Use stripped down version of Talon.

requirements/emailmirror.txt

@@ -1,12 +1,5 @@
-talon==1.2.10
+git+https://github.com/umairwaheed/talon.git@strip-talon --install-option="--no-ml"
 cchardet==1.0.0
 cssselect==0.9.2
 lxml==3.6.0
 regex==2016.6.19
-
-# Currently, Scikit-Learn and Numpy cannot be installed with pip in one
-# install pass. See https://github.com/scikit-learn/scikit-learn/issues/4164
-# for further details.
--r numpy.txt
-
-scikit-learn==0.16.1

requirements/numpy.txt

@@ -1,5 +0,0 @@
-# Currently, Scikit-Learn and Numpy cannot be installed with pip in one
-# install pass. See https://github.com/scikit-learn/scikit-learn/issues/4164
-# for further details.
-numpy==1.11.0
-scipy==0.17.1

scripts/lib/setup_venv.py

@@ -69,12 +69,5 @@ def do_setup_virtualenv(venv_path, requirements_file, virtualenv_args):
     exec(open(activate_this).read(), {}, dict(__file__=activate_this)) # type: ignore # https://github.com/python/mypy/issues/1577
 
     run(["pip", "install", "--upgrade", "pip", "wheel"])
-    # Currently, Scikit-Learn and Numpy cannot be installed with pip in one
-    # install pass. See https://github.com/scikit-learn/scikit-learn/issues/4164
-    # for further details.
-    if 'dev.txt' in requirements_file or 'prod.txt' in requirements_file:
-        numpy = os.path.join(ZULIP_PATH, 'requirements', 'numpy.txt')
-        run(["pip", "install", "--no-deps", "--requirement", numpy])
-
     run(["pip", "install", "--no-deps", "--requirement", requirements_file])
     run(["sudo", "chmod", "-R", "a+rX", venv_path])