Merging upstream version 4.67.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

environment.yml

@@ -20,8 +20,7 @@ dependencies:
 - pytest
 - pytest-cov
 - pytest-timeout
-- pytest-asyncio
-- nbval
+- pytest-asyncio>=0.24
 - coverage
 # extras
 - dask               # dask
@@ -35,12 +34,13 @@ dependencies:
 - rich               # rich
 - argopt             # `cd wiki && pymake`
 - twine              # `pymake check pypi`
-- build              # `python -m build`
+- python-build       # `python -m build`
 # `cd docs && pymake`
 - mkdocs-material
 - pygments
 - pymdown-extensions
 - pip:
+  - git+https://github.com/casperdcl/nbval.git@master#egg=nbval # tests (native)
   - py-make >=0.1.0                                          # `make/pymake`
   - mkdocs-minify-plugin                                     # `cd docs && pymake`
   - git+https://github.com/tqdm/jsmin@fix-pip#egg=jsmin      # `cd docs && pymake`