash-algo
;; hash.hh
@@ -597,6 +602,27 @@ name--it is the caller's responsibility to ensure that it is an absolute
file name. Return #t on success."
boolean)
+(define references
+ (operation (query-references (store-path path))
+ "Return the list of references of PATH."
+ store-path-list))
+
+(define referrers
+ (operation (query-referrers (store-path path))
+ "Return the list of path that refer to PATH."
+ store-path-list))
+
+(define valid-derivers
+ (operation (query-valid-derivers (store-path path))
+ "Return the list of valid \"derivers\" of PATH---i.e., all the
+.drv present in the store that have PATH among their outputs."
+ store-path-list))
+
+(define query-derivation-outputs ; avoid name clash with `derivation-outputs'
+ (operation (query-derivation-outputs (store-path path))
+ "Return the list of outputs of PATH, a .drv file."
+ store-path-list))
+
(define-operation (has-substitutes? (store-path path))
"Return #t if binary substitutes are available for PATH, and #f otherwise."
boolean)
diff --git a/tests/store.scm b/tests/store.scm
index c90fd3fed9..c2de99e160 100644
--- a/tests/store.scm
+++ b/tests/store.scm
@@ -23,6 +23,7 @@
#:use-module (guix base32)
#:use-module (guix packages)
#:use-module (guix derivations)
+ #:use-module (gnu packages)
#:use-module (gnu packages bootstrap)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
@@ -79,6 +80,31 @@
(> freed 0)
(not (file-exists? p))))))
+(test-assert "references"
+ (let* ((t1 (add-text-to-store %store "random1"
+ (random-text) '()))
+ (t2 (add-text-to-store %store "random2"
+ (random-text) (list t1))))
+ (and (equal? (list t1) (references %store t2))
+ (equal? (list t2) (referrers %store t1))
+ (null? (references %store t1))
+ (null? (referrers %store t2)))))
+
+(test-assert "derivers"
+ (let* ((b (add-text-to-store %store "build" "echo $foo > $out" '()))
+ (s (add-to-store %store "bash" #t "sha256"
+ (search-bootstrap-binary "bash"
+ (%current-system))))
+ (d (derivation %store "the-thing" (%current-system)
+ s `("-e" ,b) `(("foo" . ,(random-text)))
+ `((,b) (,s))))
+ (o (derivation-path->output-path d)))
+ (and (build-derivations %store (list d))
+ (equal? (query-derivation-outputs %store d)
+ (list o))
+ (equal? (valid-derivers %store o)
+ (list d)))))
+
(test-assert "no substitutes"
(let* ((s (open-connection))
(d1 (package-derivation s %bootstrap-guile (%current-system)))