diff options
| -rw-r--r-- | guix/build/union.scm | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/guix/build/union.scm b/guix/build/union.scm index 077b7fe530..0f8c87e171 100644 --- a/guix/build/union.scm +++ b/guix/build/union.scm @@ -100,7 +100,8 @@ single leaf." ,@(map loop dirs)))) (leaf leaf)))) -(define* (union-build output directories) +(define* (union-build output directories + #:key (log-port (current-error-port))) "Build in the OUTPUT directory a symlink tree that is the union of all the DIRECTORIES." (define (file-tree dir) @@ -174,6 +175,8 @@ the DIRECTORIES." (setvbuf (current-output-port) _IOLBF) (setvbuf (current-error-port) _IOLBF) + (when (file-port? log-port) + (setvbuf log-port _IOLBF)) (mkdir output) (let loop ((tree (delete-duplicate-leaves @@ -189,8 +192,7 @@ the DIRECTORIES." ;; A leaf: create a symlink. (let* ((dir (string-join dir "/")) (target (string-append output "/" dir "/" (basename tree)))) - (format (current-error-port) "`~a' ~~> `~a'~%" - tree target) + (format log-port "`~a' ~~> `~a'~%" tree target) (symlink tree target))) (((? string? subdir) leaves ...) ;; A sub-directory: create it in OUTPUT, and iterate over LEAVES. |