diff --git a/flake.lock b/flake.lock
index edec07a..1c09934 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,23 +1,5 @@
 {
   "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1681303793,
@@ -36,24 +18,8 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 514c2e0..163117b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,47 +2,75 @@
   description = "A very basic python flake template, providing a devshell.";
 
   inputs = {
-    nixpkgs.url = github:nixos/nixpkgs/nixos-unstable;
-    flake-utils.url = github:numtide/flake-utils;
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
-    flake-utils.lib.eachDefaultSystem (
-      system:
-      let
-        pkgs = nixpkgs.legacyPackages.${system};
-        pyPkgs = pkgs.python310Packages;
-        customPython = pkgs.python39.buildEnv.override {
-          extraLibs = with pyPkgs; [
-            ipython
-            setuptools
-            requests
-          ];
-        };
-        packageName = with builtins; head (match "^.*name[[:space:]]*=[[:space:]][\"]([^[:space:]]*)[\"][,].*$" (readFile ./setup.py));
-        version = with builtins; head (match "^.*version[[:space:]]*=[[:space:]][\"]([^[:space:]]*)[\"][,].*$" (readFile ./setup.py));
+  outputs = { self, nixpkgs }:
+    let
+      supportedSystems =
+        [ "aarch64-linux" "x86_64-linux" "aarch64-darwin" "x86_64-darwin" ];
+
+      forAllSystems =
+        nixpkgs.lib.genAttrs supportedSystems;
+
+      nixpkgsFor =
+        forAllSystems (system:
+          import nixpkgs {
+            inherit system;
+          }
+        );
+
+      pyPkgs = system:
+        nixpkgsFor.${system}.python310Packages;
+
+      packageName = with builtins;
+        head (match "^.*name[[:space:]]*=[[:space:]][\"]([^[:space:]]*)[\"][,].*$" (readFile ./setup.py));
+
+      version = with builtins;
+        head (match "^.*version[[:space:]]*=[[:space:]][\"]([^[:space:]]*)[\"][,].*$" (readFile ./setup.py));
+
       in
       {
+        packages =
+          forAllSystems (system:
+            let
+              pkgs =
+                nixpkgsFor.${system};
+
+            in
+              {
+                default = (pyPkgs system).buildPythonPackage {
+                  pname = packageName;
+                  inherit version;
+                  src = ./.;
+                  doCheck = false;
+
+                  propagatedBuildInputs = [ (pyPkgs system).requests ];
+                  meta = {
+                    homepage = "https://github.com/jeslie0/npm-lockfile-fix";
+                    description = "";
+                    license = pkgs.lib.licenses.mit;
+                  };
+                };
+              }
+          );
+
+        devShells =
+          forAllSystems (system:
+            let
+              pkgs =
+                nixpkgsFor.${system};
+            in
+              {
+                default =
+                  pkgs.mkShell {
+                    packages = with pkgs;
+                      [ python310Packages.python-lsp-server ];
 
-        packages.default = pyPkgs.buildPythonPackage {
-          pname = packageName;
-          inherit version;
-          src = ./.;
-          doCheck = false;
-
-          propagatedBuildInputs = [ pyPkgs.requests ];
-          meta = {
-            homepage = "https://github.com/jeslie0/npm-lockfile-fix";
-            description = "";
-            license = pkgs.lib.licenses.mit;
-          };
-        };
-
-        devShell = pkgs.mkShell {
-          packages = with pkgs;
-            [ python310Packages.python-lsp-server ];
-          inputsFrom = [ self.packages.${system}.default ];
-        };
-      }
-    );
+                    inputsFrom =
+                      [ self.packages.${system}.default ];
+                  };
+              }
+          );
+      };
 }