added autobuild of labextension when installing with pip directly in repo

- also will do autobuild for various other setup.py commands (eg `python setup.py sdist bdist_wheel`)
- no autobuild for dev install (eg `pip install -e .`)

Author: telamonian

.travis.yml

@@ -9,14 +9,12 @@ before_install:
   - nvm install 10
 install: pip install pytest "jupyterlab~=1.1"
 script:
-  # Build the labextension and bundle it
-  - jlpm build:labextension
   # Build the sdist (identical to what will be uploaded to eg pypi on release)
   - python setup.py sdist
   # Install the extension from the sdist ensuring the cache is unused
   - pip install jupyterlab_git[test] --pre --no-index --find-links=dist --no-deps --no-cache-dir -v
   # Install the extension dependencies based on the current setup.py
-  - pip install .[test]
+  - pip install jupyterlab_git[test]
   - jupyter labextension list
   - jupyter lab build
   - pytest jupyterlab_git -r ap

README.md

@@ -24,9 +24,9 @@ pip install --upgrade jupyterlab-git
 jupyter lab build
 ```
 
-### Troubleshoot
+### Troubleshooting
 
-- When you run JupyterLab, if you can see the Git sidepanel UI but you cannot get it to work, you may need to explicitly enable the serverextension. Do:
+- When you run JupyterLab, if you can see the Git sidepanel UI but you cannot get it to work, you may need to explicitly enable the serverextension by running:
 
 ```bash
 jupyter serverextension enable --py jupyterlab_git

package.json

@@ -13,10 +13,9 @@
   ],
   "scripts": {
     "build": "jlpm install && tsc",
-    "build:clean": "jlpm install && jlpm clean && tsc",
-    "build:labextension": "jlpm build:clean && jlpm clean:labextension && mkdirp jupyterlab_git/labextension && cd jupyterlab_git/labextension && npm pack ../..",
+    "build:labextension": "jlpm build && jlpm clean:labextension && mkdirp jupyterlab_git/labextension && cd jupyterlab_git/labextension && npm pack ../..",
     "clean": "rimraf lib && rimraf tsconfig.tsbuildinfo",
-    "clean:more": "jlpm clean && rimraf build && rimraf dist && rimraf package && rimraf *.tgz",
+    "clean:more": "jlpm clean && rimraf build && rimraf dist",
     "clean:labextension": "rimraf jupyterlab_git/labextension",
     "clean:slate": "jlpm clean:more && jlpm clean:labextension && rimraf node_modules",
     "watch": "tsc -w",

setup.py

@@ -1,11 +1,12 @@
 """
 Setup Module to setup Python Handlers (Git Handlers) for the Git Plugin.
 """
-from os.path import join as pjoin
+from pathlib import Path
+from subprocess import CalledProcessError
 
 from setupbase import (
-    create_cmdclass, ensure_python, get_version,
-    HERE
+    command_for_func, create_cmdclass, ensure_python,
+    get_version, HERE, run
 )
 
 import setuptools
@@ -17,17 +18,27 @@
 ensure_python('>=3.5')
 
 # Get our version
-version = get_version(pjoin(name, '_version.py'))
+version = get_version(str(Path(name) / '_version.py'))
 
-lab_path = pjoin(HERE, name, 'labextension')
+lab_path = Path(HERE) / name / 'labextension'
 
 data_files_spec = [
-    ('share/jupyter/lab/extensions', lab_path, '*.tgz'),
+    ('share/jupyter/lab/extensions', str(lab_path), '*.tgz'),
     ('etc/jupyter/jupyter_notebook_config.d',
      'jupyter-config/jupyter_notebook_config.d', 'jupyterlab_git.json'),
 ]
 
-cmdclass = create_cmdclass(data_files_spec=data_files_spec)
+def runPackLabextension():
+    if Path('package.json').is_file():
+        try:
+            run(['jlpm', 'build:labextension'])
+        except CalledProcessError:
+            pass
+pack_labext = command_for_func(runPackLabextension)
+
+cmdclass = create_cmdclass('pack_labext', data_files_spec=data_files_spec)
+cmdclass['pack_labext'] = pack_labext
+cmdclass.pop('develop')
 
 with open("README.md", "r") as fh:
     long_description = fh.read()