python3Packages.ipycanvas: cleanup

pkgs/development/python-modules/ipycanvas/default.nix

@@ -1,38 +1,44 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
+
+  # build-system
   hatch,
   hatch-build-scripts,
   hatch-nodejs-version,
+  hatchling,
+  jupyterlab,
+
+  # dependencies
   ipywidgets,
   numpy,
   pillow,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "ipycanvas";
   version = "0.14.3";
   pyproject = true;
 
-  src = fetchPypi {
-    inherit pname version;
-    hash = "sha256-xqU6Iu6/TWEbFouPRDQUWIPyenV1UJvZmkv8SMU4Wjk=";
+  src = fetchFromGitHub {
+    owner = "jupyter-widgets-contrib";
+    repo = "ipycanvas";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-VvNCe3+zK3qSuYErO4H2UlfAClvfDmisExWHx48cjUo=";
   };
 
-  # We relax dependencies here instead of pulling in a patch because upstream
-  # has released a new version using hatch-jupyter-builder, but it is not yet
-  # trivial to upgrade to that.
-  #
+  # _version.py is supposed to be generated by a script
   postPatch = ''
-    substituteInPlace pyproject.toml \
-      --replace-fail '"jupyterlab>=3,<5",' "" \
+    echo '__version__ = "{${finalAttrs.version}}"' > ipycanvas/_version.py
   '';
 
   build-system = [
     hatch
     hatch-build-scripts
     hatch-nodejs-version
+    hatchling
+    jupyterlab
   ];
 
   env.HATCH_BUILD_NO_HOOKS = true;
@@ -49,8 +55,8 @@ buildPythonPackage rec {
   meta = {
     description = "Expose the browser's Canvas API to IPython";
     homepage = "https://ipycanvas.readthedocs.io";
-    changelog = "https://github.com/jupyter-widgets-contrib/ipycanvas/releases/tag/${version}";
+    changelog = "https://github.com/jupyter-widgets-contrib/ipycanvas/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.bsd3;
     maintainers = with lib.maintainers; [ bcdarwin ];
   };
-}
+})