setup flake

flake.nix

@@ -0,0 +1,20 @@
+{
+  description = "A very basic flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }: let
+    pkgs = nixpkgs.legacyPackages."x86_64-linux";
+  in {
+
+    devShells."x86_64-linux".default = pkgs.mkShell {
+      buildInputs = with pkgs; [
+        cargo rustc rustfmt clippy rust-analyzer glibc
+      ];
+      nativeBuildInputs = [ pkgs.pkg-config ];
+      env.RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
+    };
+  };
+}