on CI, use C8-pythia for now...

.gitlab-ci.yml

@@ -92,7 +92,7 @@ check-clang-format:
   script:
     - mkdir -p build
     - cd build
-    - cmake .. -DCMAKE_BUILD_TYPE=Debug -DUSE_PYTHIA8_C8=SYSTEM
+    - cmake .. -DCMAKE_BUILD_TYPE=Debug -DUSE_PYTHIA8_C8=C8
   rules:
     - if: $CI_MERGE_REQUEST_ID
     - if: $CI_COMMIT_TAG
@@ -450,7 +450,7 @@ install-clang-8:
     - corsika
   script:
     - cd build
-    - cmake .. -DCMAKE_BUILD_TYPE=Release -DUSE_PYTHIA8_C8=SYSTEM
+    - cmake .. -DCMAKE_BUILD_TYPE=Release -DUSE_PYTHIA8_C8=C8
     - cmake --build . -- -j4
     - set -o pipefail
     - ctest -j4 
@@ -513,7 +513,7 @@ coverage:
     - corsika
   script:
     - cd build
-    - cmake .. -DCMAKE_BUILD_TYPE=Coverage -DUSE_PYTHIA8_C8=SYSTEM
+    - cmake .. -DCMAKE_BUILD_TYPE=Coverage -DUSE_PYTHIA8_C8=C8
     - cmake --build . -- -j4
     - ctest -j4 
     - cmake --build . --target coverage

tests/modules/testPythia8.cpp

@@ -170,6 +170,6 @@ TEST_CASE("pythia process") {
     model.doInteraction(view);
     [[maybe_unused]] const GrammageType length = model.getInteractionLength(particle);
     CHECK(length / 1_kg * square(1_m) == Approx(43.04).margin(5e-1));
-    CHECK(view.getSize() == 40);
+    CHECK(view.getSize() == 38);
   }
 }