debug github actions

Author: marian-code

.github/workflows/python-package.yml

@@ -17,11 +17,20 @@ on:
 jobs:
   build:
 
-    runs-on:
-    - ubuntu-latest
-    - macos-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        os: [macos-latest, ubuntu-latest]
+        include:
+        - os: macos-latest
+          TARGET: x86_64-apple-darwin
+          COMPILER: clang
+          LINKER: clang
+
+        - os: ubuntu-latest
+          TARGET: x86_64-unknown-linux-musl
+          COMPILER: gcc
+          LINKER: gcc
         python-version: [3.6, 3.7, 3.8, 3.9]
 
     steps: