From 7f3b2510d6b050b8fb0974fa0cd7a164ac51f6d1 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Tue, 12 Jan 2016 16:44:26 +0100 Subject: daemon: check: Keep the differing output if -K is given. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This makes it easier to investigate the non-determinism, e.g. $ nix-build pkgs/stdenv/linux -A stage1.pkgs.zlib --check -K error: derivation ‘/nix/store/l54i8wlw22656i4pk05c52ngv9rpl39q-zlib-1.2.8.drv’ may not be deterministic: output ‘/nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8’ differs from ‘/nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8-check’ $ diffoscope /nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8 /nix/store/11a27shh6n2ivi4a7s964i65ql80cf27-zlib-1.2.8-check ... ├── lib/libz.a │ ├── metadata │ │ @@ -1,15 +1,15 @@ │ │ -rw-r--r-- 30001/30000 3096 Jan 12 15:20 2016 adler32.o ... │ │ +rw-r--r-- 30001/30000 3096 Jan 12 15:28 2016 adler32.o ... Co-authored-by: Ludovic Courtès --- doc/guix.texi | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'doc/guix.texi') diff --git a/doc/guix.texi b/doc/guix.texi index 01363c1d13..cd4e550ef3 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -4332,6 +4332,10 @@ substitutes are genuine (@pxref{Substitutes}), or whether the build result of a package is deterministic. @xref{Invoking guix challenge}, for more background information and tools. +When used in conjunction with @option{--keep-failed}, the differing +output is kept in the store, under @file{/gnu/store/@dots{}-check}. +This makes it easy to look for differences between the two results. + @item --derivations @itemx -d Return the derivation paths, not the output paths, of the given -- cgit v1.2.3