Merge pull request #15294 from rardiol/sympy

sympy and mathics update

pkgs/development/python-modules/mathics/disable_console_tests.patch

@@ -1,21 +0,0 @@
-These tests require that Mathics already be installed to work,
-which is not true when nix runs them.
-
---- a/test/test_console.py	2015-09-07 21:41:08.530501979 -0700
-+++ b/test/test_console.py	2015-09-07 21:42:44.082176084 -0700
-@@ -13,6 +13,7 @@
-         os.environ["TERM"] = "dumb"
-         self.console = pexpect.spawn('python2 mathics/main.py --color NOCOLOR')
- 
-+    @unittest.expectedFailure
-     def testLaunch(self):
-         cons = self.console
- 
-@@ -41,6 +42,7 @@
-             'Quit by pressing CONTROL-D\r\n'
-             '\r\n')
- 
-+    @unittest.expectedFailure
-     def testPrompt(self):
-         cons = self.console
-         cons.expect('Quit by pressing CONTROL-D\r\n\r\n')