init lux

flake.nix

@@ -0,0 +1,55 @@
+{
+  description = "Lux - A functional programming language with first-class effects";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, rust-overlay, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs { inherit system overlays; };
+        rustToolchain = pkgs.rust-bin.stable.latest.default.override {
+          extensions = [ "rust-src" "rust-analyzer" ];
+        };
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            rustToolchain
+            cargo-watch
+            cargo-edit
+          ];
+
+          RUST_BACKTRACE = "1";
+          RUST_SRC_PATH = "${rustToolchain}/lib/rustlib/src/rust/library";
+
+          shellHook = ''
+            printf "\n"
+            printf "  \033[1;35m╦  ╦ ╦╦ ╦\033[0m\n"
+            printf "  \033[1;35m║  ║ ║╔╣\033[0m\n"
+            printf "  \033[1;35m╩═╝╚═╝╩ ╩\033[0m  v0.1.0\n"
+            printf "\n"
+            printf "  Functional language with first-class effects\n"
+            printf "\n"
+            printf "  \033[1mCommands:\033[0m\n"
+            printf "    cargo build     Build the compiler\n"
+            printf "    cargo run       Start the REPL\n"
+            printf "    cargo test      Run tests\n"
+            printf "    cargo run -- \033[3m<file.lux>\033[0m  Run a file\n"
+            printf "\n"
+          '';
+        };
+
+        packages.default = pkgs.rustPlatform.buildRustPackage {
+          pname = "lux";
+          version = "0.1.0";
+          src = ./.;
+          cargoLock.lockFile = ./Cargo.lock;
+        };
+      }
+    );
+}