Support `pyodide build -v/vv`

[mroeschke]

🚀 Feature

When using pyodide build it would be nice to have a -v and --vv for verbose build logging

Motivation

When using cibuildwheel to build pyodide wheels, a build-verbosity setting, https://cibuildwheel.pypa.io/en/stable/options/#build-verbosity, can be set which passes -v and --vv flags to the build step. Currently passing these flags to pyodide build will error e.g. https://github.com/pandas-dev/pandas/actions/runs/16574102747/job/46873985965?pr=61981

Pitch

Add compatibility and any additional level of build verbosity to pyodide build by adding -v and -vv flags for interoperability with cibuildwheel and improved build context respectively.

Alternatives

None

Additional context

[agriyakhetarpal]

Thanks for filing this issue, @mroeschke! I'll move this feature request to the pyodide-build repository, as it concerns it.

[agriyakhetarpal]

pyodide-build is a wrapper over pypa/build, so all we should need to do is call the relevant pypa/build API and wrap the -v/-vv command-line arguments for pyodide build.

[agriyakhetarpal]

I checked: pypa/build does not have a parameter in its public API that we can toggle between for adjusting the verbosity of the build backend through our wrapper. Given that the error is from the build backend in this case—from https://github.com/pandas-dev/pandas/actions/runs/16574102747/job/46873985965?pr=61981#step:8:436, we can see that meson-python as a build backend does not understand the -v/-vv arguments—this part should be handled in meson-python.

We wouldn't want to deviate from build's behaviour or adjust the verbosity on our own for specific build backends as they come. So, I understand that this request is rather about (1) having more debugging output from pyodide-build itself, so we need to make pypa/build itself accept a verbosity argument in

pyodide-build/pyodide_build/pypabuild.py

Line 146 in 94f44a5

def _build_in_isolated_env(

(and similarly in our use of _build_in_current_env), and (2) also enhance our logger to log more parts about what we are doing as a build frontend with -v and -vv.

pypa/cibuildwheel#2339 also has some related discussion, especially the table in pypa/cibuildwheel#2339 (comment). The next step could be to mark pyodide-build as a build frontend explicitly here: https://github.com/pypa/cibuildwheel/blob/9e4e50bd76b3190f55304387e333f6234823ea9b/cibuildwheel/frontend.py#L10.