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authorLudovic Courtès <ludo@gnu.org>2016-11-13 22:59:54 +0100
committerLudovic Courtès <ludo@gnu.org>2016-11-16 18:19:54 +0100
commitf9aefa2d5fb3f6aad25a907939ee872c828b33d0 (patch)
tree51c87ff2ca17cb4aabf456446a14c43446956219 /guix/store.scm
parent94d92c7796a3dd50c27d532315f7d497ac99f08e (diff)
downloadguix-f9aefa2d5fb3f6aad25a907939ee872c828b33d0.tar
guix-f9aefa2d5fb3f6aad25a907939ee872c828b33d0.tar.gz
daemon: Add 'built-in-builders' RPC.
* nix/libstore/builtins.cc (builtinBuilderNames): New function. * nix/libstore/builtins.hh (builtinBuilderNames): New declaration. * nix/libstore/worker-protocol.hh (PROTOCOL_VERSION): Bump to 0x160. (WorkerOp)[wopBuiltinBuilders]: New value. * nix/nix-daemon/nix-daemon.cc (performOp): Handle it. * guix/store.scm (operation-id)[built-in-builders]: New value. * guix/store.scm (read-arg): Add 'string-list'. (built-in-builders): New procedure. * tests/derivations.scm ("built-in-builders"): New test.
Diffstat (limited to 'guix/store.scm')
-rw-r--r--guix/store.scm25
1 files changed, 23 insertions, 2 deletions
diff --git a/guix/store.scm b/guix/store.scm
index 43cfda9214..3047dc39b9 100644
--- a/guix/store.scm
+++ b/guix/store.scm
@@ -95,6 +95,7 @@
path-info-registration-time
path-info-nar-size
+ built-in-builders
references
references/substitutes
requisites
@@ -187,7 +188,8 @@
(query-substitutable-paths 32)
(query-valid-derivers 33)
(optimize-store 34)
- (verify-store 35))
+ (verify-store 35)
+ (built-in-builders 80))
(define-enumerate-type hash-algo
;; hash.hh
@@ -283,7 +285,7 @@
(write-string (bytevector->base16-string arg) p))))
(define-syntax read-arg
- (syntax-rules (integer boolean string store-path store-path-list
+ (syntax-rules (integer boolean string store-path store-path-list string-list
substitutable-path-list path-info base16)
((_ integer p)
(read-int p))
@@ -295,6 +297,8 @@
(read-store-path p))
((_ store-path-list p)
(read-store-path-list p))
+ ((_ string-list p)
+ (read-string-list p))
((_ substitutable-path-list p)
(read-substitutable-path-list p))
((_ path-info p)
@@ -914,6 +918,23 @@ that there is no guarantee that the order of the resulting list matches the
order of PATHS."
substitutable-path-list))
+(define built-in-builders
+ (let ((builders (operation (built-in-builders)
+ "Return the built-in builders."
+ string-list)))
+ (lambda (store)
+ "Return the names of the supported built-in derivation builders
+supported by STORE."
+ ;; Check whether STORE's version supports this RPC and built-in
+ ;; derivation builders in general, which appeared in Guix > 0.11.0.
+ ;; Return the empty list if it doesn't. Note that this RPC does not
+ ;; exist in 'nix-daemon'.
+ (if (or (> (nix-server-major-version store) #x100)
+ (and (= (nix-server-major-version store) #x100)
+ (>= (nix-server-minor-version store) #x60)))
+ (builders store)
+ '()))))
+
(define-operation (optimize-store)
"Optimize the store by hard-linking identical files (\"deduplication\".)
Return #t on success."