On 06/30/10 09:59 PM, Peter Jeremy wrote:
On 2010-Jun-29 23:18:08 +0100, "Dr. David Kirkby"<[email protected]>
wrote:
I've been chasing my tail much of today, trying to make Singular play ball.
Managed to find out one for for sure. Someone has written a patch to
src/Singular/Makefile.in, then someone else has written one to the same file and
overwrote the first one.
Which is the scenario I mentioned in
http://groups.google.com/group/sage-devel/msg/52203863287d05d8
I do not claim to know the best way to handle the packages.
It does seem the way we do things now with the .spkg format is sub-optimal on a
number of fronts. The facts I can't see changes made by someone else immediately
is not very good. This makes frequent releases almost necessary, but that drives
down quality.
Anyway, that's a can of worms I do not want to open! I think my views on that
are well known.
And, BTW, another way to create a MD5 hash is
openssl md5 FILE...
Yes. The point is whenever people say "md5" on computers, they should realise
there is no single magic command for computing the md5 checksum.
Yet for testing if two files are the same, 'cksum' is fine. 32-bits is enough
unless you are concerned about deliberate deception. The big plus is that POSIX
mandates it must exist, and gives the algorithm that must be used. (Unlike
'sum', which I found to my cost 10-15 years ago, does not give the same result
on different platforms.)
dave
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