Ship It! – Episode #64

Bass: the beat drop after Concourse

with Alex Suraci (vito), creator of Concourse CI & Bass

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Our today’s guest spent 4 days building a feature for his side project so that we could ship it together on Ship It!, while recording. The feature is called rave mode, and the context is Bass, an interpreted functional scripting language written in Go, riffing on the ideas of Kernel & Clojure. When the local build runs, you can now press r to synchronise the beats of your currently playing Spotify track with the build output. For a demo, see bass v0.9.0 release.

Please welcome Alex Suraci, a.k.a. vito, the creator of Concourse CI and Bass.

This episode is dedicated to the late John Shutt, the creator of Kernel.

Your ideas continue in Bass.

Thank you for getting them out into the world.



SourcegraphTransform your code into a queryable database to create customizable visual dashboards in seconds. Sourcegraph recently launched Code Insights — now you can track what really matters to you and your team in your codebase. See how other teams are using this awesome feature at

SentryWorking code means happy customers. That’s exactly why teams choose Sentry. From error tracking to performance monitoring, Sentry helps teams see what actually matters, resolve problems quicker, and learn continuously about their applications - from the frontend to the backend. Use the code SHIPIT and get the team plan free for three months.

RetoolThe low-code platform for developers to build internal tools — Some of the best teams out there trust Retool…Brex, Coinbase, Plaid, Doordash, LegalGenius, Amazon, Allbirds, Peloton, and so many more – the developers at these teams trust Retool as the platform to build their internal tools. Try it free at

Akuity – Akuity is a new platform (founded by Argo co-creators) that brings fully-managed Argo CD and enterprise services to the cloud or on premise. They’re inviting our listeners to join the closed beta at The platform is a versatile Kubernetes operator for handling cluster deployments the GitOps way. Deploy your apps instantly and monitor their state — get minimum overhead, maximum impact, and enterprise readiness from day one.

Notes & Links

📝 Edit Notes

Gerhard & Alex shipping bass v0.9.0
Gerhard & Alex shipping bass v0.9.0


1 00:00 Welcome
2 01:18 Sponsor: Sourcegraph
3 04:22 Intro
4 08:57 The ONLY Concourse view
5 10:06 The design
6 11:15 Biggest early challenge at Concourse
7 15:52 To work on Concourse
8 17:10 Bass
9 19:15 What's better than declarative?
10 22:00 Commands
11 24:19 Multiple themes??
12 26:15 What's a thunk?
13 26:48 Space invaders
14 32:23 Sponsor: Sentry
15 33:16 Run time compiler
16 35:10 Where does it all run?
17 38:31 Github runner
18 40:25 The Ship It file
19 44:40 Rave mode
20 55:20 Sponsor: Retool
21 56:12 Sponsor: Akuity
22 58:21 Let's ship it
23 1:08:43 Should caching be close?
24 1:12:20 Conway's game of life
25 1:14:02 What did you enjoy the most?
26 1:16:24 Nix and Bass
27 1:17:53 0.1.2
28 1:28:04 Wrap up
29 1:30:29 Outro


⏰ Coming Soon


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