/usr/share/pyshared/pyNN/neuron/nmodl/ is in python-pynn 0.7.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/pyNN/neuron/nmodl/adexp.mod
/usr/share/pyshared/pyNN/neuron/nmodl/alphaisyn.mod
/usr/share/pyshared/pyNN/neuron/nmodl/alphasyn.mod
/usr/share/pyshared/pyNN/neuron/nmodl/expisyn.mod
/usr/share/pyshared/pyNN/neuron/nmodl/gsfa_grr.mod
/usr/share/pyshared/pyNN/neuron/nmodl/hh_traub.mod
/usr/share/pyshared/pyNN/neuron/nmodl/netstim2.mod
/usr/share/pyshared/pyNN/neuron/nmodl/refrac.mod
/usr/share/pyshared/pyNN/neuron/nmodl/reset.mod
/usr/share/pyshared/pyNN/neuron/nmodl/stdwa_guetig.mod
/usr/share/pyshared/pyNN/neuron/nmodl/stdwa_softlimits.mod
/usr/share/pyshared/pyNN/neuron/nmodl/stdwa_songabbott.mod
/usr/share/pyshared/pyNN/neuron/nmodl/stdwa_symm.mod
/usr/share/pyshared/pyNN/neuron/nmodl/tmgsyn.mod
/usr/share/pyshared/pyNN/neuron/nmodl/tmisyn.mod
/usr/share/pyshared/pyNN/neuron/nmodl/vecstim.mod