Switch to hatch backend

hatch_build.py

@@ -0,0 +1,34 @@
+"""Custom build script for hatch backend"""
+import glob
+import os
+import subprocess
+
+from hatchling.builders.hooks.plugin.interface import BuildHookInterface
+
+
+class CustomHook(BuildHookInterface):
+    def initialize(self, version, build_data):
+        cmd = "build:prod" if version == "stable" else "build"
+        osp = os.path
+        here = osp.abspath(osp.dirname(__file__))
+        lab_path = osp.join(here, 'ipyparallel', 'labextension')
+
+        if os.environ.get("IPP_DISABLE_JS") == "1":
+            print("Skipping js installation")
+            return
+
+        # this tells us if labextension is built at all, not if it's up-to-date
+        labextension_built = glob.glob(osp.join(lab_path, "*"))
+        needs_js = True
+        if not osp.isdir(osp.join(here, ".git")):
+            print("Installing from a dist, not a repo")
+            # not in a repo, probably installing from sdist
+            # could be git-archive, though!
+            # skip rebuilding js if it's already present
+            if labextension_built:
+                print(f"Not regenerating labextension in {lab_path}")
+                needs_js = False
+
+        if needs_js:
+            subprocess.check_call(['jlpm'], cwd=here)
+            subprocess.check_call(['jlpm', 'run', cmd], cwd=here)

pyproject.toml

@@ -1,13 +1,13 @@
 [build-system]
 requires = [
   "jupyterlab>=3.0.0,==3.*",
-  "flit_core >=3.2,<4"
+  "hatchling"
 ]
-build-backend = "buildapi"
-backend-path = ["."]
+build-backend = "hatchling.build"
 
 [project]
 name = "ipyparallel"
+version = "8.4.0.dev"
 authors = [{name = "IPython Development Team", email = "ipython-dev@scipy.org"}]
 license = {file = "COPYING.md"}
 readme = "README.md"
@@ -48,7 +48,6 @@ dependencies = [
     "python-dateutil>=2.1",
     "tqdm",
 ]
-dynamic = ["version"]
 
 [project.entry-points."ipyparallel.controller_launchers"]
 batch = "ipyparallel.cluster.launcher:BatchControllerLauncher"
@@ -95,20 +94,22 @@ ipcluster = "ipyparallel.cluster.app:main"
 ipcontroller = "ipyparallel.controller.app:main"
 ipengine = "ipyparallel.engine.app:main"
 
-[tool.flit.sdist]
-include = [
-  "benchmarks/",
-  "docs/",
-  "*.json",
-  "yarn.lock",
-  "jupyter-data/",
-  "lab/",
-  "buildapi.py",
+# Used to call hatch_build.py
+[tool.hatch.build.targets.wheel.hooks.custom]
+[tool.hatch.build.targets.sdist.hooks.custom]
+
+[tool.hatch.build]
+artifacts = [
+  "ipyparallel/**/*.*"
+]
+exclude = [
+  "lab/lib"
 ]
-exclude = ["lab/lib/"]
 
-[tool.flit.external-data]
-directory = "jupyter-data"
+[tool.hatch.build.targets.wheel.shared-data]
+"jupyter-config" = "etc/jupyter"
+"ipyparallel/nbextension/static" = "share/jupyter/nbextensions/ipyparallel"
+"ipyparallel/labextension" = "share/jupyter/labextensions/ipyparallel-labextension"
 
 [tool.black]
 skip-string-normalization = true
@@ -139,7 +140,6 @@ filterwarnings = [
   "ignore:the imp module is:DeprecationWarning",
 ]
 
-
 [tool.tbump]
 # Uncomment this if your project is hosted on GitHub:
 github_url = "https://github.com/jupyterhub/jupyterhub"
@@ -172,6 +172,10 @@ tag_template = "{new_version}"
 src = "ipyparallel/_version.py"
 search = '__version__ = "{current_version}"'
 
+[[tool.tbump.file]]
+src = "pyproject.toml"
+search = '"version" = "{current_version}"'
+
 [[tool.tbump.file]]
 src = "package.json"
 search = '"version": "{current_version}"'