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Add `imported-files'.

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* guix/derivations.scm (imported-files): New procedure.
  (build-expression->derivation): Correctly handle inputs that are
  sources and not derivation paths.

* tests/derivations.scm ("imported-files"): New test.
This commit is contained in:
Ludovic Courtès 2012-06-11 23:12:55 +02:00
parent 0e383c76ce
commit 99634e3ff4
2 changed files with 70 additions and 4 deletions
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52
guix/derivations.scm
View file

@ -52,7 +52,8 @@ (define-module (guix derivations)
derivation
%guile-for-build
build-expression->derivation))
build-expression->derivation
imported-files))
;;;
;;; Nix derivations, as implemented in Nix's `derivations.cc'.
@ -372,6 +373,51 @@ (define %guile-for-build
;; when using `build-expression->derivation'.
(make-parameter (false-if-exception (nixpkgs-derivation "guile"))))
(define* (imported-files store files
#:key (name "file-import") (system (%current-system)))
"Return a derivation that imports FILES into STORE. FILES must be a list
of (FINAL-PATH . FILE-NAME) pairs; each FILE-NAME is read from the file
system, imported, and appears under FINAL-PATH in the resulting store path."
(define (parent-dirs file-name)
;; Return the list of parent dirs of FILE-NAME, in the order in which an
;; `mkdir -p' implementation would make them.
(let ((not-slash (char-set-complement (char-set #\/))))
(reverse
(fold (lambda (dir result)
(match result
(()
(list dir))
((prev _ ...)
(cons (string-append prev "/" dir)
result))))
'()
(remove (cut string=? <> ".")
(string-tokenize (dirname file-name) not-slash))))))
(let* ((files (map (match-lambda
((final-path . file-name)
(cons final-path
(add-to-store store (basename final-path) #t #f
"sha256" file-name))))
files))
(builder
`(begin
(mkdir %output) (chdir %output)
,@(append-map (match-lambda
((final-path . store-path)
(append (match (parent-dirs final-path)
(() '())
((head ... tail)
(append (map (lambda (d)
`(false-if-exception
(mkdir ,d)))
head)
`((mkdir ,tail)))))
`((symlink ,store-path ,final-path)))))
files))))
(build-expression->derivation store name (%current-system)
builder files)))
(define* (build-expression->derivation store name system exp inputs
#:key (outputs '("out"))
hash hash-algo)
@ -395,7 +441,9 @@ (define %build-inputs
',(map (match-lambda
((name . drv)
(cons name
(derivation-path->output-path drv))))
(if (derivation-path? drv)
(derivation-path->output-path drv)
drv))))
inputs))) )
(builder (add-text-to-store store
(string-append name "-guile-builder")

22
tests/derivations.scm
View file

@ -24,11 +24,13 @@ (define-module (test-derivations)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-64)
#:use-module (rnrs io ports)
#:use-module (rnrs bytevectors)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 ftw))
#:use-module (ice-9 ftw)
#:use-module (ice-9 match))
(define %store
(false-if-exception (open-connection)))
@ -156,7 +158,7 @@ (define %coreutils
(let ((p (derivation-path->output-path drv-path)))
(file-exists? (string-append p "/good"))))))
(test-skip (if (%guile-for-build) 0 2))
(test-skip (if (%guile-for-build) 0 4))
(test-assert "build-expression->derivation without inputs"
(let* ((builder '(begin
@ -208,6 +210,22 @@ (define %coreutils
(let ((p (derivation-path->output-path drv-path)))
(string-contains (call-with-input-file p read-line) "GNU")))))
(test-assert "imported-files"
(let* ((files `(("x" . ,(search-path %load-path "ice-9/q.scm"))
("a/b/c" . ,(search-path %load-path
"guix/derivations.scm"))
("p/q" . ,(search-path %load-path "guix.scm"))))
(drv-path (imported-files %store files)))
(and (build-derivations %store (list drv-path))
(let ((dir (derivation-path->output-path drv-path)))
(every (match-lambda
((path . source)
(equal? (call-with-input-file (string-append dir "/" path)
get-bytevector-all)
(call-with-input-file source
get-bytevector-all))))
files)))))
(test-skip (if (false-if-exception (getaddrinfo "ftp.gnu.org" "http"))
0
1))