On Sun, Jun 23, 2013 at 1:52 PM, Vinay Sajip <vinay_sa...@yahoo.co.uk> wrote:
> Nick Coghlan <ncoghlan <at> gmail.com> writes:
>
>> * References wheel and warehouse from legacy metadata appendix
>
> It may also be worth mentioning that:
>
> * distlib supports converting legacy metadata to the new format; it's as
> simple as:
>
> from distlib.metadata import Metadata
> metadata = Metadata(path='PKG-INFO')
> metadata.write(path='pymeta.json')
>
> * Metadata extracted from setup.py, which includes full dependency
> information, is available through distlib's locate function. This
> includes setuptools' newest format for extras, which has support for
> for environment markers. For example:
>
> from distlib.locators import locate
> dist = locate('setuptools')
> dist.metadata.write('pymeta.json')
>
> Then pymeta.json contains (some fields omitted for brevity, but the
> dependency stuff is there):
>
> {
> "version": "0.7.4",
> "name": "setuptools",
> "metadata_version": "2.0",
> "run_may_require": [
> {
> "environment": "sys_platform=='win32'",
> "dependencies": [
> "wincertstore (== 0.1)"
> ],
> "extra": "ssl"
> },
> {
> "environment": "sys_platform=='win32' and python_version=='2.4'",
> "dependencies": [
> "ctypes (== 1.0.2)"
> ],
> "extra": "ssl"
> },
> {
> "dependencies": [
> "certifi (== 0.0.8)"
> ],
> "extra": "certs"
> },
> {
> "environment": "python_version in '2.4, 2.5'",
> "dependencies": [
> "ssl (== 1.16)"
> ],
> "extra": "ssl"
> }
> ],
> "extras": [
> "certs",
> "ssl"
> ],
> }
>
> I would welcome feedback from anyone who cares to clone/sync the distlib
> repository. A release of distlib with this functionality will occur once
> incorporation of the latest spec changes occurs, and I'm comfortable that
> distlib is reasonably stable following these changes. Additional testing by
> others can speed up getting to that point :-)
>
> Regards,
>
> Vinay Sajip
Here is the setuptools extras+conditionals format. It just separates
them with a colon:
extras_require = {
"ssl:sys_platform=='win32'": "wincertstore==0.1",
"ssl:sys_platform=='win32' and python_version=='2.4'": "ctypes==1.0.2",
"ssl:python_version in '2.4, 2.5'":"ssl==1.16",
"certs": "certifi==0.0.8",
},
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