All the projects I didn't finish, and why it was worth it

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All the projects I didn't finish and why it was worth it Jakub Kozłowski | Scalar Conf 2025

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10 years with Scala

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This talk is for you!

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Why I'm here today Stories of past projects What I learned My new approach to side projects

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Why I'm here today Stories of past projects What I learned My new approach to side projects

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Why I'm here today Stories of past projects What I learned My new approach to side projects

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Project stories

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Flawless

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Main idea you control the execution

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Path-dependent types in Flawless

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Higher-kinded fixpoint types

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Flawless - takeaways

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Precise control == more complexity

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Auto-discovery isn't that bad

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Custom entrypoint == less tooling support

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Quick lesson in pragmatism

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Killing a project is OK

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Advent of Code videos (2021)

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Day 1

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Days 2-9

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Days 10-13

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AoC isn't daily programming

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AoC videos - takeaways

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Knowing when to stop

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Talk about your ups and downs

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Smithy Transcoder

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Smithy Transcoder - takeaways

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Having goals is nice

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Finishing things is nice

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My new framework for side projects

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Side note: it's just vibes

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I do it for myself

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I can't do it all

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One thing at a time

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Celebrate completion

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Embrace failure

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I define the goal

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Resources Four Thousand Weeks: Time Management for Mortals*: Flawless: Flawless talk: AoC videos: Smithy Transcoder: https://a.co/d/fMCB1Ac https://github.com/kubukoz/flawless https://www.youtube.com/watch?v=v9nv3dfYfw4 https://www.youtube.com/watch? v=AhcDxzjrUUI&list=PL1NS3pe5mmu006cN9LjcLA9aBJlZZCzJ1 https://kubukoz.github.io/smithy-transcoder/

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Thank you Get in touch X / Mastodon / GitHub / YouTube / Slides: https://linktr.ee/kubukoz