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02/06: guix build: '--log-file' looks for build logs of equivalent deriv


From: guix-commits
Subject: 02/06: guix build: '--log-file' looks for build logs of equivalent derivations.
Date: Tue, 18 Jun 2019 11:03:54 -0400 (EDT)

civodul pushed a commit to branch master
in repository guix.

commit 9353b199c18caca4a429f20423e1a5e7bc26a8da
Author: Ludovic Court├Ęs <address@hidden>
Date:   Tue Jun 18 09:50:38 2019 +0200

    guix build: '--log-file' looks for build logs of equivalent derivations.
    
    Previously, '--log-file' would look for log files only for the current
    derivation, and thus wouldn't find log files of equivalent derivations
    that produce the same output.
    
    * guix/scripts/build.scm (guix-build) <log-file?>: Replace
    'derivation-file-name' by 'derivation->output-path'.
---
 guix/scripts/build.scm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/guix/scripts/build.scm b/guix/scripts/build.scm
index 8fa700c..61ca4dc 100644
--- a/guix/scripts/build.scm
+++ b/guix/scripts/build.scm
@@ -935,9 +935,12 @@ needed."
                                     #:mode mode))
 
               (cond ((assoc-ref opts 'log-file?)
+                     ;; Pass 'show-build-log' the output file names, not the
+                     ;; derivation file names, because there can be several
+                     ;; derivations leading to the same output.
                      (for-each (cut show-build-log store <> urls)
                                (delete-duplicates
-                                (append (map derivation-file-name drv)
+                                (append (map derivation->output-path drv)
                                         items))))
                     ((assoc-ref opts 'derivations-only?)
                      (format #t "~{~a~%~}" (map derivation-file-name drv))



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