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doc: fix incorrect example

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For whatever reason, nix-build ... --argstr a.b "c" doesn't work. It fails quitely so it's best to use an example here that works.
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Matthew Bauer 2018-11-28 16:00:43 -06:00 committed by GitHub
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doc/cross-compilation.xml
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@ -385,7 +385,7 @@ nix-build <nixpkgs> --arg crossSystem '(import <nixpkgs/lib>).system
Eventually we would like to make these platform examples an unnecessary
convenience so that
<programlisting>
nix-build &lt;nixpkgs&gt; --arg crossSystem.config '&lt;arch&gt;-&lt;os&gt;-&lt;vendor&gt;-&lt;abi&gt;' -A whatever</programlisting>
nix-build &lt;nixpkgs&gt; --arg crossSystem '{ config = "&lt;arch&gt;-&lt;os&gt;-&lt;vendor&gt;-&lt;abi&gt;"; }' -A whatever</programlisting>
works in the vast majority of cases. The problem today is dependencies on
other sorts of configuration which aren't given proper defaults. We rely on
the examples to crudely to set those configuration parameters in some