Reticulum is a production-ready full network stack. Cryptography and anonymity are first-class citizens there. It is transport-layer agnostic, not just tailored for LoRa. I like it, but is see two main problems that prevent the wide adaption, and they are related:
1. The library is written in Python. If you want to design phone apps, Linux server daemons in C, or embedded software (for example for the Lilygo T-Deck) this is a bad choice. Somehow doable (execpt for embedded), but no fun. A small lib with C API and C ABI would be better.
2. Most of the end user software has a horrible UI. But it gets better with software like the Android messenger Columba (https://github.com/torlando-tech/columba).
If we would solve 1., we would have more end user software.
Currently, there are 4 project who try to solve 1. by writing a Reticulum lib with a low-level language, everybody does it in their favorite language and on their own, of course: C++, Zig, Rust, Go
The Rust implementation from Beechat seems the most mature. But I did not see it used in the wild, outside of Beechat's own devices.
I took a deeper dive in Reticulum-rs. It is std. It implements 20% of Reticulum functionality. And it has 2 major protocol incompatibilities (like a different size for the MTU / Maximum Transfer Unit).
It looks like a quick vibe coded hack to implement a subset, tailored only for Beechat's own devices.
If someone would want to implement a full no_std Reticulum lib, they would need to start from scratch.
My surprise level at your finding is low. I regularly start from scratch in embedded rust for precisely this scenario. A typical response is "Why not use [reticulum-rs] etc.". Your elegant description could be described with the "But we have McDonald's at home" meme.
There are many cases where a library will be posted online, be mentioned in a blog post, and demonstrated in a demonstration workflow. If you try to use it for practical means, it becomes immediately clear it is "totaled" or easier to start over than fix or adapt it.
1. The library is written in Python. If you want to design phone apps, Linux server daemons in C, or embedded software (for example for the Lilygo T-Deck) this is a bad choice. Somehow doable (execpt for embedded), but no fun. A small lib with C API and C ABI would be better.
2. Most of the end user software has a horrible UI. But it gets better with software like the Android messenger Columba (https://github.com/torlando-tech/columba).
If we would solve 1., we would have more end user software.
Currently, there are 4 project who try to solve 1. by writing a Reticulum lib with a low-level language, everybody does it in their favorite language and on their own, of course: C++, Zig, Rust, Go
The Rust implementation from Beechat seems the most mature. But I did not see it used in the wild, outside of Beechat's own devices.