Cargo Features

[dependencies]
packer_derive = { version = "0.5.6", default-features = false, features = ["always_pack", "ignore"] }
default = ignore

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

always_pack
ignore default = glob

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.

glob ignore