6 minutes read. Published: 2022-05-09 Table of contents Update 2022-05-10 BUT... Introduction The flatpak tools The flatpak manifest Problem 1: where should I get the runtime from? Solution Problem 2: what version is it? Solution Problem 3: reproducibility Solution Conclusions Update 2022-05-10 I've just talked to a flatpak contributor, who gave me more information on the topic. Flatpaks technically are reproducible! All the metadata needed to reproduce the build is present inside the built pack...