README.md

@@ -13,7 +13,7 @@ Nintendo GameBoy Advance™ emulator and debugger, written in Rust.
 The file at [`external/gamecontrollerdb.txt`](./external/gamecontrollerdb.txt) is not my work - it is sourced from [this GitHub repository](https://github.com/mdqinc/SDL_GameControllerDB) and covered by the appropriate license present in said repository.
 
 ## Usage
-You will need to specify the BIOS file to run with, using the `--bios` command-line argument. Note that there is such a BIOS ROM present in this directory at [`./external/gba_bios.bin`](./external/gba_bios.bin).
+You will need to specify the BIOS file to run with, using the `--bios` command-line argument. Note that there is such a BIOS ROM present in this directory at [`./external/gba_bios.bin`](./external/gba_bios.bin)
 
 ## Key bindings
 GBA key bindings:

flake.nix

@@ -1,7 +1,11 @@
 {
-  description = "Rust development environment for rustboyadvance-ng";
+  description = "Rust development environment for oxitoko using fenix";
 
   inputs = {
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+    };
     utils.url = "github:numtide/flake-utils";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
   };
@@ -10,17 +14,26 @@
     self,
     nixpkgs-unstable,
     utils,
+    fenix,
     ...
   }:
     utils.lib.eachDefaultSystem
     (
       system: let
-        pkgs = import nixpkgs-unstable { inherit system; };
+        pkgs = import nixpkgs-unstable {
+          inherit system;
+          overlays = [fenix.overlays.default];
+        };
+        toolchain = pkgs.fenix.complete;
         dependencies = with pkgs; [ SDL2 SDL2_image ];
       in rec
       {
         # Executed by `nix build`
-        packages.default = pkgs.rustPlatform.buildRustPackage {
+        packages.default =
+          (pkgs.makeRustPlatform {
+            inherit (toolchain) cargo rustc;
+          })
+          .buildRustPackage {
             pname = "rustboyadvance-ng";
             name = "rustboyadvance-ng";
             src = ./.;
@@ -33,10 +46,19 @@
             };
             buildInputs = dependencies;
           };
+
         # Executed by `nix run`
         apps.default = utils.lib.mkApp {drv = packages.default;};
+
         # Used by `nix develop`
-        devShells.default = pkgs.mkShell rec { buildInputs = dependencies; };
+        devShells.default = pkgs.mkShell rec {
+          buildInputs = with pkgs; [
+            (with toolchain; [
+              cargo rustc rust-src clippy rustfmt # rust components
+            ])
+          ] ++ dependencies;
+          RUST_SRC_PATH = "${toolchain.rust-src}/lib/rustlib/src/rust/library";
+        };
       }
     );
 }