Set up Github Actions to handle CI

* Tweak env names for easier templating
* Add condarc file to force conda-forge
* Run xonsh as module to avoid windows PATH issues

.github/workflows/black.yml

@@ -0,0 +1,15 @@
+name: Black
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Black Check
+      uses: "lgeiger/black-action@master"
+      with:
+        args: "--check --exclude=xonsh/ply/ xonsh/ xontrib/"

.github/workflows/elm.yml

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+name: Check Elm
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Python 3.7 Elm Check Ubuntu
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup conda
+        uses: goanpeca/setup-miniconda@v1
+        with:
+          activate-environment: elm-xonsh-test
+          environment-file: ci/environment-elm.yml
+          update-conda: true
+          python-version: 3.7
+          condarc-file: ci/condarc.yml
+      - shell: bash -l {0}
+        run: |
+          python -m pip install . --no-deps
+          pushd xonsh/webconfig
+          python -m xonsh elm-compile.xsh
+          popd

.github/workflows/pytest.yml

@@ -0,0 +1,27 @@
+name: pytest
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        python-version: [3.6, 3.7, 3.8]
+    name: Python ${{ matrix.python-version }} ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup conda
+        uses: goanpeca/setup-miniconda@v1
+        with:
+          activate-environment: ${{matrix.python-version}}-xonsh-test
+          environment-file: ci/environment-${{matrix.python-version}}.yml
+          update-conda: true
+          python-version: ${{ matrix.python-version }}
+          condarc-file: ci/condarc.yml
+      - shell: bash -l {0}
+        run: |
+          python -m pip install . --no-deps
+          python -m xonsh run-tests.xsh --timeout=10
+

ci/condarc.yml

@@ -0,0 +1,3 @@
+channels:
+  - conda-forge
+  - main

ci/environment-3.5.yml

@@ -1,4 +1,4 @@
-name: py35-xonsh-test
+name: 3.5-xonsh-test
 channels:
   - conda-forge
   - defaults

ci/environment-3.6.yml

@@ -1,4 +1,4 @@
-name: py36-xonsh-test
+name: 3.6-xonsh-test
 channels:
   - conda-forge
   - defaults

ci/environment-3.7.yml

@@ -1,4 +1,4 @@
-name: py37-xonsh-test
+name: 3.7-xonsh-test
 channels:
   - conda-forge
   - defaults

ci/environment-3.8.yml

@@ -1,4 +1,4 @@
-name: py38-xonsh-test
+name: 3.8-xonsh-test
 channels:
   - conda-forge
   - defaults

news/github_actions.rst

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+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* Moved most CI to github actions
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>