diff --git a/flake.lock b/flake.lock
index 11be3bc9a7..9027ab2d8c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -102,7 +102,9 @@
     },
     "flake-utils": {
       "inputs": {
-        "systems": "systems"
+        "systems": [
+          "systems"
+        ]
       },
       "locked": {
         "lastModified": 1731533236,
@@ -667,7 +669,8 @@
         "nixpkgs": [
           "haskellNix",
           "nixpkgs-2405"
-        ]
+        ],
+        "systems": "systems"
       }
     },
     "stackage": {
@@ -687,18 +690,16 @@
       }
     },
     "systems": {
+      "flake": false,
       "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
+        "lastModified": 1,
+        "narHash": "sha256-b1F680f3MXFMDcYdNiqqnK/H/M4Mr1jzndTzkJbImr4=",
+        "path": "/nix/store/qmdq2iq0v94fkw0a3wqrhcb0vgc15y8l-source/nix/systems.nix",
+        "type": "path"
       },
       "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
+        "path": "/nix/store/qmdq2iq0v94fkw0a3wqrhcb0vgc15y8l-source/nix/systems.nix",
+        "type": "path"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index 494fabf317..afaf7f9848 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,22 +7,26 @@
   };
 
   inputs = {
+    flake-utils = {
+      inputs.systems.follows = "systems";
+      url = "github:numtide/flake-utils";
+    };
     haskellNix.url = "github:input-output-hk/haskell.nix";
     nixpkgs.follows = "haskellNix/nixpkgs-2405";
-    flake-utils.url = "github:numtide/flake-utils";
+    systems = {
+      flake = false;
+      url = "./nix/systems.nix";
+    };
   };
 
   outputs = {
-    self,
+    flake-utils,
     haskellNix,
     nixpkgs,
-    flake-utils,
+    self,
+    systems,
   }:
-    flake-utils.lib.eachSystem [
-      "x86_64-linux"
-      "x86_64-darwin"
-      "aarch64-darwin"
-    ]
+    flake-utils.lib.eachSystem (import systems)
     (system: let
       ## It’s much easier to read from a JSON file than to have JSON import from some other file, so we extract some
       ## configuration from the VS Code settings to avoid duplication.
diff --git a/nix/systems.nix b/nix/systems.nix
new file mode 100644
index 0000000000..71078aed37
--- /dev/null
+++ b/nix/systems.nix
@@ -0,0 +1,4 @@
+[ "aarch64-darwin"
+  "x86_64-darwin"
+  "x86_64-linux"
+]