[MacPorts] #56980: py-notebook @5.6.0: missing prometheus_client dependency

[MacPorts]

#56980: py-notebook @5.6.0: missing prometheus_client dependency
----------------------+-------------------------
 Reporter:  dmarteau  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.5.3
 Keywords:            |       Port:  py-notebook
----------------------+-------------------------
 After updating to py36-notebook @5.6.0, running `jupyter notebook` fail
 with the error:

 {{{
 pkg_resources.DistributionNotFound: The 'prometheus_client' distribution
 was not found and is required by notebook
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/56980>
MacPorts <https://www.macports.org/>
Ports system for macOS