Cargo Features

[dependencies]
lzss = { version = "0.9.1", default-features = false, features = ["std", "alloc", "safe"] }
default = safe, std

These default features are set whenever lzss is added without default-features = false somewhere in the dependency tree.

std default = alloc

Enables std of void

alloc std
safe default

LZSS has 4 features without comments.