feat: use flake-parts to clean up the flake.nix

This is much more manageable!

flake-modules/checks.nix

@@ -0,0 +1,26 @@
+{ lib, ... }:
+{
+  perSystem =
+    { pkgs, self', ... }:
+    {
+      checks =
+        let
+          src = builtins.path {
+            path = ../.;
+            name = "configuration.nix";
+          };
+          runCmdInSrc =
+            name: cmd:
+            pkgs.runCommandNoCC name { } ''
+              cd ${src}
+              ${cmd}
+              mkdir $out
+            '';
+        in
+        {
+          fmt = runCmdInSrc "fmt-src" "${lib.getExe self'.formatter} --check .";
+          lint = runCmdInSrc "lint-src" "${lib.getExe pkgs.statix} check .";
+          typos = runCmdInSrc "typos-src" "${lib.getExe pkgs.typos} .";
+        };
+    };
+}

flake-modules/default.nix

@@ -0,0 +1,25 @@
+{ inputs, ... }:
+let
+  overlays = builtins.attrValues inputs.self.overlays;
+in
+{
+  imports = [
+    ./checks.nix
+    ./devshells.nix
+    ./docs.nix
+    ./example-vm.nix
+    ./nixos-modules.nix
+    ./nvim.nix
+    ./overlays.nix
+    ./scripts.nix
+  ];
+
+  perSystem =
+    { system, pkgs, ... }:
+    {
+      _module.args.pkgs = import inputs.nixpkgs { inherit system overlays; };
+
+      # Nix files formatter (run `nix fmt`)
+      formatter = pkgs.nixfmt-rfc-style;
+    };
+}

flake-modules/devshells.nix

@@ -0,0 +1,13 @@
+_: {
+  perSystem =
+    { pkgs, self', ... }:
+    {
+      devShells.default = pkgs.mkShellNoCC {
+        buildInputs = [
+          pkgs.just
+          self'.packages.nvim
+        ];
+        QEMU_OPTS_WL = "--enable-kvm -smp 4 -device virtio-gpu-rutabaga,gfxstream-vulkan=on,cross-domain=on,hostmem=2G,wsi=headless";
+      };
+    };
+}

flake-modules/docs.nix

@@ -0,0 +1,16 @@
+{ lib, ... }:
+{
+  perSystem =
+    { pkgs, ... }:
+    {
+      packages = {
+        # Documentation
+        inherit (import ../docs { inherit pkgs lib; })
+          docs
+          nixos-markdown
+          nvim-markdown
+          home-markdown
+          ;
+      };
+    };
+}

flake-modules/example-vm.nix

@@ -0,0 +1,46 @@
+{ inputs, lib, ... }:
+{
+  # Example vm configuration
+  flake.nixosConfigurations.vm =
+    let
+      system = "x86_64-linux";
+      overlays = builtins.attrValues inputs.self.overlays;
+      config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [ "steam-original" ];
+      pkgs = import inputs.nixpkgs { inherit system overlays config; };
+    in
+    lib.nixosSystem {
+      inherit system pkgs;
+      modules = [
+        inputs.self.nixosModules.vm # import vm module
+        {
+          time.timeZone = "Europe/Berlin";
+          i18n.defaultLocale = "en_US.UTF-8";
+          users.users.jdoe = {
+            password = "example";
+            isNormalUser = true;
+            extraGroups = [
+              "wheel"
+              "video"
+              "networkmanager"
+            ];
+          };
+          home-manager.users.jdoe = {
+            home = {
+              username = "jdoe";
+              homeDirectory = "/home/jdoe";
+            };
+            jhome = {
+              enable = true;
+              gui.enable = true;
+              dev.rust.enable = true;
+            };
+          };
+          nix.registry.nixpkgs.flake = inputs.nixpkgs;
+          jconfig = {
+            enable = true;
+            gui.enable = true;
+          };
+        }
+      ];
+    };
+}

flake-modules/nixos-modules.nix

@@ -0,0 +1,43 @@
+{ inputs, lib, ... }:
+{
+  flake.nixosModules =
+    let
+      nvim-config.imports = [
+        inputs.nixvim.homeManagerModules.nixvim
+        ../nvim
+      ];
+      homeManagerModuleSandalone = import ../home {
+        inherit nvim-config;
+        inherit (inputs) stylix;
+      };
+      homeManagerModuleNixOS = import ../home { inherit nvim-config; };
+      nixosModule = {
+        imports = [
+          (import ../system { inherit (inputs) stylix; })
+          inputs.home-manager.nixosModules.home-manager
+        ] ++ lib.optional (inputs.lix-module != null) inputs.lix-module.nixosModules.default;
+        home-manager = {
+          useGlobalPkgs = true;
+          useUserPackages = true;
+          sharedModules = [ homeManagerModuleNixOS ];
+        };
+        # Pin nixpkgs
+        nix.registry.nixpkgs.flake = inputs.nixpkgs;
+      };
+
+      machines = [ "vm" ];
+      mkMachine = hostname: {
+        imports = [
+          nixosModule
+          (import (../machines + "/${hostname}"))
+        ];
+        home-manager.sharedModules = [ { jhome.hostName = hostname; } ];
+      };
+      machineModules = lib.genAttrs machines mkMachine;
+    in
+    {
+      default = nixosModule;
+      inherit nixosModule homeManagerModuleNixOS homeManagerModuleSandalone;
+    }
+    // machineModules;
+}

flake-modules/nvim.nix

@@ -0,0 +1,24 @@
+{ inputs, ... }:
+let
+  standalone = ../nvim/standalone.nix;
+in
+{
+  flake.overlays.nixvim = inputs.nixvim.overlays.default;
+
+  perSystem =
+    { pkgs, system, ... }:
+    {
+      # Check standalone nvim build
+      checks.nvim = inputs.nixvim.lib.${system}.check.mkTestDerivationFromNixvimModule {
+        inherit pkgs;
+        module = ../nvim/standalone.nix;
+      };
+
+      # Nvim standalone module
+      packages.nvim = inputs.nixvim.legacyPackages.${system}.makeNixvimWithModule {
+        inherit pkgs;
+        module = standalone;
+      };
+
+    };
+}

flake-modules/overlays.nix

@@ -0,0 +1,26 @@
+{ inputs, ... }:
+{
+  # Add unstable packages to overlay
+  flake.overlays.unstable =
+    final: prev:
+    let
+      unstablePkgs = inputs.unstable.legacyPackages.${prev.stdenv.hostPlatform.system};
+    in
+    {
+      # Get unstable packages
+      unstable = unstablePkgs;
+
+      # Update vim plugins with the versions from unstable
+      vimPlugins = prev.vimPlugins // unstablePkgs.vimPlugins;
+
+      # Get specific packages from unstable
+      inherit (unstablePkgs)
+        gitoxide
+        jujutsu
+        neovim-unwrapped
+        ruff # nixpkgs stable version is improperly configured by nixvim
+        # wezterm
+        ;
+    };
+
+}

flake-modules/scripts.nix

@@ -0,0 +1,14 @@
+let
+  scripts = import ../scripts;
+in
+{
+  # Add scripts to overlay
+  flake.overlays.scripts = final: prev: scripts final;
+
+  # Add scripts to packages
+  perSystem =
+    { pkgs, ... }:
+    {
+      packages = scripts pkgs;
+    };
+}

flake.lock

@@ -117,16 +117,15 @@
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": [
-          "nixvim",
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1726153070,
+        "lastModified": 1727826117,
-        "narHash": "sha256-HO4zgY0ekfwO5bX0QH/3kJ/h4KvUDFZg8YpkNwIbg1U=",
+        "narHash": "sha256-K5ZLCyfO/Zj9mPFldf3iwS6oZStJcU4tSpiXTMYaaL0=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "bcef6817a8b2aa20a5a6dbb19b43e63c5bf8619a",
+        "rev": "3d04084d54bedc3d6b8b736c70ef449225c361b1",
         "type": "github"
       },
       "original": {
@@ -278,7 +277,9 @@
       "inputs": {
         "devshell": [],
         "flake-compat": [],
-        "flake-parts": "flake-parts",
+        "flake-parts": [
+          "flake-parts"
+        ],
         "git-hooks": [],
         "home-manager": [
           "home-manager"
@@ -306,6 +307,7 @@
     },
     "root": {
       "inputs": {
+        "flake-parts": "flake-parts",
         "home-manager": "home-manager",
         "lix-module": "lix-module",
         "nixpkgs": "nixpkgs",

flake.nix

@@ -2,6 +2,7 @@
 {
   # A helpful description of your flake
   description = "My NixOS configuration";
+
   # Flake inputs
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-24.05";
@@ -33,6 +34,7 @@
       inputs = {
         nixpkgs.follows = "unstable";
         home-manager.follows = "home-manager";
+        flake-parts.follows = "flake-parts";
         # disable optional inputs
         flake-compat.follows = "";
         nix-darwin.follows = "";
@@ -41,205 +43,20 @@
         git-hooks.follows = "";
       };
     };
+    flake-parts = {
+      url = "github:hercules-ci/flake-parts";
+      inputs.nixpkgs-lib.follows = "nixpkgs";
+    };
     # For deduplication
     systems.url = "github:nix-systems/default";
   };
 
   # Flake outputs that other flakes can use
   outputs =
-    {
+    inputs:
-      self,
+    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
-      nixpkgs,
+      systems = import inputs.systems;
-      unstable,
-      stylix,
-      home-manager,
-      nixvim,
-      lix-module,
-      systems,
-    }:
-    let
-      inherit (nixpkgs) lib;
-      # Helpers for producing system-specific outputs
-      supportedSystems = import systems;
-      forEachSupportedSystem =
-        f:
-        nixpkgs.lib.genAttrs supportedSystems (
-          system:
-          f {
-            inherit system;
-            pkgs = nixpkgs.legacyPackages.${system};
-          }
-        );
-      overlays = builtins.attrValues self.overlays;
-      scripts_pkgs = import ./scripts;
-      scripts = final: prev: scripts_pkgs final;
-    in
-    {
-      checks = forEachSupportedSystem (
-        { pkgs, system }:
-        let
-          src = builtins.path {
-            path = ./.;
-            name = "configuration.nix";
-          };
-          runCmdInSrc =
-            name: cmd:
-            pkgs.runCommandNoCC name { } ''
-              cd ${src}
-              ${cmd}
-              mkdir $out
-            '';
-        in
-        {
-          nvim = nixvim.lib.${system}.check.mkTestDerivationFromNixvimModule {
-            pkgs = import nixpkgs { inherit system overlays; };
-            module = ./nvim/standalone.nix;
-          };
-          fmt = runCmdInSrc "fmt-src" "${lib.getExe self.formatter.${system}} --check .";
-          lint = runCmdInSrc "lint-src" "${lib.getExe pkgs.statix} check .";
-          typos = runCmdInSrc "typos-src" "${lib.getExe pkgs.typos} .";
-        }
-      );
 
-      packages = forEachSupportedSystem (
+      imports = [ ./flake-modules ];
-        { pkgs, system }:
-        scripts_pkgs pkgs
-        // {
-          inherit (import ./docs { inherit pkgs lib; })
-            docs
-            nixos-markdown
-            nvim-markdown
-            home-markdown
-            ;
-          # Nvim standalone module
-          nvim = nixvim.legacyPackages.${system}.makeNixvimWithModule {
-            pkgs = import nixpkgs { inherit system overlays; };
-            module = ./nvim/standalone.nix;
-          };
-        }
-      );
-
-      # Provide necessary overlays
-      overlays = {
-        inherit scripts;
-        nixvim = nixvim.overlays.default;
-        unstable =
-          final: prev:
-          let
-            unstablePkgs = unstable.legacyPackages.${prev.system};
-          in
-          {
-            # Get unstable packages
-            unstable = unstablePkgs;
-
-            # Update vim plugins with the versions from unstable
-            vimPlugins = prev.vimPlugins // unstablePkgs.vimPlugins;
-            # Get specific packages from unstable
-            inherit (unstablePkgs)
-              gitoxide
-              jujutsu
-              neovim-unwrapped
-              ruff # nixpkgs stable version is improperly configured by nixvim
-              # wezterm
-              ;
-          };
-      };
-
-      # Nix files formatter (run `nix fmt`)
-      formatter = forEachSupportedSystem ({ pkgs, ... }: pkgs.nixfmt-rfc-style);
-
-      # Example vm configuration
-      nixosConfigurations.vm =
-        let
-          system = "x86_64-linux";
-          config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [ "steam-original" ];
-          pkgs = import nixpkgs { inherit system overlays config; };
-        in
-        lib.nixosSystem {
-          inherit system pkgs;
-          modules = [
-            self.nixosModules.vm # import vm module
-            {
-              time.timeZone = "Europe/Berlin";
-              i18n.defaultLocale = "en_US.UTF-8";
-              users.users.jdoe = {
-                password = "example";
-                isNormalUser = true;
-                extraGroups = [
-                  "wheel"
-                  "video"
-                  "networkmanager"
-                ];
-              };
-              home-manager.users.jdoe = {
-                home = {
-                  username = "jdoe";
-                  homeDirectory = "/home/jdoe";
-                };
-                jhome = {
-                  enable = true;
-                  gui.enable = true;
-                  dev.rust.enable = true;
-                };
-              };
-              nix.registry.nixpkgs.flake = nixpkgs;
-              jconfig = {
-                enable = true;
-                gui.enable = true;
-              };
-            }
-          ];
-        };
-
-      nixosModules =
-        let
-          nvim-config.imports = [
-            nixvim.homeManagerModules.nixvim
-            ./nvim
-          ];
-          homeManagerModuleSandalone = import ./home { inherit nvim-config stylix; };
-          homeManagerModuleNixOS = import ./home { inherit nvim-config; };
-          nixosModule = {
-            imports = [
-              (import ./system { inherit stylix; })
-              home-manager.nixosModules.home-manager
-            ] ++ nixpkgs.lib.optional (lix-module != null) lix-module.nixosModules.default;
-            home-manager = {
-              useGlobalPkgs = true;
-              useUserPackages = true;
-              sharedModules = [ homeManagerModuleNixOS ];
-            };
-            # Pin nixpkgs
-            nix.registry.nixpkgs.flake = nixpkgs;
-          };
-
-          machines = [ "vm" ];
-          mkMachine = hostname: {
-            imports = [
-              nixosModule
-              (import (./machines + "/${hostname}"))
-            ];
-            home-manager.sharedModules = [ { jhome.hostName = hostname; } ];
-          };
-          machineModules = lib.genAttrs machines mkMachine;
-        in
-        {
-          default = nixosModule;
-          inherit nixosModule homeManagerModuleNixOS homeManagerModuleSandalone;
-        }
-        // machineModules;
-
-      devShells = forEachSupportedSystem (
-        { pkgs, system }:
-        {
-          default = pkgs.mkShellNoCC {
-            buildInputs = [
-              pkgs.just
-              self.packages.${system}.nvim
-            ];
-            QEMU_OPTS_WL = "--enable-kvm -smp 4 -device virtio-gpu-rutabaga,gfxstream-vulkan=on,cross-domain=on,hostmem=2G,wsi=headless";
-          };
-        }
-      );
     };
 }