nix: drop flake parts

flake.lock

@@ -1,23 +1,5 @@
 {
   "nodes": {
-    "flake-parts": {
-      "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
-      },
-      "locked": {
-        "lastModified": 1749398372,
-        "narHash": "sha256-tYBdgS56eXYaWVW3fsnPQ/nFlgWi/Z2Ymhyu21zVM98=",
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "rev": "9305fe4e5c2a6fcf5ba6a3ff155720fbe4076569",
-        "type": "github"
-      },
-      "original": {
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1778274207,
@@ -34,24 +16,8 @@
         "type": "github"
       }
     },
-    "nixpkgs-lib": {
-      "locked": {
-        "lastModified": 1748740939,
-        "narHash": "sha256-rQaysilft1aVMwF14xIdGS3sj1yHlI6oKQNBRTF40cc=",
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "rev": "656a64127e9d791a334452c6b6606d17539476e2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "type": "github"
-      }
-    },
     "root": {
       "inputs": {
-        "flake-parts": "flake-parts",
         "nixpkgs": "nixpkgs",
         "scenefx": "scenefx"
       }

flake.nix

@@ -1,7 +1,6 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-    flake-parts.url = "github:hercules-ci/flake-parts";
     scenefx = {
       url = "github:wlrfx/scenefx";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -10,54 +9,65 @@
 
   outputs = {
     self,
-    flake-parts,
+    nixpkgs,
-    ...
+    scenefx,
-  } @ inputs:
+  }: let
-    flake-parts.lib.mkFlake {inherit inputs;} {
+    inherit (nixpkgs.lib) genAttrs;
-      imports = [
-        inputs.flake-parts.flakeModules.easyOverlay
-      ];
 
-      flake = {
+    # Systems mangowm supports. Options that call `forEachSystem` will generate an attribute for each of these options.
-        hmModules.mango = import ./nix/hm-modules.nix self;
+    systems = [
-        nixosModules.mango = import ./nix/nixos-modules.nix self;
+      "x86_64-linux"
-      };
+      "aarch64-linux"
+    ];
 
-      perSystem = {
+    # Helper function that generates an attribute set by calling the provided `perSystem` function for each system in `systems` defined above.
-        config,
+    forEachSystem = perSystem:
+      genAttrs systems (
+        system:
+          perSystem {
+            inherit system;
+            pkgs = nixpkgs.legacyPackages.${system};
+          }
+      );
+  in {
+    overlays.default = final: prev: {
+      inherit (self.packages.${final.stdenv.hostPlatform.system}) mango;
+    };
+
+    packages = forEachSystem (
+      {
         pkgs,
-        ...
+        system,
       }: let
-        inherit (pkgs) callPackage ;
+        inherit (pkgs) callPackage;
         mango = callPackage ./nix {
-          inherit (inputs.scenefx.packages.${pkgs.stdenv.hostPlatform.system}) scenefx;
+          inherit (scenefx.packages.${system}) scenefx;
-        };
-        shellOverride = old: {
-          nativeBuildInputs = old.nativeBuildInputs ++ [];
-          buildInputs = old.buildInputs ++ [];
         };
       in {
-        packages.default = mango;
+        inherit mango;
-        overlayAttrs = {
+        default = mango;
-          inherit (config.packages) mango;
+        hm-options-json = callPackage (import ./nix/generate-options.nix self) {
+          module = ./nix/hm-modules.nix;
+          optionPrefix = "wayland.windowManager.mango.";
         };
-        packages = {
+        nixos-options-json = callPackage (import ./nix/generate-options.nix self) {
-          inherit mango;
+          module = ./nix/nixos-modules.nix;
-          hm-options-json = pkgs.callPackage (import ./nix/generate-options.nix self) {
+          optionPrefix = "programs.mango.";
-            module = ./nix/hm-modules.nix;
-            optionPrefix = "wayland.windowManager.mango.";
-          };
-          nixos-options-json = pkgs.callPackage (import ./nix/generate-options.nix self) {
-            module = ./nix/nixos-modules.nix;
-            optionPrefix = "programs.mango.";
-          };
         };
-        devShells.default = mango.overrideAttrs shellOverride;
+      }
-        formatter = pkgs.alejandra;
+    );
-      };
+
-      systems = [
+    nixosModules.mango = import ./nix/nixos-modules.nix self;
-        "x86_64-linux"
+    hmModules.mango = import ./nix/hm-modules.nix self;
-        "aarch64-linux"
+
-      ];
+    devShells = forEachSystem (
-    };
+      {system, ...}: {
+        default = self.packages.${system}.mango;
+      }
+    );
+
+    formatter = forEachSystem (
+      {pkgs, ...}: pkgs.alejandra
+    );
+  };
 }