Fix package dependencies (#410)

* Fix package dependencies

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

dev-environment.yml

@@ -7,10 +7,10 @@ dependencies:
     - jupyter-packaging
     - jupyterlab=3
     - ipywidgets>=7.6
-    - flake8
     - pillow
     - numpy
     - matplotlib
+    - flake8
     - pytest
     - nbval
     - pip:

setup.py

@@ -57,7 +57,15 @@
     long_description=long_description,
     license='BSD License',
     include_package_data=True,
-    install_requires=['ipykernel>=4.7', 'ipywidgets>=7.6.0', 'matplotlib>=2.0.0'],
+    install_requires=[
+        'ipython<8',
+        'numpy',
+        'ipython_genutils',
+        'pillow',
+        'traitlets<6',
+        'ipywidgets>=7.6.0,<8',
+        'matplotlib>=2.0.0,<4',
+    ],
     packages=find_packages(),
     zip_safe=False,
     cmdclass=cmdclass,