The Nominal Datatype Package

# Download

Download the Nominal Isabelle snapshot provided below and follow the instructions in INSTALL.
Isabelle Snapshot from 7. January 2008 (includes version 0.14 of the nominal datatype package)
INSTALL
Beginning from version 0.13, the nominal package can be started by using just the command "Isabelle" and enabling the option "HOL-Nominal" in the ProofGeneral menu "Isabelle -> Logics". If you want that HOL-Nominal is your default logic, then you can add

ISABELLE_LOGIC="HOL-Nominal"

to the file $HOME/isabelle/etc/settings.