requests-oauthlib Error When Installing ERPNext

[teachernightowl]

Context: Fresh install of Debian 12.

When I run bench get-app erpnext --resolve-deps, I get this error...

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
frappe 16.0.0.dev0 requires requests-oauthlib~=2.0.0, but you have requests-oauthlib 1.3.1 which is incompatible.

Yet here is the pertinent output from pip3 list...

Package            Version
------------------ -----------
...
requests-oauthlib  2.0.0
...

Why doesn't bench get-app erpnext --resolve-deps recognize that requests-oauthlib 2.0.0 is present?