  In this paper we explore the use of results on forward particle production at
the LHC to constrain nuclear Parton Density Functions (nPDFs). The case study
here is based on a possible future measurement of forward photon production
with the Forward Calorimeter that is currently under discussion as an upgrade
of the ALICE experiment. As a starting point, we use the recent nNNPDF 1.0
nuclear PDFs, which have been determined using fixed target neutral-current DIS
data, which constrain the gluon density at x > $10^{-2}$. The Bayesian
reweighting technique is used to include the constraints from the future
measurement.
