On Sun, Feb 10, 2002 at 02:08:56PM +1100, Donovan Baarda wrote:
On Sat, Feb 09, 2002 at 07:41:31PM +, Julian Gilbey wrote:
I have a suggestion, which may already have been thought of.
Need: a python-module (pure Python) providing package should provide
byte-compiled versions for all installed python versions (as long as
there are no version dependency issues)
Actually, it is slightly more complex than this. For starters, forgetting
that not all python modules are compatible with all versions of python,
there is a second need;
Not a problem.
Need-2: installing a new version of Python should byte-compile all
pre-installed Python modules for the newly installed Python version.
That's the whole cleverness of the emacsen solution -- see below.
This makes it a bit tricky because it's hard to know where the compile all
for all scripts should go; in the versioned Python packages, in the
Python default wrapper, or in the modules themselves. The moment you think
it's obvious, you dig deeper and find it introduces some dependancy nastys.
Quite -- but it's really good that the emacsen team have already
solved this problem, so the python team doesn't have to reinvent the
wheel.
I'm not 100% sure of the details of the emacsen approach, but doesn't it use
some sort of module-registration database? I can't help but think that it's
a bit sad that you need to introduce _another_ database of installed stuff
when you already have the dpkg database. However, perhaps that's the only
way to get a truely perfect solution.
Yes, emacsen-common reads a database of install/remove command files.
See the /usr/lib/emacsen-common directory. It allows the packages to
be a little bit clever for a relatively small maintainer cost, as the
extra files are mostly boilerplate.
This allows installing/removing emacs packages to be performed
orthogonally to installing/removing different versions of emacs, and
means that any version-independent emacs packages can work with all
installed emacsen without having to be aware of which particular ones
are installed, and without having to have a separate version for each
emacs package.
Julian
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Julian Gilbey, Dept of Maths, Debian GNU/Linux Developer
Queen Mary, Univ. of London see http://people.debian.org/~jdg/
http://www.maths.qmul.ac.uk/~jdg/ or http://www.debian.org/
Visit http://www.thehungersite.com/ to help feed the hungry
