Something appears to have blown up in configuring hat on my box...
tatd2@jet ~/HatDeltaExample $ hat-observe
/usr/local/bin/hat-observe: line 4: /usr/local/bin/harch: No such
file or directory
'harch' is no longer installed by hat - it now requires a prior
installation of 'hmake'. But perhaps your hmake is not located
in /usr/local/bin. I suppose the hat tools should not make any
assumption about where 'harch' is located. E.g. the line
MACHINE=${MACHINE-"`/usr/local/bin/harch`"}
should really be
MACHINE=${MACHINE-"`harch`"}
in the scripts for hat-observe, hat-trail, etc.