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build-system/gnu: Make 'first-subdirectory' deterministic. 

Fixes <https://bugs.gnu.org/35387>.
Reported by Christopher Baines <mail@cbaines.net>.

* guix/build/gnu-build-system.scm (first-subdirectory): Rewrite using
'scandir' so that the result is deterministic.
This commit is contained in:
Ludovic Courtès 2019-06-14 23:02:28 +02:00
parent 92d00ca466
commit cfd4e4d06e
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GPG Key ID: 090B11993D9AEBB5
1 changed files with 9 additions and 13 deletions
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22
guix/build/gnu-build-system.scm
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@ -25,6 +25,7 @@
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:use-module (ice-9 format)
#:use-module (ice-9 ftw)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-19)
#:use-module (srfi srfi-34)
@ -58,19 +59,14 @@ See https://reproducible-builds.org/specs/source-date-epoch/."
(setenv "SOURCE_DATE_EPOCH" "1")
#t)
(define (first-subdirectory dir)
"Return the path of the first sub-directory of DIR."
(file-system-fold (lambda (path stat result)
(string=? path dir))
(lambda (path stat result) result) ; leaf
(lambda (path stat result) result) ; down
(lambda (path stat result) result) ; up
(lambda (path stat result) ; skip
(or result path))
(lambda (path stat errno result) ; error
(error "first-subdirectory" (strerror errno)))
#f
dir))
(define (first-subdirectory directory)
"Return the file name of the first sub-directory of DIRECTORY."
(match (scandir directory
(lambda (file)
(and (not (member file '("." "..")))
(file-is-directory? (string-append directory "/"
file)))))
((first . _) first)))
(define* (set-paths #:key target inputs native-inputs
(search-paths '()) (native-search-paths '())