pipx install --update

pipx install:

• install if missing.
• if available and in the right or wrong version (spec not respected), does nothing

pipx install --force:

• always reinstall, even if available and if spec respected

pipx update:

• always update, even when spec is respected
• if not installed, fail

pipx update --install:

• always update, even when spec is respected
• if not installed, install.

What I need is a command that will:

• if not install, install respecting the provided spec
• if installed but the spec is not respected, update to the spec, allowing downgrade
• if installed and spec is respected, does nothing, not even a network connectivity

Example:

$ pipx install --upgrade pylint<7

• if the current pylint venv respects <7, does nothing.
• If the current pylint venv does not respect <7, update
• if no pylint installed, install to version <7