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Re: Bug#163666: debian-policy: Unclear result with [arch] and |

I finally found some time to write new proposed wording for the section in
Policy on handling architecture-restricted dependencies.  Could you review
this change and be sure that I'm correctly describing the situation?  I
added a new, fairly complicated example based on one of the ones that
Guillem explained for me.

--- a/policy.sgml
+++ b/policy.sgml
@@ -4188,6 +4188,22 @@ Build-Depends-Indep: texinfo
 Build-Depends: kernel-headers-2.2.10 [!hurd-i386],
   hurd-dev [hurd-i386], gnumach-dev [hurd-i386]
+         requires <tt>kernel-headers-2.2.0</tt> on all architectures
+         other than hurd-i386 and requires <tt>hurd-dev</tt> and
+         <tt>gnumach-dev</tt> only on hurd-i386.
+       </p>
+       <p>
+         If the architecture-restricted dependency is part of a set of
+         alternatives using <tt>|</tt>, that branch of the alternative is
+         ignored completely on architectures that do not match the
+         restriction.  For example:
+         <example compact="compact">
+Build-Depends: foo [!i386] | bar [!amd64]
+         </example>
+         is equivalent to <tt>bar</tt> on the i386 architecture, to
+         <tt>foo</tt> on the amd64 architecture, and to <tt>foo |
+         bar</tt> on all other architectures.

Russ Allbery (rra@debian.org)               <http://www.eyrie.org/~eagle/>

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