From ccb81519bffb183b3958d09098fe7ad2093e46f8 Mon Sep 17 00:00:00 2001
From: jbrockmendel <jbrockmendel@gmail.com>
Date: Tue, 15 Oct 2019 04:38:52 -0700
Subject: [PATCH] Backport PR #28730: CI: 3.8 build

---
 .travis.yml     | 13 +++++++++++--
 ci/build38.sh   | 25 +++++++++++++++++++++++++
 ci/setup_env.sh |  4 ++++
 3 files changed, 40 insertions(+), 2 deletions(-)
 create mode 100644 ci/build38.sh

diff --git a/.travis.yml b/.travis.yml
index 8335a6ee92bef..6465abb317c01 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,6 +31,12 @@ matrix:
       - python: 3.5
 
     include:
+    - dist: bionic
+      # 18.04
+      python: 3.8-dev
+      env:
+        - JOB="3.8-dev" PATTERN="(not slow and not network)"
+
     - dist: trusty
       env:
         - JOB="3.7" ENV_FILE="ci/deps/travis-37.yaml" PATTERN="(not slow and not network)"
@@ -72,6 +78,7 @@ before_install:
   # This overrides travis and tells it to look nowhere.
   - export BOTO_CONFIG=/dev/null
 
+
 install:
   - echo "install start"
   - ci/prep_cython_cache.sh
@@ -79,17 +86,19 @@ install:
   - ci/submit_cython_cache.sh
   - echo "install done"
 
+
 before_script:
   # display server (for clipboard functionality) needs to be started here,
   # does not work if done in install:setup_env.sh (GH-26103)
   - export DISPLAY=":99.0"
   - echo "sh -e /etc/init.d/xvfb start"
-  - sh -e /etc/init.d/xvfb start
+  - if [ "$JOB" != "3.8-dev" ]; then sh -e /etc/init.d/xvfb start; fi
   - sleep 3
 
 script:
   - echo "script start"
-  - source activate pandas-dev
+  - echo "$JOB"
+  - if [ "$JOB" != "3.8-dev" ]; then source activate pandas-dev; fi
   - ci/run_tests.sh
 
 after_script:
diff --git a/ci/build38.sh b/ci/build38.sh
new file mode 100644
index 0000000000000..5c798c17301e0
--- /dev/null
+++ b/ci/build38.sh
@@ -0,0 +1,25 @@
+#!/bin/bash -e
+# Special build for python3.8 until numpy puts its own wheels up
+
+sudo apt-get install build-essential gcc xvfb
+pip install --no-deps -U pip wheel setuptools
+pip install python-dateutil pytz cython pytest pytest-xdist hypothesis
+
+# Possible alternative for getting numpy:
+# pip install --pre -f https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com/ numpy
+git clone https://github.com/numpy/numpy
+cd numpy
+python setup.py build_ext --inplace
+python setup.py install
+cd ..
+rm -rf numpy
+
+python setup.py build_ext -inplace
+python -m pip install --no-build-isolation -e .
+
+python -c "import sys; print(sys.version_info)"
+python -c "import pandas as pd"
+python -c "import hypothesis"
+
+# TODO: Is there anything else in setup_env that we really want to do?
+# ci/setup_env.sh
diff --git a/ci/setup_env.sh b/ci/setup_env.sh
index 88742e0483c7e..02e48f6cb9af1 100755
--- a/ci/setup_env.sh
+++ b/ci/setup_env.sh
@@ -1,5 +1,9 @@
 #!/bin/bash -e
 
+if [ "$JOB" == "3.8-dev" ]; then
+    /bin/bash ci/build38.sh
+    exit 0
+fi
 
 # edit the locale file if needed
 if [ -n "$LOCALE_OVERRIDE" ]; then