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* Document --cores in the manual.

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Eelco Dolstra 2010-08-17 07:22:05 +00:00
parent b75e1043a3
commit 86f65edf4e
5 changed files with 46 additions and 5 deletions
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19
doc/manual/conf-file.xml
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@ -97,6 +97,25 @@ env-keep-derivations = false
</varlistentry>
<varlistentry xml:id="conf-build-cores"><term><literal>build-cores</literal></term>
<listitem><para>Sets the value of the
<envar>NIX_BUILD_CORES</envar> environment variable in the
invocation of builders. Builders can use this variable at their
discretion to control the maximum amount of parallelism. For
instance, in Nixpkgs, if the derivation attribute
<varname>enableParallelBuilding</varname> is set to
<literal>true</literal>, the builder passes the
<option>-j<replaceable>N</replaceable></option> flag to GNU Make.
It can be overriden using the <option
linkend='opt-cores'>--cores</option> command line switch and
defaults to <literal>1</literal>. The value <literal>0</literal>
means that the builder should use all available CPU cores in the
system.</para></listitem>
</varlistentry>
<varlistentry xml:id="conf-build-max-silent-time"><term><literal>build-max-silent-time</literal></term>
<listitem>