.github/workflows/tests-future.yml: Windows adjustments

tox.ini

@@ -200,9 +200,11 @@ deps =
     git+https://github.com/scrapy/parsel.git#egg=parsel
     git+https://github.com/scrapy/protego.git#egg=Protego
     # https://github.com/pypa/pip/issues/2523#issuecomment-399123977
-    bzr+lp:~mcfletch/pydispatcher/working#egg=PyDispatcher; sys_platform != "win32"
-    PyDispatcher; sys_platform == "win32"
-    git+https://github.com/pyca/pyopenssl.git#egg=pyOpenSSL
+    bzr+lp:~mcfletch/pydispatcher/working#egg=PyDispatcher; platform_system != "Windows"
+    PyDispatcher; platform_system == "Windows"
+    # TODO: Build from sources on Windows
+    git+https://github.com/pyca/pyopenssl.git#egg=pyOpenSSL; platform_system != "Windows"
+    pyOpenSSL; platform_system == "Windows"
     git+https://github.com/scrapy/queuelib.git#egg=queuelib
     git+https://github.com/pyca/service-identity.git#egg=service-identity
     git+https://github.com/twisted/twisted.git#egg=Twisted[http2]
@@ -218,10 +220,10 @@ deps =
     git+https://github.com/pytest-dev/pytest.git#egg=pytest
     git+https://github.com/pytest-dev/pytest-cov.git#egg=pytest-cov
     git+https://github.com/pytest-dev/pytest-xdist.git#egg=pytest-xdist
-    git+https://github.com/mhammond/pywin32.git#egg=pywin32; sys_platform == "win32"
+    git+https://github.com/mhammond/pywin32.git#egg=pywin32; platform_system == "Windows"
     git+https://github.com/simplistix/sybil.git#egg=sybil
     git+https://github.com/Simplistix/testfixtures.git#egg=testfixtures
-    git+https://github.com/MagicStack/uvloop.git#egg=uvloop
+    git+https://github.com/MagicStack/uvloop.git#egg=uvloop; platform_system != "Windows"
 
     # Extras
     git+https://github.com/boto/botocore.git#egg=botocore