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CUE

@cuelang.org

CUE is an open source language for reliable configuration at scale. Prevent misconfiguration before it breaks production. Built and maintained by CUE Labs. cuelang.org

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19.06.2023
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Latest posts by CUE @cuelang.org

Release v0.16.0 · cue-lang/cue Changes which may break some users are marked below with: ⚠️ Language As a reminder, we have two ongoing language experiments since v0.15; a replacement for struct embedding and a rework of aliases...

📣 We have released #cuelang v0.16.0 - introducing an experiment with `try` and `else`, big performance gains, lots of LSP work, and much more! 🎉

03.03.2026 14:18 👍 5 🔁 1 💬 0 📌 0
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What is Configuration anyway? And why is it so hard? CUE Labs is a configuration company. CUE is a configuration language. Our Configuration Control Plane is an end-to-end solution for everything configuration management. That raises a basic question: w...

Configuration is a simple concept.

At scale, it is one of the hardest engineering problems.

How bad processes drive misconfigurations and why we still over-rely on human coordination:

26.02.2026 16:48 👍 2 🔁 2 💬 0 📌 0
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Release v0.16.0-rc.1 · cue-lang/cue Changes which may break some users are marked below with: ⚠️ Language As a reminder, we have two ongoing language experiments since v0.15; a replacement for struct embedding and a rework of aliases...

📣 We have just released #cuelang v0.16.0-rc.1 - reworking `else` as part of the "try" experiment, and fixing a regression in alpha.2 🎉

25.02.2026 13:58 👍 1 🔁 0 💬 0 📌 0
CUE Community Update (from February 19, 2026)
CUE Community Update (from February 19, 2026) YouTube video by cuelang

📣 Missed last week’s Community Update?

We covered release updates, performance improvements, LSP progress, and more.

Here’s the full recording: youtu.be/-IlIOEUzHjg

23.02.2026 15:55 👍 0 🔁 0 💬 0 📌 0
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2026-02-19 CUE Community Update · cue-lang cue · Discussion #4247 We are excited to announce the first CUE Community Update of the year on Thursday, February 19, 2026 at 1600 UTC. Agenda CUE Hub Community Updates Release Updates Evaluator updates and performance ...

🔈 Starting in ≈30 minutes at 1600 UTC sharp - our first Community Call of the year. You can find the agenda and call-in details here: github.com/cue-lang/cue...

19.02.2026 15:28 👍 0 🔁 0 💬 0 📌 0
Release v0.16.0-alpha.2 · cue-lang/cue Changes which may break some users are marked below with: ⚠️ Language As a reminder, we have two ongoing language experiments since v0.15; a replacement for struct embedding and a rework of aliases...

📣 We have just released CUE v0.16.0-alpha.2 - introducing `else`, the `try` clause experiment, lots of LSP work, and many other improvements 🎉

19.02.2026 12:06 👍 6 🔁 0 💬 0 📌 0
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2026-02-19 CUE Community Update · cue-lang cue · Discussion #4247 We are excited to announce the first CUE Community Update of the year on Thursday, February 19, 2026 at 1600 UTC. Agenda CUE Hub Community Updates Release Updates Evaluator updates and performance ...

Tomorrow, Feb 19 at 16:00 UTC — our first Community Update of the year🚀

We’ll cover major LSP progress, recent releases, and what’s next for our Configuration Control Plane. Plenty to unpack.

Full agenda and call-in details: github.com/cue-lang/cue...

18.02.2026 10:08 👍 1 🔁 0 💬 0 📌 0

Want to talk about how to end configuration chaos?

We will be at @fosdem.org (Brussels, Jan 31–Feb 1) and @cfgmgmtcamp.bsky.social (Ghent, Feb 2–4) 🚀

Ping us if you’re around.

29.01.2026 15:49 👍 4 🔁 1 💬 0 📌 2
Release v0.16.0-alpha.1 · cue-lang/cue Changes which may break some users are marked below with: ⚠️ Language As a reminder, we have two ongoing language experiments since v0.15; a replacement for struct embedding and a rework of aliases...

📣 We have just released #cuelang v0.16.0-alpha.1 - packed with big performance gains, lots of LSP work, and many other improvements 🎉

28.01.2026 16:14 👍 5 🔁 1 💬 0 📌 0
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Release v0.15.4 · cue-lang/cue Evaluator Fix a panic which could occur when using the error built-in with cyclic references. Fix a panic which could occur when loading @experiment(aliasv2) syntax with an invalid alias name. cmd/...

📣 We have just released CUE v0.15.4 - including two panic fixes and yet another TOML bug fix 🎉

27.01.2026 16:36 👍 2 🔁 0 💬 0 📌 0
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Release v0.15.3 · cue-lang/cue Evaluator Fix a panic which could occur when using Expr after LookupPath on a cue.Value. cmd/cue Fix a panic which could occur when using cue cmd tasks referencing definitions. Fix a panic which co...

📣 We have just released CUE v0.15.3 - including three panic fixes as well as a TOML decoder fix 🎉

30.12.2025 11:33 👍 5 🔁 0 💬 0 📌 0
Replace Your GitHub Actions YAML with CUE
Replace Your GitHub Actions YAML with CUE YouTube video by Rawkode Academy

Make GitHub Actions, and the rest of your CI/CD and workflow stack, more powerful with type safety, validation, reusability, and policy enforcement using CUE!

How? Easy - check out this hands-on demo from our community member @rawkode.dev:

www.youtube.com/watch?v=MFtQ...

10.12.2025 16:09 👍 6 🔁 3 💬 0 📌 0

Missed Tuesday's Community Call? We've got you covered. The recording, transcript, and slides are now online: github.com/cue-lang/cue...

04.12.2025 17:06 👍 2 🔁 0 💬 0 📌 0
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2025-12-02 CUE Community Update · cue-lang cue · Discussion #4193 We are excited to announce our next CUE Community Update, on Tuesday, December 02, 2025 at 1600 UTC. Agenda CUE Labs launch and the Configuration Control Plane Release Updates Evaluator updates, in...

🔈 Starting in ≈60 minutes at 1600 UTC - our last Community Call before the end of 2025. You can find the agenda and call-in details here: github.com/cue-lang/cue...

02.12.2025 14:59 👍 0 🔁 0 💬 0 📌 0
The "Shift-Left" Editor: A CUE LSP Deep Dive
The "Shift-Left" Editor: A CUE LSP Deep Dive YouTube video by cuelang

Missed our deep dive on the CUE LSP?

No worries - we re-recorded the demo! See how to bring CUE's logic engine into your editor with instant validation, error-checking, and rich language features as you type.

Watch here: youtu.be/4bVddevVK9c

01.12.2025 18:03 👍 4 🔁 1 💬 0 📌 1
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2025-12-02 CUE Community Update · cue-lang cue · Discussion #4193 We are excited to announce our next CUE Community Update, on Tuesday, December 02, 2025 at 1600 UTC. Agenda updated in the upcoming days. If there is any topic you are interested in, please let us ...

Our next CUE Community Call is on Tuesday, Dec 2, at 1600 UTC. Join us to talk configuration, what’s coming next for CUE, and the direction for the weeks ahead.

Find all the details here: github.com/cue-lang/cue...

26.11.2025 15:05 👍 3 🔁 1 💬 0 📌 0
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Release v0.15.1 · cue-lang/cue Evaluator Fix an evalv3 regression first introduced in v0.11.0 where the and built-in function started evaluating its arguments too eagerly, causing failures in cue def. Fix an evalv3 regression wh...

📣 We have just released #cuelang v0.15.1 - including multiple fixes for the evaluator and the LSP 🎉

21.11.2025 12:01 👍 7 🔁 0 💬 0 📌 0

thanks for pointing it out. fixed!

20.11.2025 13:16 👍 1 🔁 0 💬 0 📌 0
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The "Shift-Left" Editor: A CUE LSP Deep Dive · cue-lang cue · Discussion #4179 We are excited to announce our next CUE community event, on Tuesday November 18, 2025 at 1600 UTC. Agenda This session is a technical deep dive focused on the CUE developer workflow. The main event...

🚀 In about an hour, we’re doing a technical deep dive and live demo of the “Shift-Left” editor (CUE LSP). Join us here at 1600UTC: github.com/cue-lang/cue...

18.11.2025 15:03 👍 0 🔁 0 💬 0 📌 0
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The "Shift-Left" Editor: A CUE LSP Deep Dive · cue-lang cue · Discussion #4179 We are excited to announce our next CUE community event, on Tuesday November 18, 2025 at 1600 UTC. Agenda This session is a technical deep dive focused on the CUE developer workflow. The main event...

📣 Meet the "Shift-Left" Editor.

Join us next Tuesday, Nov 18, at 16:00 UTC for a hands-on demo of the new CUE LSP. Get real-time validation, error-checking and language features as you type - right inside your editor.

Learn more + call in details: github.com/cue-lang/cue...

13.11.2025 17:55 👍 6 🔁 1 💬 0 📌 0

Join us in twenty minutes for the v0.15 Office Hours session - come ask any questions about the release and ongoing #cuelang work! meet.google.com/iya-qiii-imn

07.11.2025 16:09 👍 3 🔁 0 💬 0 📌 0
CUE Labs Launch Event with Kelsey Hightower: Explore Our Configuration Control Plane
CUE Labs Launch Event with Kelsey Hightower: Explore Our Configuration Control Plane YouTube video by cuelang

🚀 Missed our launch event with @kelseyhightower.com? No worries, the recording is now live: youtu.be/LleBb8LtQ8M

Curious how the Configuration Control Plane fits into your setup? Book one our limited office hours: cal.com/team/cue/con...

07.11.2025 11:40 👍 6 🔁 3 💬 0 📌 1

And tomorrow at 16:30 UTC @mvdan.cc will be hosting a v0.15 Office Hours session, where you can come and ask any questions you might have about the release and ongoing work!

Find the event in our community calendar (cuelang.org/s/community-...), or join via: meet.google.com/iya-qiii-imn

06.11.2025 17:16 👍 2 🔁 0 💬 0 📌 0
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Release v0.15.0 · cue-lang/cue Changes which may break some users are marked below with: ⚠️ Note that this release no longer includes a checksums.txt asset; GitHub now provide digests natively. LSP This release includes the init...

📣 We have just released #cuelang v0.15.0 - introducing the CUE LSP, two new language experiments, and much, much more 🎉

06.11.2025 13:20 👍 7 🔁 3 💬 0 📌 1
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CUE Labs launch event with Kelsey Hightower · Zoom · Luma Configuration chaos is a multi-billion-dollar blind spot. But imagine a world where configuration isn't a source of fear, but a source of reliability. A world…

Final call! 📣

Join us with @kelseyhightower.com tomorrow, Tuesday, Nov 4, at 17:00 UTC to explore the future of configuration with our Configuration Control Plane, and turn configuration from a source of risk into a source of reliability!

Register here: luma.com/ysloofz3

03.11.2025 15:50 👍 9 🔁 5 💬 2 📌 5
A World Without Configuration Chaos: The Configuration Control Plane Imagine a world where you can answer, with absolute confidence, the critical question: “What is the full impact of this change?” A world where configuration isn’t a source of fear, but a source of rel...

Big news: We’re thrilled to officially announce CUE Labs, the company behind CUE, founded by creator @mpvl.io and @myitcv.io.

CUE Labs provides the dedicated stewardship and resources accelerating CUE's open source development and ensuring its long-term, stable future.

cue.dev/blog/announc...

30.10.2025 11:40 👍 8 🔁 1 💬 1 📌 0
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Release v0.15.0-rc.1 · cue-lang/cue Changes which may break some users are marked below with: ⚠️ Note that this release no longer includes a checksums.txt asset; GitHub now provide digests natively. cmd/cue cue mod resolve gains a --...

📣 We have just released #cuelang v0.15.0-rc.1 - including support for find-references and rename in the LSP 🎉

29.10.2025 14:38 👍 2 🔁 0 💬 0 📌 0
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Release v0.15.0-alpha.3 · cue-lang/cue Changes which may break some users are marked below with: ⚠️ Evaluator aliasv2 experiment ⚠️ The self experiment introduced in v0.15.0-alpha.2 has been renamed to aliasv2, to fully implement the Po...

📣 We have just released CUE v0.15.0-alpha.3 - featuring the `aliasv2` experiment, initial support for exporting to JSON Schema, and many fixes 🎉

22.10.2025 12:29 👍 2 🔁 0 💬 0 📌 0

Been playing around with @cuelang.org and building a new home automation system to control my lighting and written up first post about the project still loads of other content to write though!

Big thanks to @myitcv.io @rog.bsky.social @mvdan.cc for all there help

aran.dev/posts/cue/us...

18.10.2025 11:54 👍 7 🔁 3 💬 0 📌 0
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Release v0.14.2 · cue-lang/cue Evaluator Fix an unintended evalv2 regression in v0.14.1; the change only intended to affect evalv3. Fix a panic in the parser which could occur when @experiment() file attributes are invalid. Fix ...

📣 We have just released #cuelang v0.14.2 - fixing an unintended evalv2 regression, and backporting two other fixes 🎉

10.10.2025 13:42 👍 5 🔁 0 💬 0 📌 0