Hi folks,

David Kirkby has suspected that ticket #6583 would break the build of
Sage on t2.math. I think I can now demonstrate that this is indeed the
case. Starting with Sage 4.3, at David's suggestion I created Sage
4.3.0.1 [1] with only #6595 applied. I then created six alpha releases
named Sage 4.3.0.2.alphaX [2] based on Sage 4.3.0.1. These are as
follows, with the order in which tickets were merged:

* sage-4.3.0.2.alpha0: #6425, #6772, #7799, #7775, #7772

* sage-4.3.0.2.alpha1: #7770, #7692, #7749, #7768, #7728

* sage-4.3.0.2.alpha2: #7704, #7548, #7616, #7754, #7620

* sage-4.3.0.2.alpha3: #5174, #1321, #6820, #6965

* sage-4.3.0.2.alpha4: #7482, #7724, #7678, #7388, #7483

* sage-4.3.0.2.alpha5: #7514, #7097, #7279, #7834

As you can see, sage-4.3.0.2.alpha0 is based on sage-4.3.0.1, while
sage-4.3.0.2.alpha1 is based on sage-4.3.0.2.alpha0. And so on. Each
of the above six alpha releases successfully builds on t2.math. Next,
I created sage-4.3.0.2.alpha5-6583.tar [3], which is based on Sage
4.3.0.2.alpha5 and only merged ticket #6583. This alpha release failed
to build.


[1] http://sage.math.washington.edu/home/mvngu/sage-src/sage-4.3.0.1.tar

[2] http://sage.math.washington.edu/home/mvngu/sage-src/sage-4.3.0.2/

[3] 
http://sage.math.washington.edu/home/mvngu/sage-src/sage-4.3.0.2/sage-4.3.0.2.alpha5-6583.tar

-- 
Regards
Minh Van Nguyen

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