Explore the challenges and lessons learned in building a framework through this conference talk from ElixirConf EU 2023. Delve into the journey of Membrane, an open-source framework, as it approaches its core 1.0 release. Gain insights into organizing work, making tradeoffs, setting priorities, creating abstractions, structuring code, and designing APIs in the context of framework development. Learn how these common project challenges manifest uniquely when creating a framework. Discover the intricacies of going open source and the specific considerations involved in framework development. Use Membrane's experience as a case study to understand the exciting yet demanding process of building a framework from the ground up.