Roc Zulip Daily Summary — 2026-02-25

• Realm: https://roc.zulipchat.com
• Window: 2026-02-25 12:00 AM to 2026-02-26 12:00 AM (America/Los_Angeles)
• Messages: 13
• LLM: vertex_open_model model=zai-org/glm-5-maas topics=4 ok=0/4 (failed: vertex open model call failed: HTTP 429: [{ “error”: { “code”: 429, “message”: “Resource exhausted. Please try again later. Please refer to https://cloud.google.com/vertex-ai/generative-ai/docs/error-code-429 for more details.”, “status”: “RESOURCE_EXHAUSTED” } } ])

Top threads

command line parsing

• Channel: beginners
• Conversation: command line parsing
• Messages: 9
• People: 3
• Time: 8:18 PM–11:38 PM (America/Los_Angeles)
• Participants: Luke Boswell, Norbert Hajagos, Plas
• Link: https://roc.zulipchat.com/#narrow/channel/231634-beginners/topic/command.20line.20parsing/near/575950672

Key links

• https://github.com/roc-lang/basic-cli/releases/download/0.20.0/X73hGh05nNTkDHU06FHC0YfFaQB1pimX7gncRcao5mU.tar.br
• https://github.com/roc-lang/roc/releases/tag/alpha4-rolling

• https://github.com/roc-lang/nightlies/releases

• [11:38 PM] Norbert Hajagos: I don’t know how weaver works, but there shouldn’t be that big of a dependence on platforms in packages. By that, I mean weaver probably takes a value (string or list of strings) and does the parsing. It’s not like a go or js package where the package is al…
• [8:18 PM] Plas: Hi, I’m new to the language and ecosystem.

Does anyone have a recommendation on command line parsing? I thought ‘weaver’ to be the de-facto standard, but I couldn’t get it to work, the examples don’t compile. I think it might be because of version mismatch…

Loon Programming Language

• Channel: off topic
• Conversation: Loon Programming Language
• Messages: 2
• People: 2
• Time: 4:36 PM–8:32 PM (America/Los_Angeles)
• Participants: Sky Rose, misterdrgn

• Link: https://roc.zulipchat.com/#narrow/channel/306878-off-topic/topic/Loon.20Programming.20Language/near/575929597

• [4:36 PM] misterdrgn: Vibe-coded language
• [8:32 PM] Sky Rose: Ah dang

eval snapshots snippet expect

• Channel: compiler development
• Conversation: eval snapshots snippet expect
• Messages: 1
• People: 1
• Time: 1:11 AM–1:11 AM (America/Los_Angeles)
• Participants: Anton

• Link: https://roc.zulipchat.com/#narrow/channel/395097-compiler-development/topic/eval.20snapshots.20snippet.20expect/near/575723403

• [1:11 AM] Anton: In an eval snapshot (issue8783_simple_for_match.md), I just changed a top level expect count == 1 to expect count == 0, executed git add and ran zig build minici and everything passed. So those expects are not actually checked… I will look into fi…

Roc Examples - migrate to “Headerless” Applications

• Channel: ideas
• Conversation: Roc Examples - migrate to “Headerless” Applications
• Messages: 1
• People: 1
• Time: 7:44 PM–7:44 PM (America/Los_Angeles)
• Participants: Luke Boswell
• Link: https://roc.zulipchat.com/#narrow/channel/304641-ideas/topic/Roc.20Examples.20-.20migrate.20to.20"Headerless".20Applications/near/575924722

Key links

• https://github.com/roc-lang/roc/blob/main/docs/langref/modules.md#headerless-application-modules

• https://www.roc-lang.org/examples/

• [7:44 PM] Luke Boswell: I noticed Richard just landed the explanation for headerless apps design… https://github.com/roc-lang/roc/blob/main/docs/langref/modules.md#headerless-application-modules

How do people feel about migrating our https://www.roc-lang.org/examples/ to use th…