fucking fuk

Cargo.toml

@@ -24,5 +24,8 @@ memmap = "0.7"
 getrandom = "0.1"
 base64 = "0.12"
 
-[target.'cfg(not(nightly))'.dependencies]
+[build-dependencies]
+rustc_version = "0.2"
+
+[target.'cfg(not(nightly))'.dependencies] # Fuck this. Just. Fuck. It.
 linked-list = "0.0"

build.rs

@@ -0,0 +1,24 @@
+
+extern crate rustc_version;
+use rustc_version::{version, version_meta, Channel};
+
+fn main() {
+    // Assert we haven't travelled back in time
+    assert!(version().unwrap().major >= 1);
+
+    // Set cfg flags depending on release channel
+    match version_meta().unwrap().channel {
+        Channel::Stable => {
+            println!("cargo:rustc-cfg=stable");
+        }
+        Channel::Beta => {
+            println!("cargo:rustc-cfg=beta");
+        }
+        Channel::Nightly => {
+            println!("cargo:rustc-cfg=nightly");
+        }
+        Channel::Dev => {
+            println!("cargo:rustc-cfg=dev");
+        }
+    }
+}