PEP 660: Editable installs for PEP-517 style build backends

Hey folks, I’ve wrote up the competing PEP under TBD: Editable installs by gaborbernat · Pull Request #1977 · python/peps · GitHub (if you’re a core dev and like what it’s proposing please ping me if you wish to sponsor it). Feedback welcome, hope is moderately readable though.

Discussion on proposal moved to Discuss TBD: Editable installs by gaborbernat