[MacPorts] #68911: py37-plumbum @1.6.9: Error: Unknown switch --no-isolation

[MacPorts]

#68911: py37-plumbum @1.6.9: Error: Unknown switch --no-isolation
------------------------+--------------------------
 Reporter:  ryandesign  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.8.1
 Keywords:              |       Port:  py37-plumbum
------------------------+--------------------------
 https://build.macports.org/builders/ports-
 13_arm64-builder/builds/44726/steps/install-port/logs/stdio
 {{{
 Error: Unknown switch --no-isolation
 ------
 Build and optionally upload. For help, see
 https://packaging.python.org/en/latest/distributing/#uploading-your-
 project-to-pypi

 Usage:
     build.py [SWITCHES]

 Meta-switches:
     -h, --help         Prints this help message and quits
     --help-all         Prints help messages of all sub-commands and quits
     -v, --version      Prints the program's version and quits

 Switches:
     --upload           If given, the artifacts will be uploaded to PyPI
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/68911>
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