Add CI to build webconfig

.circleci/config.yml

@@ -215,6 +215,54 @@ jobs:
           command: |
             export PATH="$HOME/miniconda/bin:$PATH"
             black --check --exclude=xonsh/ply/ xonsh/ xontrib/
+  build_elm:
+    machine: true
+    environment:
+      PYTHON: "3.7"
+      ENV_NAME: "elm-xonsh-test"
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - miniconda-v1-{{ checksum "ci/environment-elm.yml" }}
+      - run:
+          name: install miniconda
+          command: |
+              if [ ! -d "/home/circleci/miniconda" ]; then
+                wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
+                bash miniconda.sh -b -p $HOME/miniconda
+                export PATH="$HOME/miniconda/bin:$PATH"
+                conda config --set always_yes yes --set changeps1 no --set channel_priority strict
+              fi
+              sudo chown -R $USER.$USER $HOME
+      - run:
+          name: configure conda
+          command: |
+              export PATH="$HOME/miniconda/bin:$PATH"
+              export ENV_NAME="elm-xonsh-test"
+              if [ ! -d "/home/circleci/miniconda/envs/elm-xonsh-test" ]; then
+                conda update -q conda
+                conda env create -f ci/environment-${PYTHON}.yml --name=${ENV_NAME}
+                source activate ${ENV_NAME}
+              fi
+              conda env list
+              conda list ${ENV_NAME}
+      - save_cache:
+          key: miniconda-v1-{{ checksum "ci/environment-elm.yml" }}
+          paths:
+            - "/home/circleci/miniconda"
+      - run:
+          command: |
+            export PATH="$HOME/miniconda/bin:$PATH"
+            source activate ${ENV_NAME}
+            pip install . --no-deps
+      - run:
+          command: |
+            export PATH="$HOME/miniconda/bin:$PATH"
+            source activate ${ENV_NAME}
+            pushd xonsh/webconfig
+            ./elm-compile.xsh
+            popd
 
 
 workflows:
@@ -224,6 +272,7 @@ workflows:
       - build_35
       - build_36
       - build_37
+      - build_elm
       - build_black
       # conda-foge does not yet have all Python 3.8 packages available
       # uncomment when it does

ci/environment-elm.yml

@@ -0,0 +1,10 @@
+name: elm-xonsh-test
+channels:
+  - conda-forge
+  - defaults
+dependencies:
+  - python=3.7
+  - pygments
+  - elm
+  - uglify-js
+  - docutils