Log (undef, "collate");
my ($child_out, $child_in);
- my $pid = open2($child_out, $child_in, 'python', '-c', q{
+ # This depends on the python-arvados-python-client package, which needs to be installed
+ # on the machine running crunch-dispatch (typically, the API server).
+ my $pid = open2($child_out, $child_in, '/usr/share/python2.7/dist/python-arvados-python-client/bin/python', '-c', q{
import arvados
import sys
print (arvados.api("v1").collections().