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doc: Document the location of the build directory. 

Fixes <http://bugs.gnu.org/19771>.
Reported by Andrei Osipov <andrspv@gmail.com>.

* doc/guix.texi (Invoking guix-daemon): Document the build directory
  location.
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Ludovic Courtès 2015-02-07 18:32:04 +01:00
parent 4320c094f3
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@ -557,6 +557,19 @@ system directories. By default, the latter contains @file{/dev} and
a separate mount name space, its own PID name space, network name space,
etc. This helps achieve reproducible builds (@pxref{Features}).
When the daemon performs a build on behalf of the user, it creates a
build directory under @file{/tmp} or under the directory specified by
its @code{TMPDIR} environment variable; this directory is shared with
the container for the duration of the build. Be aware that using a
directory other than @file{/tmp} can affect build results---for example,
with a longer directory name, a build process that uses Unix-domain
sockets might hit the name length limitation for @code{sun_path}, which
it would otherwise not hit.
The build directory is automatically deleted upon completion, unless the
build failed and the client specified @option{--keep-failed}
(@pxref{Invoking guix build, @option{--keep-failed}}).
The following command-line options are supported:
@table @code