feat(nix): flake-utils -> flake-parts

Signed-off-by: seth <getchoo@tuta.io>

nix/dev.nix

@@ -0,0 +1,44 @@
+{
+  inputs,
+  self,
+  ...
+}: {
+  perSystem = {
+    system,
+    pkgs,
+    ...
+  }: {
+    checks = {
+      pre-commit-check = inputs.pre-commit-hooks.lib.${system}.run {
+        src = self;
+        hooks = {
+          markdownlint.enable = true;
+
+          alejandra.enable = true;
+          deadnix.enable = true;
+
+          clang-format = {
+            enable =
+              false; # As most of the codebase is **not** formatted, we don't want clang-format yet
+            types_or = ["c" "c++"];
+          };
+        };
+      };
+    };
+
+    devShells.default = pkgs.mkShell {
+      inherit (self.checks.${system}.pre-commit-check) shellHook;
+      packages = with pkgs; [
+        nodePackages.markdownlint-cli
+        alejandra
+        deadnix
+        clang-tools
+      ];
+
+      inputsFrom = [self.packages.${system}.default];
+      buildInputs = with pkgs; [ccache ninja];
+    };
+
+    formatter = pkgs.alejandra;
+  };
+}