According to the support policy, MongoDB 3.2 is EOL since September 2018 and version 3.4 does not support x86 any more. Please remove support for dev-db/mongodb on x86 so we can drop the EOL MongoDB versions in Gentoo. Thank you. https://www.mongodb.com/support-policy https://docs.mongodb.com/manual/installation/#mongodb-supported-platforms
https://github.com/gentoo/gentoo/commit/5f8375195a1ff6d9efd9039a5a309e97e41802b1