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-rw-r--r--guix/store.scm13
-rw-r--r--tests/store.scm7
2 files changed, 19 insertions, 1 deletions
diff --git a/guix/store.scm b/guix/store.scm
index 909ef195de..58f7e36762 100644
--- a/guix/store.scm
+++ b/guix/store.scm
@@ -57,6 +57,7 @@
set-build-options
valid-path?
query-path-hash
+ hash-part->path
add-text-to-store
add-to-store
build-derivations
@@ -501,6 +502,18 @@ encoding conversion errors."
"Return the SHA256 hash of PATH as a bytevector."
base16)
+(define hash-part->path
+ (let ((query-path-from-hash-part
+ (operation (query-path-from-hash-part (string hash))
+ #f
+ store-path)))
+ (lambda (server hash-part)
+ "Return the store path whose hash part is HASH-PART (a nix-base32
+string). Raise an error if no such path exists."
+ ;; This RPC is primarily used by Hydra to reply to HTTP GETs of
+ ;; /HASH.narinfo.
+ (query-path-from-hash-part server hash-part))))
+
(define add-text-to-store
;; A memoizing version of `add-to-store', to avoid repeated RPCs with
;; the very same arguments during a given session.
diff --git a/tests/store.scm b/tests/store.scm
index 8a25c7353b..78023a423d 100644
--- a/tests/store.scm
+++ b/tests/store.scm
@@ -87,7 +87,12 @@
(%store-prefix)
"/283gqy39v3g9dxjy26rynl0zls82fmcg-guile-2.0.7/bin/guile")))))
-(test-skip (if %store 0 10))
+(test-skip (if %store 0 11))
+
+(test-assert "hash-part->path"
+ (let ((p (add-text-to-store %store "hello" "hello, world")))
+ (equal? (hash-part->path %store (store-path-hash-part p))
+ p)))
(test-assert "dead-paths"
(let ((p (add-text-to-store %store "random-text" (random-text))))