Fix dependency issues in compatibility tests (#1951)

* update reqs

* pin scanpy

* merge in fix for race conditions

server/requirements-dev.txt

@@ -6,6 +6,5 @@ parameterized>=0.7.0
 psycopg2-binary>=2.8.5
 pytest>=3.6.3
 python-jose>=3.2.0
-scanpy>=1.4.6
 twine>=1.12.1
 -r requirements.txt

server/requirements-prepare.txt

@@ -1,3 +1,2 @@
-scanpy>=1.3.7
 python-igraph
 louvain>=0.6

server/requirements.txt

@@ -13,12 +13,13 @@ flatten-dict>=0.2.0
 fsspec>=0.4.4,<0.8.0
 gunicorn>=20.0.4
 numba>=0.49.1
-numpy>=1.16.0
+numpy>=1.15.0
 packaging>=20.0
-pandas>=0.24.2
+pandas>=1.0,!=1.1  # pandas 1.1 breaks tests, https://github.com/pandas-dev/pandas/issues/35446
 PyYAML>=5.3
-scipy>=1.3.0
+scipy>=1.0
 requests>=2.22.0
 tiledb>=0.5.9,>=0.6.2
 s3fs==0.4.2
+scanpy==1.4.6 # Until we move to anndata 0.7.4 scanpy needs to be pinned here
 sqlalchemy>=1.3.18

server/test/unit/auth/test_oauth.py

@@ -62,7 +62,6 @@ def jwks():
     data = dict(alg="RS256", kty="RSA", use="sig", kid="fake_kid",)
     return make_response(jsonify(dict(keys=[data])))
 
-
 # The port that the mock oauth server will listen on
 PORT = random.randint(10000, 12000)