  Modern parton distribution function (PDF) determinations either neglect
higher-order corrections in the electroweak (EW) coupling or implement them
approximately for a subset of PDF processes. We present a new tool, PineAPPL,
which supports perturbative correction in arbitrary powers of the EW and strong
coupling constant, and stores theoretical predictions independently of the used
PDFs in so-called interpolation grids. These are the foundation of any PDF
determination, and will allow us to perform a PDF fit taking into account EW
corrections for all processes consistently. Apart from PDF determinations
PineAPPL can also be used in precision phenomenology to study the impact of
different choices of PDF sets, without rerunning the time-consuming
computation. As an application of this tool we show Drell-Yan (DY) lepton-pair
production were larger effects of NLO EW corrections can be seen that will
potentially influence the PDF fit and comment about which observables are
particularly suited and NLO EW PDF fit and which are not.
