Remove duplication of the labextension

.gitignore

@@ -4,7 +4,6 @@ node_modules/
 *.egg-info/
 .ipynb_checkpoints
 *.tsbuildinfo
-jupyterlite_xeus_python/labextension
 
 # Created by https://www.gitignore.io/api/python
 # Edit at https://www.gitignore.io/?templates=python
@@ -119,3 +118,6 @@ python_data.data
 xpython_wasm.js
 xpython_wasm.wasm
 xeus_python.worker.js
+
+# Labextension
+share

MANIFEST.in

@@ -9,7 +9,7 @@ include yarn.lock
 include webpack.config.js
 recursive-include tests *.py
 
-graft jupyterlite_xeus_python/labextension
+graft share
 
 graft docs
 

jupyterlite_xeus_python/__init__.py

@@ -1,13 +1,19 @@
+import sys
 import json
 from pathlib import Path
 
 from ._version import __version__
 
 HERE = Path(__file__).parent.resolve()
 
-with (HERE / "labextension" / "package.json").open() as fid:
-    data = json.load(fid)
-
 
 def _jupyter_labextension_paths():
-    return [{"src": "labextension", "dest": data["name"]}]
+    prefix = sys.prefix
+    # For when in dev mode
+    if (HERE.parent / 'share' / 'jupyter' / 'labextensions' / '@jupyterlite' / 'xeus-python-kernel').parent.exists():
+        prefix = HERE.parent
+
+    return [{
+        'src': prefix / 'share' / 'jupyter' / 'labextensions' / '@jupyterlite' / 'xeus-python-kernel',
+        'dest': '@jupyterlite/xeus-python-kernel',
+    }]

jupyterlite_xeus_python/_version.py

@@ -7,19 +7,16 @@
 def _fetchVersion():
     HERE = Path(__file__).parent.resolve()
 
-    for settings in HERE.rglob("package.json"):
-        try:
-            with settings.open() as f:
-                version = json.load(f)["version"]
-                return (
-                    version.replace("-alpha.", "a")
-                    .replace("-beta.", "b")
-                    .replace("-rc.", "rc")
-                )
-        except FileNotFoundError:
-            pass
-
-    raise FileNotFoundError(f"Could not find package.json under dir {HERE!s}")
+    try:
+        with open(HERE / "package.json", "r") as f:
+            version = json.load(f)["version"]
+            return (
+                version.replace("-alpha.", "a")
+                .replace("-beta.", "b")
+                .replace("-rc.", "rc")
+            )
+    except FileNotFoundError:
+        pass
 
 
 __version__ = _fetchVersion()

package.json

@@ -82,7 +82,7 @@
   },
   "jupyterlab": {
     "extension": true,
-    "outputDir": "jupyterlite_xeus_python/labextension",
+    "outputDir": "share/jupyter/labextensions/@jupyterlite/xeus-python-kernel",
     "webpackConfig": "./webpack.config.js",
     "sharedPackages": {
       "@jupyterlite/kernel": {

pyproject.toml

@@ -3,8 +3,8 @@ requires = ["jupyter_packaging~=0.10,<2", "jupyterlab~=3.1"]
 build-backend = "jupyter_packaging.build_api"
 
 [tool.jupyter-packaging.options]
-skip-if-exists = ["jupyterlite_xeus_python/labextension/static/style.js"]
-ensured-targets = ["jupyterlite_xeus_python/labextension/static/style.js", "jupyterlite_xeus_python/labextension/package.json"]
+skip-if-exists = ["share/jupyter/labextensions/@jupyterlite/xeus-python-kernel/static/style.js"]
+ensured-targets = ["share/jupyter/labextensions/@jupyterlite/xeus-python-kernel/static/style.js", "share/jupyter/labextensions/@jupyterlite/xeus-python-kernel/package.json"]
 
 [tool.jupyter-packaging.builder]
 factory = "jupyter_packaging.npm_builder"
@@ -14,4 +14,4 @@ build_cmd = "build:prod"
 npm = ["jlpm"]
 
 [tool.check-manifest]
-ignore = ["jupyterlite_xeus_python/labextension/**", "yarn.lock", ".*", "package-lock.json", "Dockerfile", "src/xeus_python.worker.js", "src/xpython_wasm.js", "src/xpython_wasm.wasm", "src/python_data.data", "src/python_data.js", "*.sh"]
+ignore = ["share/jupyter/labextensions/@jupyterlite/xeus-python-kernel/**", "yarn.lock", ".*", "package-lock.json", "Dockerfile", "src/xeus_python.worker.js", "src/xpython_wasm.js", "src/xpython_wasm.wasm", "src/python_data.data", "src/python_data.js", "*.sh"]

setup.py

@@ -12,15 +12,15 @@
 # The name of the project
 name = "jupyterlite-xeus-python"
 
-lab_path = (HERE / name.replace("-", "_") / "labextension")
+lab_path = (HERE / "share" / "jupyter" / "labextensions" / "@jupyterlite" / "xeus-python-kernel")
 
 # Representative files that should exist after a successful build
 ensured_targets = [
     str(lab_path / "package.json"),
     str(lab_path / "static/style.js")
 ]
 
-labext_name = "jupyterlite-xeus-python"
+labext_name = "@jupyterlite/xeus-python-kernel"
 
 data_files_spec = [
     ("share/jupyter/labextensions/%s" % labext_name, str(lab_path.relative_to(HERE)), "**"),