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authorLudovic Courtès <ludo@gnu.org>2015-12-09 11:04:57 +0100
committerLudovic Courtès <ludo@gnu.org>2015-12-09 14:29:41 +0100
commita8d65643fb21fdf6c46b3d248bda411d970e53ab (patch)
tree70509da63d318020aa2990720c58496e2515e839 /doc
parent58c08df0544bc39b3b5a8f6638f776159b6b8d8e (diff)
downloadguix-a8d65643fb21fdf6c46b3d248bda411d970e53ab.tar
guix-a8d65643fb21fdf6c46b3d248bda411d970e53ab.tar.gz
guix build: Add '--check'.
* guix/derivations.scm (build-derivations): Add optional 'mode' parameter. * guix/scripts/build.scm (%default-options): Add 'build-mode'. (show-help, %options): Add '--check'. (guix-build): Honor 'build-mode' key of OPTS. Pass it to 'show-what-to-build' and 'build-derivations'. * doc/guix.texi (Invoking guix build): Document it. (Substitutes): Mention it.
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi18
1 files changed, 17 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 390e7949c0..97fddd025e 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -1638,7 +1638,10 @@ a diverse set of independent package builds, we can strengthen the
integrity of our systems. The @command{guix challenge} command aims to
help users assess substitute servers, and to assist developers in
finding out about non-deterministic package builds (@pxref{Invoking guix
-challenge}).
+challenge}). Similarly, the @option{--check} option of @command{guix
+build} allows users to check whether previously-installed substitutes
+are genuine by rebuilding them locally (@pxref{build-check,
+@command{guix build --check}}).
In the future, we want Guix to have support to publish and retrieve
binaries to/from other users, in a peer-to-peer fashion. If you would
@@ -3786,6 +3789,19 @@ $ git clone git://git.sv.gnu.org/guix.git
$ guix build guix --with-source=./guix
@end example
+@anchor{build-check}
+@item --check
+@cindex determinism, checking
+@cindex reproducibility, checking
+Rebuild @var{package-or-derivation}, which are already available in the
+store, and raise an error if the build results are not bit-for-bit
+identical.
+
+This mechanism allows you to check whether previously-installed
+substitutes are genuine (@pxref{Substitutes}), or whether a package's
+build result is deterministic. @xref{Invoking guix challenge}, for more
+background information and tools.
+
@item --no-grafts
Do not ``graft'' packages. In practice, this means that package updates
available as grafts are not applied. @xref{Security Updates}, for more