adding wrapper

.github/workflows/linux.yml

@@ -9,8 +9,8 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: installing preliminaries
-      run: sudo apt install blender
+      run: sudo apt install blender python3
     - name: package add-on
       run: make
     - name: install blender plugin
-      run: blender -b --python scripts/install.py --python-exit-code 1
+      run: python3 scripts/wrapper.py blender -b --python scripts/install.py --python-exit-code 1

scripts/install.py

@@ -1,13 +1,4 @@
-try:
-    import bpy
-    bpy.ops.preferences.addon_install(filepath="bleMD.zip",overwrite=True)
-    bpy.ops.preferences.addon_enable(module='bleMD')
-
-except Exception as e:
-    print("Aha I caught an exception")
-    print(e)
-    raise e
-### You must print this line, otherwise the Github action will think 
-### the script failed.
-#print("SCRIPT COMPLETED SUCCESSFULLY")
-
+import bpy
+bpy.ops.preferences.addon_install(filepath="bleMD.zip",overwrite=True)
+bpy.ops.preferences.addon_enable(module='bleMD')
+print("---successful completion---")

scripts/wrapper.py

@@ -0,0 +1,20 @@
+import subprocess
+import sys
+
+try:
+    output = subprocess.check_output(sys.argv[1:])
+    print(output.decode('ascii'))
+    if not "---successful completion---" in output.decode('ascii'):
+        raise Exception("Script errored out")
+    print("Successful completion")
+except FileNotFoundError as e:
+    print("could not find file", e)#, e.output)
+    raise e
+except subprocess.CalledProcessError as e:
+    print("error code", e.returncode)#, e.output)
+    raise e
+except Exception as e:
+    print(e)
+    raise e
+
+print("Ah yes, definitely successful")