nix-update: init at 0.1

pkgs/tools/package-management/nix-update/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonApplication
+, fetchFromGitHub
+, nix
+, nix-prefetch
+}:
+
+buildPythonApplication rec {
+  pname = "nix-update";
+  version = "0.1";
+
+  src = fetchFromGitHub {
+    owner = "Mic92";
+    repo = pname;
+    rev = version;
+    sha256 = "0mw31n7kqfr7fskkxp58b0wprxj1pj6n1zs6ymvvl548gs5rgn2s";
+  };
+
+  makeWrapperArgs = [
+    "--prefix" "PATH" ":" (lib.makeBinPath [ nix nix-prefetch ])
+  ];
+
+  checkPhase = ''
+    $out/bin/nix-update --help
+  '';
+
+  meta = with lib; {
+    description = "Swiss-knife for updating nix packages";
+    inherit (src.meta) homepage;
+    license = licenses.mit;
+    maintainers = with maintainers; [ mic92 zowoq ];
+    platforms = platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -25754,6 +25754,8 @@ in
 
   nix-query-tree-viewer = callPackage ../tools/nix/nix-query-tree-viewer { };
 
+  nix-update = python3Packages.callPackage ../tools/package-management/nix-update { };
+
   nix-update-source = callPackage ../tools/package-management/nix-update-source {};
 
   nix-script = callPackage ../tools/nix/nix-script {};