Cargo Features

[dependencies]
crs-definitions = { version = "0.3.0", default-features = false, features = ["proj4", "wkt"] }
default = proj4, wkt

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

proj4 default

Affects defs::Def.proj4

wkt default

Affects defs::Def.wkt