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DiagramIDE

a Rust GUI to Compose Diagrams via Tcl, Prolog, and Pikchr

Details

External ID
47183427
Source
HN
Company
—
Product
DiagramIDE
Website domain
github.com
Launched
Feb. 27, 2026
Cohort
—
Upvotes
6
Upvotes percentile
0.28099730458221023
Tags
—
Fetched at
Sept. 7, 2026, 9:25 p.m.
Updated at
Sept. 7, 2026, 9:25 p.m.

Description

I built DiagramIDE because I wanted a more modular way to handle diagramming-as-code. It’s a Rust-based GUI (EGUI) where you can split logic, data, and rendering into separate windows. Instead of one giant DSL file, you can script components in Tcl, define relationships in Prolog, and pipe the results into Pikchr for the final render.Fair warning: it’s an early alpha and still quite rough around the edges. I’ve been dogfooding it for my own work so it’s definitely functional but expect unexpected.Shortest way to try it out is a compiled binary release: https://github.com/exlee/pikchr.pl/releases/tag/latest

Enrichment

Theme
Claude integrations and coding agents
Vertical
Horizontal
Function
Dev tools
Audience
Developer
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
gui for composing diagrams with tcl and prolog
Manually corrected
False

Could you build this?

Partial Embedding three completely distinct language interpreters/engines (Tcl, a Prolog engine, and Pikchr) and bridging them with a dynamic egui GUI in Rust goes beyond typical vibe coding boilerplate and quickly hits tricky FFI and multi-language data-piping bugs.

What it would actually take: A working system requires integrating Rust with embedded Tcl (via FFI or a pure-Rust interpreter), a logic engine (such as Scryer Prolog or a custom solver), and the Pikchr C/Rust renderer. Data structures must be cleanly marshaled across the boundaries: Tcl scripts generating relations for Prolog to solve, which output declarative diagrams rendered by Pikchr inside an egui/wgpu immediate-mode loop. This demands solid knowledge of multi-paradigm programming, FFI bindings, and custom interpreter execution pipelines.

Discussion

No comments on this launch.

Competitors

Other products that read as similar to this one — 62 launches clear the similarity bar, closest 8 shown.

Attention rank: #53 of 63 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 116 days after the earliest competitor.

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