Cargo Features

[dependencies]
valley-free = { version = "0.2.0", default-features = false, features = ["extension-module"] }
default = extension-module

The extension-module feature is set by default whenever valley-free is added without default-features = false somewhere in the dependency tree.

extension-module default

Enables extension-module of pyo3 ^0.15.1

pyo3:

Use this feature when building an extension module.
It tells the linker to keep the python symbols unresolved,
so that the module can also be used with statically linked python interpreters.

valley-free has 2 features without comments.