[librsvg: 1/2] Hack around grcov bug to make the toplevel index.html actually show all source directories

[Federico Mena Quintero <federico src gnome org>]

commit 7398d50940bbe32afee34d882b739a694e6ad955
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Jan 14 17:42:33 2022 -0600

    Hack around grcov bug to make the toplevel index.html actually show all source directories
    
    Found a bug in grcov!
    https://github.com/mozilla/grcov/issues/753
    
    Normally, grcov creates this:
    
      html/             substituted with the --output-path option's value
        index.html      index of all directories with their coverage summaries
        src/
          index.html    summary of all source files in src/
          foo.rs.html   report for src/foo.rs
          bar.rs.html   report for src/bar.rs
    
    However, the presence of build.rs in the toplevel source dir causes
    grcov to overwrite its toplevel html/index.html (the index of all
    directories) with the report for top_srcdir/index.html (the summary
    for the toplevel source directory, that only lists build.rs).
    
    So, we ignore build.rs for now in the HTML coverage report.  I would
    also like to get coverage info for build.rs, but it's not terribly
    important right now.  The only uncovered source lines in it are fatal
    error handlers, the ones that would cause the build to fail anyway.

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index eb881c701..301584975 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -124,7 +124,7 @@ coverage:
     - cargo +nightly test --no-fail-fast || true
   after_script:
     - ./grcov . --binary-path ./target/debug/ --source-dir . --output-type cobertura --llvm --branch 
--ignore-not-existing --ignore "*cargo*" -o coverage.xml
-    - ./grcov . --binary-path ./target/debug/ --source-dir . --output-type html --llvm --branch 
--ignore-not-existing --ignore "*cargo*" --output-path ./target/debug/coverage/
+    - ./grcov . --binary-path ./target/debug/ --source-dir . --output-type html --llvm --branch 
--ignore-not-existing --ignore "build.rs" --output-path ./target/debug/coverage/
     - mkdir -p public/coverage
     - cp -r target/debug/coverage/* public/coverage
     - grep -Eo 'line-rate="[^"]+"' coverage.xml | head -n 1 | grep -Eo '[0-9.]+' | awk '{ print "Coverage:", 
$1 * 100 }'