libxz requires automake autoconf po4a and libtool, I did not check yet if those exist on CI

also zstd in particular is quite big, do we want all compression libraries?

also zstd in particular is quite big, do we want all compression libraries?

libz is the most-requested one, so we should include that by default, at least. Perhaps we could exclude the other ones by default and allow the developer to optionally enable them somehow? I suspect the only way to do that would be to e.g. check an environment variable in build.rs (e.g. COMPONENTIZE_PY_ENABLE_ZSTD), which means anyone who wants zstd needs to build a custom version of componentize-py, which is awkward; not sure if there's a better way.

I think you can use feature flags in build.rs but that still would mean separate componentize-py versions

technically we could build cpython multiple times, making componentize-py bigger, and then adding an option for minimal, zlib-only or full runtimes

we agreed on Zulip to only include zlib for now