diff options
Diffstat (limited to 'guix')
| -rw-r--r-- | guix/build/gnu-build-system.scm | 6 | ||||
| -rw-r--r-- | guix/build/utils.scm | 18 |
2 files changed, 18 insertions, 6 deletions
diff --git a/guix/build/gnu-build-system.scm b/guix/build/gnu-build-system.scm index da6b31c326..8636931ed9 100644 --- a/guix/build/gnu-build-system.scm +++ b/guix/build/gnu-build-system.scm @@ -97,7 +97,11 @@ working directory." (begin (mkdir "source") (chdir "source") - (copy-recursively source ".") + + ;; Preserve timestamps (set to the Epoch) on the copied tree so that + ;; things work deterministically. + (copy-recursively source "." + #:keep-mtime? #t) #t) (and (zero? (system* "tar" "xvf" source)) (chdir (first-subdirectory "."))))) diff --git a/guix/build/utils.scm b/guix/build/utils.scm index 40af785b88..9779278167 100644 --- a/guix/build/utils.scm +++ b/guix/build/utils.scm @@ -134,9 +134,12 @@ return values of applying PROC to the port." (define* (copy-recursively source destination #:key (log (current-output-port)) - (follow-symlinks? #f)) + (follow-symlinks? #f) + keep-mtime?) "Copy SOURCE directory to DESTINATION. Follow symlinks if FOLLOW-SYMLINKS? -is true; otherwise, just preserve them. Write verbose output to the LOG port." +is true; otherwise, just preserve them. When KEEP-MTIME? is true, keep the +modification time of the files in SOURCE on those of DESTINATION. Write +verbose output to the LOG port." (define strip-source (let ((len (string-length source))) (lambda (file) @@ -152,10 +155,15 @@ is true; otherwise, just preserve them. Write verbose output to the LOG port." (let ((target (readlink file))) (symlink target dest))) (else - (copy-file file dest))))) + (copy-file file dest) + (when keep-mtime? + (set-file-time dest stat)))))) (lambda (dir stat result) ; down - (mkdir-p (string-append destination - (strip-source dir)))) + (let ((target (string-append destination + (strip-source dir)))) + (mkdir-p target) + (when keep-mtime? + (set-file-time target stat)))) (lambda (dir stat result) ; up result) (const #t) ; skip |