How can I generate HTML code coverage reports with new cabal?

Question

Running stack test --coverage generates a nice HTML report showing what lines your test suite covers. How can I achieve the same thing using cabal new-test?

I'm able to pass --enable-coverage to generate a .tix file but I'm not sure what to run on the .tix file to generate the HTML report. I'm pretty sure it involves hpc but I haven't been able to work out the right command.

I have the standard Cabal configuration of my application being a library, with a test-suite for that library.

Answer 1

It appears it's as easy as passing --enable-coverage to cabal new-test. I had previously been running tests with cabal new-run test:test to workaround some limitations of new-test (e.g. lacking streaming and colors), so the fix is to use new-test instead of new-run.