Luis Lavena
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luislavena.info
Luis Lavena
@luislavena.info
120 followers 34 following 58 posts
Creator of RubyInstaller for Windows, rake-compiler and many other Ruby tools for devs.
Opinions: Mine
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luislavena.info
Decided to fire up Claude Code with Opus 4.5 and try to re-implement a toy language in Crystal targeting WASM 3.0, gave it a few sources of inspiration and comes with really interesting feedback.
Comparison table from Claude Code terminal output evaluating three architectural approaches. The table has four columns: Aspect, A: Single Class, B: Scanner Wrapper, and C: State Machine. Six criteria are compared: Complexity (Low/Medium/High), Extensibility (Medium/High/High), Code clarity (Good/Good/Verbose), Testability (Good/Better with scanner testable separately/Good), Matches Zig style (Closest/dash/dash), and Overkill for Jasper? (No/Slightly/Yes). Option A (Single Class) shows the simplest approach with low complexity and closest match to Zig style, while Option C (State Machine) is the most complex and potentially overkill for the project.
November 26, 2025 at 6:21 PM
luislavena.info
When AI wants to test everything under the sun, you can just make it go back to the basic by asking "check how we are doing it right now"... KISS, baby. 😉
Terminal output showing 'Excellent discovery! Here's what I found:' followed by a section titled 'Current Testing Approach' explaining that SSH connections are NOT currently tested. Terminal output listing a testing approach with green checkmarks, describing benefits including: matches existing test strategy of unit tests and TCP-based e2e tests, simplest to implement, validates feature works through manual testing, doesn't require restructuring test infrastructure, and allows adding SSH tests later if needed.
October 19, 2025 at 2:01 PM
luislavena.info
I love that Forgejo (a fork of Gitea) is run under Codeberg's, a non-profit organization. The funny thing: they have a custom version that they deploy to run codeberg.org itself: codeberg.org/Codeberg-Inf...
Forgejo (Codeberg) Codeberg's fork of Forgejo, a self-hosted lightweight software forge. Some changes made to Forgejo's source code are: « Codeberg-specific themes « Codeberg's custom landing page « Codeberg's custom footer « Various optimizations necessary for running a large instance « Dirty hacks that we needed to deploy as soon as possible Some of our patches may be helpful if you wish to operate a large Forgejo instance. However, this repository as a whole contains a custom version of Forgejo that is explicitly not intended for private use. [Codeberg and Forgejo work together, but, as projects, they remain separate. For more information about Forgejo land its relationship with Codeberg, take a look at Forgejo's FAQ]
September 25, 2025 at 12:53 PM
luislavena.info
LLMs have a tendency to over engineer everything, even a simple random connection picker. A good reminder to question things and always seek for simpler solutions.
Screenshot showing output from Claude titled 'The Bottom Line' with the subtitle 'You're right to question this! For failover scenarios:' followed by three bullet points: 'Any randomization prevents hotspots', 'Fisher-Yates is overkill - we're not doing cryptography', and 'Simple rotation achieves the same practical goal'.
September 11, 2025 at 9:21 PM
luislavena.info
Is so much fun watch Claude Code implement some features when your feedback cycles are really fast. Thank you #crystallang for that 🚀
A Claude Code terminal interface showing a successful Bash command execution. The command "docker compose run --rm app -- crystal spec spec/routers/api/resource" is displayed followed by the output "Finished in 90.68 milliseconds"
July 20, 2025 at 5:46 PM
luislavena.info
We had that in our area17.com website since 2016/17, I need to check the repos from previous versions but I think dates back to 2010-12 (along with some other easter eggs) 😊

Good artists copy, great artists steal? 😆
June 13, 2025 at 7:16 AM
luislavena.info
After 3 months I had to restart a #crystallang service because it was eating too much memory! 52MB! Outrageous! Thankfully now it's back to it's regular memory usage!😅
Screenshot of systemctl status for sept-web.service showing the service running for 3 months and 6 days since March 1st, 2025, with PID 180, using 51.8M memory and 3min 17.124s CPU time. Screenshot of systemctl status for sept-web.service showing the service freshly restarted 15 minutes ago on June 7th, 2025, with new PID 72314, using 2.3M memory and 2.654s CPU time after the deployment update.
June 7, 2025 at 10:51 AM
luislavena.info
Currently working on a Inertia.js server-side implementation for #CrystalLanguage with no framework dependencies. Lot of rough edges and features to implement, but looks promising! 😊
March 30, 2025 at 6:51 PM
luislavena.info
Guess who is enjoying
@jetkvm.bsky.social
so much that is loading
@alpinelinux.bsky.social
on bare metal! 🤘
Screenshot of the JetKVM application showing a "Mount from JetKVM Storage" interface. The user is selecting an Alpine Linux ISO image. The image will be mounted as a CD/DVD
March 20, 2025 at 1:01 PM
luislavena.info
Ohai! long time since I ran this command from zero, with fresh eyes. I still remember installing v1.1 back in 2006 and build great stuff with it and all the versions that followed.

Lot of things changed, but the essence remains the same. Let's see how far I get this time without breaking things 😅
A terminal window showing version information for Ruby and Rails. The output displays Ruby version 3.3.6 (dated 2024-11-05) running on aarch64-linux-musl, and Rails version 8.0.1. The terminal prompt shows "/workspace #" and appears to be in the middle of executing a "rails new" command.
December 24, 2024 at 6:29 PM
luislavena.info
Claude is more open to tell you what is its system prompt.
December 20, 2024 at 3:27 PM
luislavena.info
So seems that lobste.rs decided to block users of Brave at nginx level, and now that I've read all what is being it, time to switch browsers! 😬

github.com/lobsters/lob...
Shows the output of curl command when mimic access to lobste.rs using Brave browser. shows error 403 with the following text: Blocking a cryptocurrency scam where the Brave browser pretended to be fundraising on behalf of a site without that site's knowledge or consent, then lied about funds beind held in escrow and kept them for itself. See https://github.com/lobsters/lobsters-ansible/issues/45 and https://github.com/lobsters/lobsters/issues/761 for details.
December 4, 2024 at 5:09 PM