python310Packages.lazy-loader: init at 0.1

Packaged up as a dependency for librosa.

pkgs/development/python-modules/lazy-loader/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, flit-core
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "lazy-loader";
+  version = "0.1";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "scientific-python";
+    repo = "lazy_loader";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-zMmDvAyCaTSMOXgCiLQ4Z/9Ro3k0qJxJPLLoNmK/dmE=";
+  };
+
+  nativeBuildInputs = [
+    flit-core
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    description = "Populate library namespace without incurring immediate import costs";
+    homepage = "https://github.com/scientific-python/lazy_loader";
+    changelog = "https://github.com/scientific-python/lazy_loader/releases/tag/v${version}";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ hexa ];
+  };
+}

pkgs/top-level/python-packages.nix

@@ -5283,6 +5283,8 @@ self: super: with self; {
 
   lazy_import = callPackage ../development/python-modules/lazy_import { };
 
+  lazy-loader = callPackage ../development/python-modules/lazy-loader { };
+
   lazy-object-proxy = callPackage ../development/python-modules/lazy-object-proxy { };
 
   lc7001 = callPackage ../development/python-modules/lc7001 { };