Drop flake parts

Use native nix functions to speed up and reduce complexity

nix/devShells/default.nix

@@ -1,16 +1,46 @@
 {
+  systems,
+  ...
+}@inputs:
 
-  perSystem =
-    { pkgs, ... }:
+let
+  inherit (inputs.nixpkgs) lib;
+in
+
+let
+  devShellOf =
+    system:
     let
-      call = x: import x { inherit pkgs; };
+      pkgs = import inputs.nixpkgs { inherit system; };
     in
     {
-      devShells =
-        # devShells that I can't commit to repos themselves
-        call ./of-repos.nix
-        # Per language basic tooling
-        // call ./of-languages.nix;
-    };
+      default =
+        let
+          pre-commit-check = inputs.pre-commit-hooks.lib.${system}.run {
+            src = ./.;
+            hooks = {
+              # nix
+              nixfmt-rfc-style.enable = true;
+              statix.enable = true;
+              deadnix.enable = true;
 
+              # lua
+              stylua.enable = true;
+
+              # toml
+              taplo.enable = true;
+            };
+          };
+        in
+        inputs.nixpkgs.legacyPackages.${system}.mkShell {
+          inherit (pre-commit-check) shellHook;
+          buildInputs = pre-commit-check.enabledPackages;
+        };
+    }
+    // import ./of-repos.nix { inherit pkgs; }
+    // import ./of-languages.nix { inherit pkgs; };
+in
+
+{
+  devShells = lib.genAttrs systems devShellOf;
 }