Skip python-jl test in Windows

Author: tkf

julia/python_jl.py

@@ -7,6 +7,10 @@
 Deiban-based distribution such as Ubuntu and Python executable installed by
 Conda in Linux.
 
+In Windows and macOS, this CLI is not necessary because those platforms do
+not have the pre-compilation issue mentioned above.  In fact, this CLI is
+known to not work on Windows at the moment.
+
 Although this script has -i option and it can do a basic REPL, contrl-c may
 crash the whole process.  Consider using IPython >= 7 which can be launched
 by::

test/test_python_jl.py

@@ -6,6 +6,8 @@
 from julia.core import which
 from julia.python_jl import parse_pyjl_args
 
+is_windows = os.name == "nt"
+
 PYJULIA_TEST_REBUILD = os.environ.get("PYJULIA_TEST_REBUILD", "no") == "yes"
 JULIA = os.environ.get("JULIA_EXE")
 
@@ -50,6 +52,9 @@ def test_cli_quick_pass_no_julia(cli_args):
     )
 
 
+@pytest.mark.skipif(
+    is_windows,
+    reason="python-jl is not supported in Windows")
 @pytest.mark.skipif(
     not PYJULIA_TEST_REBUILD,
     reason="PYJULIA_TEST_REBUILD=yes is not set")