Fixed nixpkgs by generating a function by system.

flake.lock

@@ -0,0 +1,61 @@
+{
+  "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": 1682692304,
+        "narHash": "sha256-9/lyXN2BpHw+1xE+D2ySBSLMCHWqiWu5tPHBMRDib8M=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "937a9d1ee7b1351d8c55fff6611a8edf6e7c1c37",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "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",
+  "version": 7
+}

flake.nix

@@ -3,33 +3,39 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs }: {
+  outputs = { self, nixpkgs, flake-utils }:
-    writePythonApplication = {name, contentFile}: let
+    flake-utils.lib.eachDefaultSystem (system:
-          wrappedScript = pkgs.writeText "wrappedScript" (builtins.readFile contentFile);
+      let
-          in
+        pkgs = import nixpkgs { inherit system;};
-          pkgs.writeShellApplication {
+      in
-          name = name;
+    {
-          runtimeInputs = [
+      writePythonApplication = {name, contentFile}: let
-              wrappedScript
+            wrappedScript = pkgs.writeText "wrappedScript" (builtins.readFile contentFile);
-              pkgs.python311];
+            in
-          text = ''
+            pkgs.writeShellApplication {
-              exec ${pkgs.python38}/bin/python ${wrappedScript} "$@"
+            name = name;
-          '';
+            runtimeInputs = [
-          };
+                wrappedScript
+                pkgs.python311];
+            text = ''
+                exec ${pkgs.python38}/bin/python ${wrappedScript} "$@"
+            '';
+            };
 
-      writeBabashkaApplication = {name, contentFile}: let
+        writeBabashkaApplication = {name, contentFile}: let
-          wrappedScript = pkgs.writeText "wrappedScript" (builtins.readFile contentFile);
+            wrappedScript = pkgs.writeText "wrappedScript" (builtins.readFile contentFile);
-          in
+            in
-          pkgs.writeShellApplication {
+            pkgs.writeShellApplication {
-          name = name;
+            name = name;
-          runtimeInputs = [
+            runtimeInputs = [
-              wrappedScript
+                wrappedScript
-              pkgs.babashka];
+                pkgs.babashka];
-          text = ''
+            text = ''
-              exec ${pkgs.babashka}/bin/bb ${wrappedScript} "$@"
+                exec ${pkgs.babashka}/bin/bb ${wrappedScript} "$@"
-          '';
+            '';
-          };
+            };
-  };
+    });
 }