Feature-gate CPU pinning, since it only works on Linux

aquatic_common/Cargo.toml

@@ -10,11 +10,13 @@ repository = "https://github.com/greatest-ape/aquatic"
 [lib]
 name = "aquatic_common"
 
+[features]
+cpu-pinning = ["affinity"]
+
 [dependencies]
 ahash = "0.7"
 anyhow = "1"
 arc-swap = "1"
-affinity = "0.1"
 hashbrown = "0.11.2"
 hex = "0.4"
 indexmap-amortized = "1"
@@ -22,3 +24,5 @@ log = "0.4"
 privdrop = "0.5"
 rand = { version = "0.8", features = ["small_rng"] }
 serde = { version = "1", features = ["derive"] }
+
+affinity = { version = "0.1", optional = true }

aquatic_common/src/lib.rs

@@ -5,6 +5,7 @@ use ahash::RandomState;
 use rand::Rng;
 
 pub mod access_list;
+#[cfg(feature = "cpu-pinning")]
 pub mod cpu_pinning;
 pub mod privileges;