rls and rustfmt

README.md

@@ -0,0 +1,3 @@
+# XeOS
+
+A weird operating system, do not fear.

nix/rust.nix

@@ -4,6 +4,8 @@ let
   pkgs =
     import sources.nixpkgs { overlays = [ (import sources.nixpkgs-mozilla) ]; };
 in (pkgs.rustChannelOf {
-  date = "2020-03-25";
+  date = "2020-03-19";
   channel = "nightly";
-}).rust.override { extensions = [ "rust-src" ]; }
+}).rust.override {
+  extensions = [ "rust-src" "rls-preview" "rustfmt-preview" ];
+}