nix: remove subflake

flake.nix

@@ -1,12 +1,22 @@
 {
   description = "Discord bot for Prism Launcher";
 
-  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+
+    flake-checks.url = "github:getchoo/flake-checks";
+
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
 
   outputs = {
     self,
     nixpkgs,
-    ...
+    flake-checks,
+    rust-overlay,
   }: let
     systems = [
       "x86_64-linux"
@@ -17,11 +27,80 @@
 
     forAllSystems = fn: nixpkgs.lib.genAttrs systems (system: fn nixpkgs.legacyPackages.${system});
   in {
+    checks = forAllSystems (pkgs: let
+      flake-checks' = flake-checks.lib.mkChecks {
+        inherit pkgs;
+        root = ./.;
+      };
+    in {
+      check-actionlint = flake-checks'.actionlint;
+      check-alejandra = flake-checks'.alejandra;
+      check-deadnix = flake-checks'.deadnix;
+      check-rustfmt = flake-checks'.rustfmt;
+      check-statix = flake-checks'.statix;
+    });
+
+    devShells = forAllSystems (pkgs: {
+      default = pkgs.mkShell {
+        packages = with pkgs; [
+          redis
+
+          # linters & formatters
+          actionlint
+          nodePackages.prettier
+
+          # rust tools
+          clippy
+          rustfmt
+          rust-analyzer
+
+          # nix tools
+          self.formatter.${system}
+          deadnix
+          nil
+          statix
+        ];
+
+        inputsFrom = [self.packages.${pkgs.system}.refraction];
+        RUST_SRC_PATH = "${pkgs.rustPlatform.rustLibSrc}";
+      };
+    });
+
+    formatter = forAllSystems (pkgs: pkgs.alejandra);
+
     nixosModules.default = import ./nix/module.nix self;
 
-    packages = forAllSystems (pkgs: rec {
+    packages = forAllSystems ({
+      lib,
+      pkgs,
+      system,
+      ...
+    }: let
+      packages' = self.packages.${system};
+
+      mkStatic = pkgs.callPackage ./nix/static.nix {
+        inherit (self.packages.${pkgs.system}) refraction;
+        rust-overlay = rust-overlay.packages.${system};
+      };
+
+      mkContainerFor = refraction: let
+        architecture = refraction.stdenv.hostPlatform.ubootArch;
+      in
+        pkgs.dockerTools.buildLayeredImage {
+          name = "refraction";
+          tag = "latest-${architecture}";
+          config.Cmd = [(lib.getExe refraction)];
+          inherit architecture;
+        };
+    in {
       refraction = pkgs.callPackage ./nix/derivation.nix {inherit self;};
-      default = refraction;
+
+      static-x86_64 = mkStatic {arch = "x86_64";};
+      static-aarch64 = mkStatic {arch = "aarch64";};
+      container-x86_64 = mkContainerFor packages'.static-x86_64;
+      container-aarch64 = mkContainerFor packages'.static-aarch64;
+
+      default = packages'.refraction;
     });
 
     overlays.default = _: prev: {