Ensure pip packages are built

.travis.yml

@@ -25,6 +25,11 @@ stages:
     if: tag =~ ^v(\d+|\.)+[^a-z]\d+$ 
   - name: docs
     if: (branch = master) AND (type != pull_request)
+  - name: pip_dev_package
+    if: tag =~ ^v(\d+|\.)*[a-z]\d*$
+  - name: pip_package
+    if: tag =~ ^v(\d+|\.)*[^a-z]\d*$
+
 
 jobs:
   include:
@@ -68,12 +73,29 @@ jobs:
         - doit package_build $CHANS $PKG_TEST_PYTHON --test-group=unit
       script: doit package_upload --token=$ANACONDA_TOKEN $LABELS
 
+    - <<: *default
+      stage: pip_dev_package
+      env: PYPI="https://test.pypi.org/legacy/" TRAVIS_NOCACHE=$TRAVIS_JOB_ID
+      install:
+        - doit develop_install $CHANS_DEV -o tests && pip uninstall -y panel
+        - doit pip_on_conda
+        - doit ecosystem=pip package_build --test-python=py36 --test-group=unit
+      script: doit ecosystem=pip package_upload -u $TPPU -p $TPPP -r ${PYPI}
+
     ## release packages
 
     - <<: *conda_pkg
       stage: conda_package
       env: DESC="" TRAVIS_NOCACHE=$TRAVIS_JOB_ID LABELS=$LABELS_REL CHANS=$CHANS_REL
 
+    - <<: *default
+      stage: pip_package
+      env: PYPI="https://upload.pypi.org/legacy/" TRAVIS_NOCACHE=$TRAVIS_JOB_ID
+      install:
+        - doit develop_install $CHANS -o tests && pip uninstall -y panel
+        - doit pip_on_conda
+        - doit ecosystem=pip package_build --test-python=py36 --test-group=unit
+      script: doit ecosystem=pip package_upload -u $PPU -p $PPP -r ${PYPI}
 
     ########## DOCS ##########