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Re-export is no longer just for optional serde cfg

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David Tolnay
2019-01-18 00:48:05 -08:00
parent face857d5e
commit 9ec68e5829
2 changed files with 1 additions and 58 deletions
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serde/Cargo.toml
+1 -24
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@@ -32,30 +32,7 @@ features = ["derive", "rc"]
[features]
default = ["std"]
# Re-export the derive(Serialize, Deserialize) macros. This is intended for
# library crates that provide optional Serde impls behind a Cargo cfg of their
# own.
#
# Mainly this is a workaround for limitations associated with
# rust-lang/cargo#1286 in which a library crate cannot use one "serde" cfg in
# Cargo to enable dependencies on both serde and serde_derive crates.
#
# The recommended way to provide optional Serde support that requires derive is
# as follows. In particular, please do not name your library's Serde feature
# anything other than "serde".
#
# [dependencies]
# serde = { version = "1.0", optional = true, features = ["derive"] }
#
# Within the library, these optional Serde derives would be written like this.
#
# #[cfg(feature = "serde")]
# #[macro_use]
# extern crate serde;
#
# #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
# struct ...
#
# Provide derive(Serialize, Deserialize) macros.
derive = ["serde_derive"]
# Provide impls for common standard library types like Vec<T> and HashMap<K, V>.