Merge pull request #823 from effigies/mnt/avoid_jinja2v3

MNT: Avoid jinja2 v3 until nbconvert handles breakages

Author: effigies

pyproject.toml

@@ -1,2 +1,2 @@
 [build-system]
-requires = ["setuptools >= 30.3.0", "wheel"]
+requires = ["setuptools >= 30.3.0, != 61.0.0", "wheel"]

setup.cfg

@@ -60,6 +60,8 @@ ci_tests =
     pytest-xdist
 tutorial =
     nbconvert
+    jinja2 <3  # Required until nbconvert handles all deprecations/removals
+    markupsafe <2.1  # Required until we can upgrade jinja2
     jupyter_client
     ipykernel
 dev =

setup.py

@@ -6,7 +6,7 @@
 # Give setuptools a hint to complain if it's too old a version
 # 30.3.0 allows us to put most metadata in setup.cfg
 # Should match pyproject.toml
-SETUP_REQUIRES = ['setuptools >= 30.3.0']
+SETUP_REQUIRES = ['setuptools >= 30.3.0, != 61.0.0']
 # This enables setuptools to install wheel on-the-fly
 SETUP_REQUIRES += ['wheel'] if 'bdist_wheel' in sys.argv else []
 

tools/ci/env.sh

@@ -1,4 +1,4 @@
-SETUP_REQUIRES="pip setuptools>=30.3.0 wheel"
+SETUP_REQUIRES="pip setuptools>=30.3.0,!=61.0.0 wheel"
 
 # Numpy and scipy upload nightly/weekly/intermittent wheels
 NIGHTLY_WHEELS="https://pypi.anaconda.org/scipy-wheels-nightly/simple"