Cargo Features

[dependencies]
puzzle = { version = "0.1.0", default-features = false, features = ["gd", "jpeg-decoder"] }
default = gd

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

gd default

Features from optional dependencies

jpeg-decoder implicit feature

Enables jpeg-decoder ^0.1.15

jpeg-decoder:

JPEG decoder