BLD: pin numpy to particular variant that is built for all our deps (#17619)

jreback · web-flow · commit 6930f27e78b2 · 2017-09-21T16:19:48.000-04:00
closes #17617
diff --git a/ci/requirements-3.6.build b/ci/requirements-3.6.build
@@ -2,5 +2,7 @@ python=3.6*
 python-dateutil
 pytz
 nomkl
-numpy
 cython
+
+# pin numpy that is built for all our deps
+numpy=1.13.1=py36_blas_openblas_201
