Merge pull request #960 from SciML/python_tests

Fix Python tests

Author: ChrisRackauckas

test/python/Project.toml

@@ -1,10 +1,12 @@
 [deps]
+CondaPkg = "992eb4ea-22a4-4c89-a5bb-47a3300528ab"
 DifferentialEquations = "0c46a032-eb83-5123-abaf-570d42b7fbaa"
 OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
 PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
 SciMLBase = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
 
 [compat]
+CondaPkg = "0.2.26"
 DifferentialEquations = "7.11"
 OrdinaryDiffEq = "6.33"
 PythonCall = "0.9.14"

test/python/pythoncall.jl

@@ -1,12 +1,6 @@
-using DifferentialEquations, PythonCall
-
-pyexec(
-    """ # This is a mess because normal site-packages is not writeable in CI
-import subprocess, sys, site
-subprocess.run([sys.executable, '-m', 'pip', 'install', '--user', 'julia'])
-subprocess.run([sys.executable, '-m', 'pip', 'install', '--user', 'diffeqpy'])
-sys.path.append(site.getusersitepackages())
-""", @__MODULE__)
+using DifferentialEquations, PythonCall, CondaPkg
+
+CondaPkg.add_pip("diffeqpy")
 
 @testset "Use of DifferentialEquations through PythonCall with user code written in Python" begin
     pyexec("""