flake: add 'flake-parts'

flake.lock

@@ -60,6 +60,27 @@
         "type": "github"
       }
     },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1677714448,
+        "narHash": "sha256-Hq8qLs8xFu28aDjytfxjdC96bZ6pds21Yy09mSC156I=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "dc531e3a9ce757041e1afaff8ee932725ca60002",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "ref": "main",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
     "futils": {
       "locked": {
         "lastModified": 1678901627,
@@ -185,6 +206,7 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
+        "flake-parts": "flake-parts",
         "futils": "futils",
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs",

flake.nix

@@ -11,6 +11,16 @@
       };
     };
 
+    flake-parts = {
+      type = "github";
+      owner = "hercules-ci";
+      repo = "flake-parts";
+      ref = "main";
+      inputs = {
+        nixpkgs-lib.follows = "nixpkgs";
+      };
+    };
+
     futils = {
       type = "github";
       owner = "numtide";
@@ -60,6 +70,7 @@
     inputs @
     { self
     , agenix
+    , flake-parts
     , futils
     , home-manager
     , nixpkgs