codecov: keep only crates/ and do not include crates registry

This avoids collisions between paths, we were seeing odd issues
around some files having a different tracked amount in codecov vs
lcov. It appears to be due to having coverage results from cxx_gen
with the same file paths. We do not want coverage data for anything
else anyway so filter them out.

Author: ahayzen-kdab

.github/workflows/github-cxx-qt-tests.yml

@@ -100,7 +100,7 @@ jobs:
           LLVM_PROFILE_FILE: coverage/coverage_data-%p-%m.profraw
         run: cargo test --lib --package cxx-qt-gen
       - name: generate-report
-        run: grcov . -s . --binary-path ./target/debug/ -t lcov --branch --ignore-not-existing --llvm --llvm-path /usr/lib/llvm-17/bin/ -o ./target/debug/lcov.info --excl-start CODECOV_EXCLUDE_START --excl-stop CODECOV_EXCLUDE_STOP
+        run: grcov . -s . --binary-path ./target/debug/ -t lcov --branch --ignore-not-existing --llvm --llvm-path /usr/lib/llvm-17/bin/ --keep-only 'crates/*' -o ./target/debug/lcov.info --excl-start CODECOV_EXCLUDE_START --excl-stop CODECOV_EXCLUDE_STOP
       - name: upload-report
         uses: codecov/codecov-action@v5
         with:

scripts/grcov_cxx_qt.sh

@@ -32,5 +32,5 @@ export RUSTFLAGS="-Cinstrument-coverage"
 export LLVM_PROFILE_FILE="$SCRIPTPATH/coverage/coverage_data-%p-%m.profraw"
 cargo build --package cxx-qt-gen
 cargo test --package cxx-qt-gen
-grcov . -s . --binary-path ./target/debug/ -t html --branch --ignore-not-existing --llvm --llvm-path=/usr/lib/llvm-17/bin/ -o ./target/debug/ --excl-start CODECOV_EXCLUDE_START --excl-stop CODECOV_EXCLUDE_STOP
+grcov . -s . --binary-path ./target/debug/ -t html --branch --ignore-not-existing --llvm --llvm-path=/usr/lib/llvm-17/bin/ --keep-only 'crates/*' -o ./target/debug/ --excl-start CODECOV_EXCLUDE_START --excl-stop CODECOV_EXCLUDE_STOP
 echo "Coverage html report generated in $(realpath "$SCRIPTPATH"/../target/debug/html)"