Mark venv test broken in Windows

Author: tkf

test/test_venv.jl

@@ -60,8 +60,18 @@ end
             env = copy(ENV)
             env["PYCALL_JL_RUNTIME_PYTHON"] = newpython
             jlcmd = setenv(`$(Base.julia_cmd()) -e $code`, env)
-            output = read(jlcmd, String)
-            @test newpython == output
+            if Compat.Sys.iswindows()
+                # Marking the test broken in Windows.  It seems that
+                # venv copies .dll on Windows and libpython check in
+                # PyCall.__init__ detects that.
+                @test_broken begin
+                    output = read(jlcmd, String)
+                    newpython == output
+                end
+            else
+                output = read(jlcmd, String)
+                @test newpython == output
+            end
         end
     end
 end