Dunk on NT and Darwin bc they don't use O_DIRECT which causes serious

problems for this project.

Cargo.toml

@@ -8,7 +8,6 @@ license = "MIT"
 publish = false
 
 [dependencies]
-libc = "0.2.178"
 ron = ">=0.8, <0.13"
 #rust-i18n = "3.1.3"
 
@@ -23,3 +22,9 @@ features = ["derive"]
 [dependencies.serde]
 version = "1.0"
 features = ["derive"]
+
+[target.'cfg(all(unix, not(target_os = "macos")))'.dependencies]
+# Yes. For one constant, this library is required.
+# And yes, I spent time tracking down the first release with that constant.
+# v0.2.25 is almost 9 years old as of writing this comment.
+libc = "~0.2.25"