Expose fastNLO converter to Python/Rust/...

NNPDF / pineappl

PineAPPL is not an extension of APPLgrid

https://nnpdf.github.io/pineappl/

GNU General Public License v3.0

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Expose fastNLO converter to Python/Rust/... #128

Open alecandido opened 2 years ago

alecandido commented 2 years ago

[ ] move the current fastnlo module from the CLI to the main crate
[ ] bind in the Python interface

cschwan commented 2 years ago

I'll take care of the first part, and you can write bindings afterwards!

cschwan commented 2 years ago

I tried doing this and unfortunately didn't succeed, probably due to a linking-order problem with LHAPDF: it seems to matter whether I link LHAPDF first and fastNLO second, because the latter depends on the former and the CLI depends on both. I think that this problem can't be solved with cargo, so this Issue probably has to be postponed for a while.

alecandido commented 2 years ago

Sad, but fine.

In any case, it is not a major issue at the moment: it was mainly needed to start writing "pinecards" for conversion, in order to have consistent metadata, include versions and so on. But pinecards (I'd really like to call them seeds :D) are going to be reworked anyhow (at least a bit), after the new commondata will be available.

In the meantime, if we'll generate our own grids, we might stop doing systematic conversion. Let's worry afterwards.

felixhekhorn commented 2 years ago

For writing the APPL conversion pinecards we need to run the "CLI" (meaning the appl2pine command) in any case (for the moment) so we can even call the PineAPPL CLI there ...

In any case https://github.com/NNPDF/pinefarm/issues/3 is not liked to CommonData ...

alecandido commented 2 years ago

I'd still assign low priority to this task: we already converted all the grids we needed, it's non-blocking for anything. It's a refinement we want, but still a refinement.