Initial commit

flake.nix

@@ -0,0 +1,43 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, rust-overlay }:
+  let
+    inherit (nixpkgs) lib;
+
+    systems = [
+      "x86_64-linux"
+      "aarch64-linux"
+      "armv7l-linux"
+    ];
+
+    forAllSystems = f: lib.genAttrs systems (system: let
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = [
+          (import rust-overlay)
+        ];
+      };
+
+      rust-bin = rust-overlay.lib.mkRustBin { } pkgs.buildPackages;
+      toolchain = rust-bin.stable.latest.default.override {
+        extensions = [ "rust-src" "rust-analyzer" "rust-std" ];
+      };
+    in f system pkgs toolchain);
+  in {
+    devShells = forAllSystems (system: pkgs: toolchain: {
+      default = pkgs.mkShell {
+        nativeBuildInputs = [
+          toolchain
+        ];
+
+        RUST_SRC_PATH = "${toolchain}/lib/rustlib/src/rust/library";
+      };
+    });
+  };
+}