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-rw-r--r--doc/guix.texi7
-rw-r--r--guix/derivations.scm28
-rw-r--r--tests/derivations.scm68
3 files changed, 91 insertions, 12 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index c82d5f7480..86912ecabf 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -1113,13 +1113,18 @@ derivations as Scheme objects, along with procedures to create and
otherwise manipulate derivations. The lowest-level primitive to create
a derivation is the @code{derivation} procedure:
-@deffn {Scheme Procedure} derivation @var{store} @var{name} @var{builder} @var{args} [#:outputs '("out")] [#:hash #f] [#:hash-algo #f] [#:hash-mode #f] [#:inputs '()] [#:env-vars '()] [#:system (%current-system)]
+@deffn {Scheme Procedure} derivation @var{store} @var{name} @var{builder} @var{args} [#:outputs '("out")] [#:hash #f] [#:hash-algo #f] [#:hash-mode #f] [#:inputs '()] [#:env-vars '()] [#:system (%current-system)] [#:dependency-graphs #f]
Build a derivation with the given arguments. Return the resulting store
path and @code{<derivation>} object.
When @var{hash}, @var{hash-algo}, and @var{hash-mode} are given, a
@dfn{fixed-output derivation} is created---i.e., one whose result is
known in advance, such as a file download.
+
+When @var{dependency-graphs} is true, it must be a list of file
+name/store path pairs. In that case, the reference graph of each store
+path is exported in the build environment in the corresponding file, in
+a simple text format.
@end deffn
@noindent
diff --git a/guix/derivations.scm b/guix/derivations.scm
index 3d7a30aaa8..fea9984370 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -501,11 +501,16 @@ the derivation called NAME with hash HASH."
#:key
(system (%current-system)) (env-vars '())
(inputs '()) (outputs '("out"))
- hash hash-algo hash-mode)
+ hash hash-algo hash-mode
+ dependency-graphs)
"Build a derivation with the given arguments. Return the resulting
store path and <derivation> object. When HASH, HASH-ALGO, and HASH-MODE
are given, a fixed-output derivation is created---i.e., one whose result is
-known in advance, such as a file download."
+known in advance, such as a file download.
+
+When DEPENDENCY-GRAPHS is true, it must be a list of file name/store path
+pairs. In that case, the reference graph of each store path is exported in
+the build environment in the corresponding file, in a simple text format."
(define direct-store-path?
(let ((len (+ 1 (string-length (%store-prefix)))))
(lambda (p)
@@ -540,7 +545,22 @@ known in advance, such as a file download."
value))))
env-vars))))))
- (define (env-vars-with-empty-outputs)
+ (define (user+system-env-vars)
+ ;; Some options are passed to the build daemon via the env. vars of
+ ;; derivations (urgh!). We hide that from our API, but here is the place
+ ;; where we kludgify those options.
+ (match dependency-graphs
+ (((file . path) ...)
+ (let ((value (map (cut string-append <> " " <>)
+ file path)))
+ ;; XXX: This all breaks down if an element of FILE or PATH contains
+ ;; white space.
+ `(("exportReferencesGraph" . ,(string-join value " "))
+ ,@env-vars)))
+ (#f
+ env-vars)))
+
+ (define (env-vars-with-empty-outputs env-vars)
;; Return a variant of ENV-VARS where each OUTPUTS is associated with an
;; empty string, even outputs that do not appear in ENV-VARS.
(let ((e (map (match-lambda
@@ -572,7 +592,7 @@ known in advance, such as a file download."
#t "sha256" input)))
(make-derivation-input path '()))))
(delete-duplicates inputs)))
- (env-vars (env-vars-with-empty-outputs))
+ (env-vars (env-vars-with-empty-outputs (user+system-env-vars)))
(drv-masked (make-derivation outputs
(filter (compose derivation-path?
derivation-input-path)
diff --git a/tests/derivations.scm b/tests/derivations.scm
index 9833e15112..9b3d92a7bf 100644
--- a/tests/derivations.scm
+++ b/tests/derivations.scm
@@ -50,19 +50,23 @@
(let ((drv (package-derivation %store %bootstrap-guile)))
(%guile-for-build drv)))
-(define %bash
- (let ((bash (search-bootstrap-binary "bash" (%current-system))))
+(define (bootstrap-binary name)
+ (let ((bin (search-bootstrap-binary name (%current-system))))
(and %store
- (add-to-store %store "bash" #t "sha256" bash))))
+ (add-to-store %store name #t "sha256" bin))))
+
+(define %bash
+ (bootstrap-binary "bash"))
+(define %mkdir
+ (bootstrap-binary "mkdir"))
-(define (directory-contents dir)
+(define* (directory-contents dir #:optional (slurp get-bytevector-all))
"Return an alist representing the contents of DIR."
(define prefix-len (string-length dir))
(sort (file-system-fold (const #t) ; enter?
(lambda (path stat result) ; leaf
(alist-cons (string-drop path prefix-len)
- (call-with-input-file path
- get-bytevector-all)
+ (call-with-input-file path slurp)
result))
(lambda (path stat result) result) ; down
(lambda (path stat result) result) ; up
@@ -84,7 +88,7 @@
(and (equal? b1 b2)
(equal? d1 d2))))
-(test-skip (if %store 0 11))
+(test-skip (if %store 0 12))
(test-assert "add-to-store, flat"
(let* ((file (search-path %load-path "language/tree-il/spec.scm"))
@@ -292,6 +296,56 @@
(and (valid-path? %store p)
(equal? '(one two) (call-with-input-file p read)))))))
+(test-assert "derivation with #:dependency-graphs"
+ (let* ((input1 (add-text-to-store %store "foo" "hello"
+ (list %bash)))
+ (input2 (add-text-to-store %store "bar"
+ (number->string (random 7777))
+ (list input1)))
+ (builder (add-text-to-store %store "build-graph"
+ (format #f "
+~a $out
+ (while read l ; do echo $l ; done) < bash > $out/bash
+ (while read l ; do echo $l ; done) < input1 > $out/input1
+ (while read l ; do echo $l ; done) < input2 > $out/input2"
+ %mkdir)
+ (list %mkdir)))
+ (drv (derivation %store "closure-graphs"
+ %bash `(,builder)
+ #:dependency-graphs
+ `(("bash" . ,%bash)
+ ("input1" . ,input1)
+ ("input2" . ,input2))
+ #:inputs `((,%bash) (,builder))))
+ (out (derivation-path->output-path drv)))
+ (define (deps path . deps)
+ (let ((count (length deps)))
+ (string-append path "\n\n" (number->string count) "\n"
+ (string-join (sort deps string<?) "\n")
+ (if (zero? count) "" "\n"))))
+
+ (and (build-derivations %store (list drv))
+ (equal? (directory-contents out get-string-all)
+ `(("/bash" . ,(string-append %bash "\n\n0\n"))
+ ("/input1" . ,(if (string>? input1 %bash)
+ (string-append (deps %bash)
+ (deps input1 %bash))
+ (string-append (deps input1 %bash)
+ (deps %bash))))
+ ("/input2" . ,(string-concatenate
+ (map cdr
+ (sort
+ (map (lambda (p d)
+ (cons p (apply deps p d)))
+ (list %bash input1 input2)
+ (list '() (list %bash) (list input1)))
+ (lambda (x y)
+ (match x
+ ((p1 . _)
+ (match y
+ ((p2 . _)
+ (string<? p1 p2)))))))))))))))
+
(define %coreutils
(false-if-exception