Change the local build strategy

Signed-off-by: Artyom Vancyan <[email protected]>

.github/workflows/tests.yml

@@ -66,7 +66,7 @@ jobs:
       - name: Install dependencies
         run: |
           pip install --upgrade pip
-          python -m pip install -e .
+          sh build.sh
           pip install tox tox-gh-actions
       - name: Run tests using tox
         run: tox -e ${{ matrix.env }}

build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# last version of `build` supporting Python 3.6
+pip install build==0.9.0
+
+# build the wheel and install it
+WHEEL_NAME=$(python -m build | grep -Po "django_mermaid-.*\.whl" | tail -n 1)
+pip install dist/$WHEEL_NAME

tox.ini

@@ -17,6 +17,7 @@ deps =
     django21: django<2.2
     django11: django<2.0
     -r{toxinidir}/tests/requirements.txt
+allowlist_externals = sh
 commands =
-    pip install -e .
+    sh build.sh
     pytest