Re: [Numpy-discussion] include file location and .eggs

[<kon...@la...>]

On Jan 23, 2006, at 18:07, Andrew Straw wrote:

> Let's say you wanted to have Scientific 2.4.2 depend on Numeric 23.5.
> You'd make sure the call to setup() (which is now imported from
> setuptools, not distutils.core) included the following:

...

OK, that looks sophisticated enough to me :-)

Since setuptools keeps track of dependencies, it should be able to =20
provide on demand a list of all include file directories for all =20
packages on which the current build procedure depends, directly or =20
indirectly. To stay within my example, a package that depends on =20
ScientificPython, which in turn depends on Numeric, should be able to =20=

get, with a single call, the include directories for *both* =20
ScientificPython and Numeric.

Assuming such a mechanism exists, and is also implemented in plain =20
distutils (returning just the standard installation paths), then =20
personally I wouldn't care where header files are, because there is a =20=

straightforward way to obtain that information.

However, that is not what is currently being discussed for numpy, =20
unless I missed something. What is being discussed is an arrangement =20
that requires the setup.py of every package to reconstruct the =20
dependency tree and figure out where each package in the dependency =20
tree keeps its header files.


There is something else that I don't understand. If egg installation =20
uses setup from setuptools instead of distutils, it should be trivial =20=

for the setup function from setuptools to implement install_headers =20
in a way that suits its need. So why request that numpy (and other =20
packages) adapt to setuptools, creating compatibility issues with =20
standard distutils, rather than modify setuptools and have it work =20
automatically for all packages?

Konrad.
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Konrad Hinsen
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