How to install mypy

Mypy is an optional static type checker for Python. Everything below is context rather than instruction — the project publishes its own material, and this note simply points at what matters.

Paths onto a machine

Nothing universal applies here. Maintainers normally spell out the supported options, and the answer can differ between platforms and between releases.

Who is behind it

Direction comes from the people who write the code. Their decisions on releases and support are the ones that matter.

Prior checks

Confirm the platform still falls inside the supported range. Projects of this kind move quickly, and older systems tend to be dropped with little ceremony.

Interpreting what you see

Most unexpected behaviour traces back to resolution rather than to the project. An older copy sitting earlier in the path, or a version manager pointing somewhere else, will do it every time.

What this domain is

This domain carries reading notes only. Nothing is stored or re-published here, and every project remains where its authors placed it.

Keeping environments clean

Isolating environments, whether with a version manager or per-project directories, removes a whole category of confusing behaviour later on.