Split flake.nix into separate flake-parts modules

flake-modules/dev-shell.nix

@@ -0,0 +1,25 @@
+{ inputs, ... }:
+
+{
+  imports = [ inputs.devshell.flakeModule ];
+
+  perSystem.devshells.default =
+    { pkgs, ... }:
+    {
+      packages = with pkgs; [
+        nodePackages.browser-sync
+
+        (php83.buildEnv {
+          extraConfig = ''
+            error_reporting = E_ALL & ~E_DEPRECATED & ~E_USER_DEPRECATED
+          '';
+        })
+
+        php83Packages.composer
+        tailwindcss
+
+        (import ../drafts.nix { inherit pkgs; })
+        (import ../new-draft.nix { inherit pkgs; })
+      ];
+    };
+}

flake-modules/systems.nix

@@ -0,0 +1,3 @@
+{
+  systems = [ "x86_64-linux" ];
+}

flake.lock

@@ -1,23 +1,94 @@
 {
   "nodes": {
-    "nixpkgs": {
+    "devshell": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
       "locked": {
-        "lastModified": 1742422364,
+        "lastModified": 1741473158,
-        "narHash": "sha256-mNqIplmEohk5jRkqYqG19GA8MbQ/D4gQSK0Mu4LvfRQ=",
+        "narHash": "sha256-kWNaq6wQUbUMlPgw8Y+9/9wP0F8SHkjy24/mN3UAppg=",
-        "owner": "nixos",
+        "owner": "numtide",
-        "repo": "nixpkgs",
+        "repo": "devshell",
-        "rev": "a84ebe20c6bc2ecbcfb000a50776219f48d134cc",
+        "rev": "7c9e793ebe66bcba8292989a68c0419b737a22a0",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
+        "owner": "numtide",
+        "repo": "devshell",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1754487366,
+        "narHash": "sha256-pHYj8gUBapuUzKV/kN/tR3Zvqc7o6gdFB9XKXIp1SQ8=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "af66ad14b28a127c5c0f3bbb298218fc63528a18",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "import-tree": {
+      "locked": {
+        "lastModified": 1752730890,
+        "narHash": "sha256-GES8fapSLGz36MMPRVNkSUWXUTtqvGQNXHjRmRLfJUY=",
+        "owner": "vic",
+        "repo": "import-tree",
+        "rev": "6ebb8cb87987b20264c09296166543fd3761d274",
+        "type": "github"
+      },
+      "original": {
+        "owner": "vic",
+        "repo": "import-tree",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1755615617,
+        "narHash": "sha256-HMwfAJBdrr8wXAkbGhtcby1zGFvs+StOp19xNsbqdOg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "20075955deac2583bb12f07151c2df830ef346b4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
         "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1753579242,
+        "narHash": "sha256-zvaMGVn14/Zz8hnp4VWT9xVnhc8vuL3TStRqwk22biA=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "0f36c44e01a6129be94e3ade315a5883f0228a6e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
+        "devshell": "devshell",
+        "flake-parts": "flake-parts",
+        "import-tree": "import-tree",
         "nixpkgs": "nixpkgs"
       }
     }

flake.nix

@@ -1,31 +1,20 @@
 {
-  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  inputs = {
+    devshell.inputs.nixpkgs.follows = "nixpkgs";
+    devshell.url = "github:numtide/devshell";
+
+    flake-parts.url = "github:hercules-ci/flake-parts";
+
+    import-tree.url = "github:vic/import-tree";
+
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
 
   outputs =
-    { nixpkgs, ... }:
+    inputs:
-    let
+    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
-      system = "x86_64-linux";
+      imports = [
-      pkgs = import nixpkgs { inherit system; };
+        (inputs.import-tree ./flake-modules)
-    in
+      ];
-    {
-      devShells.${system}.default = pkgs.mkShell {
-        buildInputs = with pkgs; [
-          nodePackages.browser-sync
-
-          (php83.buildEnv {
-            extraConfig = ''
-              error_reporting = E_ALL & ~E_DEPRECATED & ~E_USER_DEPRECATED
-            '';
-          })
-
-          php83Packages.composer
-          tailwindcss
-
-          (import ./drafts.nix { inherit pkgs; })
-          (import ./new-draft.nix { inherit pkgs; })
-        ];
-      };
-
-      formatter.${system} = pkgs.nixfmt-rfc-style;
     };
 }