<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> <span class="h-card" translate="no"><a href="https://hachyderm.io/@fasterthanlime" class="u-url mention">@<span>fasterthanlime</span></a></span> </p><p>proc_macro2 does some heavy lifting i rather would not want to miss. Esp it allows extensive testing and parsing &str data. That saied, unsynn could be made that it uses proc_macro2 only as dev/test dependency via feature-flags. I am currently not planning to integrate this but I would merge a PR which addresses this.</p>