Lando rebuild, python 2.7 grammar.txt issue - drupal 9, php 8.1

Start by reproducing lando rebuild with the Drupal 9 and PHP 8.1 setup, then trace the reported stack through lib/shell.js, lib/bootstrap.js, and plugins/lando-core/tasks/restart.js. Determine why Python 2.7 generates Grammar.txt during the rebuild and verify that the rebuild completes without the reported error.

Error: 2022-10-31 14:04:23,257 root INFO Generating grammar tables from /usr/lib/python2.7/lib2to3/Grammar.txt

at /snapshot/cli/lib/shell.js
From previous event:
at Shell.sh (/snapshot/cli/lib/shell.js)
at Object.dc (/snapshot/cli/lib/bootstrap.js)
at compose (/snapshot/cli/lib/bootstrap.js)
From previous event:
at /snapshot/cli/lib/router.js
at processImmediate (internal/timers.js:464:21)
From previous event:
at Object.run (/snapshot/cli/lib/router.js)
at run (/snapshot/cli/lib/engine.js)
at /snapshot/cli/lib/router.js
From previous event:
at Object.eventWrapper (/snapshot/cli/lib/router.js)
at Engine.engineCmd (/snapshot/cli/lib/engine.js)
at Engine.run (/snapshot/cli/lib/engine.js)
at /snapshot/cli/node_modules/@lando/platformsh/app.js
at processImmediate (internal/timers.js:464:21)
From previous event:
at /snapshot/cli/node_modules/@lando/platformsh/app.js
From previous event:
at AsyncEvents. (/snapshot/cli/node_modules/@lando/platformsh/app.js)
at AsyncEvents.handle (/snapshot/cli/lib/events.js)
at /snapshot/cli/lib/events.js
From previous event:
at AsyncEvents.emit (/snapshot/cli/lib/events.js)
From previous event:
at App.start (/snapshot/cli/lib/app.js)
at /snapshot/cli/lib/app.js
From previous event:
at App.restart (/snapshot/cli/lib/app.js)
at Object.run (/snapshot/cli/plugins/lando-core/tasks/restart.js)
From previous event:
at /snapshot/cli/lib/cli.js
From previous event:
at Object.handler (/snapshot/cli/lib/cli.js)
at Object.runCommand (/snapshot/cli/node_modules/yargs/lib/command.js:238:44)
at Object.parseArgs [as _parseArgs] (/snapshot/cli/node_modules/yargs/yargs.js:1063:30)
at Function.get [as argv] (/snapshot/cli/node_modules/yargs/yargs.js:1004:21)
at Cli.init (/snapshot/cli/lib/cli.js)
at Cli.run (/snapshot/cli/lib/cli.js)
at Object. (/snapshot/cli/bin/lando.js)
at Module._compile (pkg/prelude/bootstrap.js:1794:22)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
at Module.load (internal/modules/cjs/loader.js:950:32)
at Function.Module._load (internal/modules/cjs/loader.js:790:12)
at Function.runMain (pkg/prelude/bootstrap.js:1847:12)
at internal/main/run_main_module.js:17:47