On Thu, 2016-02-25 at 05:42 -0500, Honza Šilhan wrote: > > From: "Josh Boyer" <jwboyer@xxxxxxxxxxxxxxxxx> > > Could you please elaborate (perhaps in a separate thread) the full > > desire and requirements behind rewriting DNF into C? The first > > link > > in your email says the initiative is started, but it doesn't really > > explain why aside from the libhif step. > > Having DNF in C is desire of many users. If you could notice the > thread > from Courtney Pacheco, she did investigation [1] to minimize the > Fedora > image (which is bigger than in other distros). The DNF will probably > be > taken out of that image. Mostly because of the Python requirement. It appears the requirement is not so much "rewrite DNF in C" as "rewrite DNF in a language that can be compiled to efficient machine code, which doesn't require a large runtime support library, and which can interoperate with C". I think I'm only semi-serious here [1], but have you considered Rust? [1] e.g. it's not yet in Fedora. > By dropping Python requirement, it could speed up the the process > start-up > (no need to load Python libs then). That is also the reason why PK > does not > call DNF Python API from C and rather have a special library in C > instead. > > > I can think of many reasons for doing this, but it would probably > > be > > better coming from the development team doing the work. It would > > also > > be nice if you could explain how the recently proposed and accepted > > system-python Change plays into this long term. I believe DNF was > > one > > of the targeted "system tools" that would use it, so if that isn't > > really going to be the case it would be good to know. > > Gradually DNF is moving more code into C but still a lot of code is > in > Python and plugins are written in Python too. Having rewritten DNF > into > C would take a few years while maintaining the UX compatibility and > still support Python API for plugins. > > The main message was to inform the consumers of hawkey to prepare > their > apps for the libhif change. > > > Honza > > [1] https://gist.github.com/iamcourtney/b8709ed897b7ecc9ac0f -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx http://lists.fedoraproject.org/admin/lists/devel@xxxxxxxxxxxxxxxxxxxxxxx
