init

.envrc

@@ -0,0 +1 @@
+use_nix

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.toml

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+[package]
+name = "Mercury"
+version = "0.1.0"
+authors = ["Daniel Olsen <daniel.olsen99@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

shell.nix

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+let
+  moz_overlay = import (builtins.fetchTarball https://github.com/mozilla/nixpkgs-mozilla/archive/master.tar.gz);
+  nixpkgs = import <nixpkgs> { overlays = [ moz_overlay ]; };
+  rustNightlyChannel = (nixpkgs.rustChannelOf { date = "2020-03-19"; channel = "nightly"; }).rust.override {
+    extensions = [
+			"rust-src"
+			"rls-preview"
+			"clippy-preview"
+			"rustfmt-preview"
+		];
+  };
+	rustStableChannel = nixpkgs.latest.rustChannels.stable.rust.override {
+		extensions = [
+			"rust-src"
+			"rls-preview"
+			"clippy-preview"
+			"rustfmt-preview"
+		];
+  };
+in
+with nixpkgs;
+  stdenv.mkDerivation {
+    name = "moz_overlay_shell";
+    buildInputs = [
+      rustStableChannel
+    ];
+  }

src/main.rs

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+fn main() {
+    println!("Hello, world!");
+}