Cargo Features

[dependencies]
skl = { version = "0.4.0", default-features = false, features = ["std", "alloc", "memmap"] }
default = std

The std feature is set by default whenever skl is added without default-features = false somewhere in the dependency tree.

std default memmap?

Enables rand

alloc
memmap = fs4, memmap2, std

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

fs4 memmap?
memmap2 memmap?