hi everyone,
i just did a little spring cleaning, and while i cleaned up my
~/Projects folder - the vast amount of that was virtualenvs with roughly
the same packages installed - each about 500 mb for like 2-5 mb of code
this seems excessively wasteful - my impression is that ~98% of the
files seem to be duplicate.
since the impending eol of python2 and the multi python version
capabilities of python3 compiled code caches, i'd like to create a
proposal for a shared folder structure
$LIB/python/shared-packages/ should be a root folder in which unpacked
wheels would reside
at a initial iteration this solution would suffer from the expanding
python path issue since each package would have a toplevel sys.path entry.
on order to later on speed this up a simple api can be provided that
makes python aware of the metatadata locations and the map
toplevel/namespace names directly to import locations
for example like
shared-packages.pth
import sys;sys.path.insert(0,
"$LIB/python/shared-packages/shared_packages_support-1.0-py3.whl/");
import
shared_packages_support;sys.path.pop(0);shared_packages_support.enable()
shared_packages.json
{
"pytest": "pytest-3.8.8-py2.py3.whl";
}
in the aftermath, when shared packages support and fast import/metadata
for shared packages where implemented, the sizes of most virtualenvs
would shrink significantly
-- Ronny
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