Undocument NIX_OTHER_STORES
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@ -283,28 +283,6 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
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</varlistentry>
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<varlistentry xml:id="envar-other-stores"><term><envar>NIX_OTHER_STORES</envar></term>
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<listitem><para>This variable contains the paths of remote Nix
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installations from which packages can be copied, separated by colons.
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<phrase condition="manual">See <xref linkend="sec-sharing-packages"
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/> for details.</phrase> Each path should be the
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<filename>/nix</filename> directory of a remote Nix installation
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(i.e., not the <filename>/nix/store</filename> directory). The
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paths are subject to globbing, so you can set it so something like
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<literal>/var/run/nix/remote-stores/*/nix</literal> and mount
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multiple remote filesystems in
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<literal>/var/run/nix/remote-stores</literal>.</para>
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<para>Note that if you’re building through the <link
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linkend="sec-nix-daemon">Nix daemon</link>, the only setting for
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this variable that matters is the one that the
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<command>nix-daemon</command> process uses. So if you want to
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change it, you have to restart the daemon.</para></listitem>
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</varlistentry>
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<varlistentry><term><envar>NIX_SHOW_STATS</envar></term>
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<varlistentry><term><envar>NIX_SHOW_STATS</envar></term>
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<listitem><para>If set to <literal>1</literal>, Nix will print some
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<listitem><para>If set to <literal>1</literal>, Nix will print some
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@ -25,7 +25,7 @@
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<holder>Eelco Dolstra</holder>
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<holder>Eelco Dolstra</holder>
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</copyright>
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</copyright>
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<date>April 2014</date>
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<date>September 2014</date>
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</info>
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</info>
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@ -53,30 +53,5 @@ But note that <command>nix-copy-closure</command> is generally more
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efficient in this example because it only copies paths that are not
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efficient in this example because it only copies paths that are not
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already present in the target Nix store.</para>
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already present in the target Nix store.</para>
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<para>Finally, if you can mount the Nix store of a remote machine in
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your local filesystem, Nix can copy paths from the remote Nix store to
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the local Nix store <emphasis>on demand</emphasis>. For instance,
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suppose that you mount a remote machine containing a Nix store via
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<command
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xlink:href="http://fuse.sourceforge.net/sshfs.html">sshfs</command>:
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<screen>
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$ sshfs alice@itchy.example.org:/ /mnt</screen>
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You should then set the <envar>NIX_OTHER_STORES</envar> environment
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variable to tell Nix about this remote Nix store:
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<screen>
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$ export NIX_OTHER_STORES=/mnt/nix</screen>
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Then if you do any Nix operation, e.g.
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<screen>
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$ nix-env -i firefox</screen>
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and Nix has to build a path that it sees is already present in
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<filename>/mnt/nix</filename>, then it will just copy from there
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instead of building it from source.</para>
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</chapter>
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</chapter>
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