> The MacPorts installer pkg will need to be submitted, but I don't think much else will change. Using MacPorts-built kernel extensions is already impossible because of signing requirements (we don't have a kext signing certificate and I don't think we qualify for one.)

> For general apps, Gatekeeper doesn't prevent running locally built ones due to them being unsigned, and I gather than notarization is only required in the same circumstances as signing. (It would be incredibly inconvenient for developers to test anything if this were not the case.)

https://lists.macports.org/pipermail/macports-dev/2019-Septe...

> * For 10.14 users: The pkg meets Apple's new requirements for notarization. This includes enabling the hardened runtime for all executables, which has the potential to cause new issues due to denying access to certain system resources and preventing the loading of unsigned plugins. Please let us know about any such problems.

MacPorts .pkg installers are notarized since 2.6.0.