On 1 July 2010 18:02, William Stein <wst...@gmail.com> wrote:

> I vote NO to including patch in sage.
>
> 1. We can accomplish the same thing when creating the spkg.  E.g, the command
>
>   sage -pkg foo-1.2.3
>
> could *automatically* apply patch using each file in
> foo-1.2.3/patches/ and create the corresponding patched files.  To
> *creators* of spkg's this is functionally equivalent to what is
> proposed, and perhaps even better, because use of patch files will be
> carefully organized, instead of being done by adhoc use of the patch
> command in spkg-install.

I was not suggesting it to be used by the creators of packages - they
need a 'diff' command, not a patch command.

> Also, no current spkg-install's have to be
> changed at all.

No, but you know as well as I do, that this is an ongoing process. I
don't know how many files in Sage get patched, but it is a lot of
them.

> By apply patch at runtime, we only assume the user
> has the ability to patch files, and since Mercurial is in Sage this
> adds no dependencies.

In order to have Mercurial you need Python, which is currently patched
multiple times. Python is certainly one of the packages that has a
great many patches. The Python that comes with Solaris is too old to
build Mercurial to to use Mercurial one would need to

> 2. We should never, ever add any new packages to sage without being
> very, very careful first.  Every package added to sage increases later
> porting work, maintenance work, etc. forever.  This is particularly a
> concern to *me*, since some of you come and go, but I'll be dealing
> with sage pretty much forever.
>
>  -- William

I would have expected the maintenance on 'patch' to be very low
indeed. It has no dependencies other than a C compiler and 'make'.
There are no optional things you can enable with options to the
configure script.

Take a look if you want

http://boxen.math.washington.edu/home/kirkby/patches/patch-2.6.1.spkg

I wont create a ticket for it, since you are obviously not keen, but I
thought I'd post a link given I'd made the package anyway.

On my Ultra 27, tt takes a grand total of 3.2 seconds to install it.

real    0m3.191s
user    0m2.698s
sys     0m1.640s
Successfully installed patch-2.6.1

though that increases to 3.6 seconds if I run the self-tests.

24 tests (24 passed, 0 failed)
All tests succeeded!
Now cleaning up tmp files.
rm: Cannot remove any directory in the path of the current working directory
/export/home/drkirkby/sage-4.5.alpha1/spkg/build/patch-2.6.1
Making Sage/Python scripts relocatable...
Making script relocatable
Finished installing patch-2.6.1.spkg

real    0m3.635s
user    0m3.057s
sys     0m2.392s


Dave

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