Override DEFINEs in setup.cfg in source eggs

Question

The source egg of PySQLite 2.6.0 contains a file setup.cfg that looks like this:

[build_ext]
#define=
#include_dirs=/usr/local/include
#library_dirs=/usr/local/lib
libraries=sqlite3
define=SQLITE_OMIT_LOAD_EXTENSION

I'd like to build the egg with the SQLITE_OMIT_LOAD_EXTENSION define disabled (not set). I could do that by uncommenting that line in setup.cfg, but I'd like to do this in a zc.buildout environment, using zc.recipe.egg, zc.recipe.cmmi, or any other recipe that could help me.

So, is there an easy way to install PySQLite with extensions enabled but without tampering setup.cfg?

Answer 1

Yes, there is:

[buildout]
parts = pysql

[pysql]
recipe = zc.recipe.egg:custom
egg = PySQLite
undef=SQLITE_OMIT_LOAD_EXTENSION