Lucas Mendelowski
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lucas.mendelowski.com
Lucas Mendelowski
@lucas.mendelowski.com
Developer focused on building web-applications.

KRUG (Kraków Ruby Users Grup) coorganizer.
Everyone is talking about #omarchy , but if you are not ready to switch to Arch or too comfortable with GNOME, you can try my opinionated tiling setup for GNOME. It's distro-agnostic, so it works any distro:

github.com/lcmen/omagnome

Enjoy!
GitHub - lcmen/omagnome: Carefuly curated and opinionated Gnome setup that I use on my Linux machines
Carefuly curated and opinionated Gnome setup that I use on my Linux machines - lcmen/omagnome
github.com
November 1, 2025 at 7:43 PM
KRUG #4 is back! 💎

Join us on Oct 28 at 18:00 at Zendesk Kraków.

We’ve got a great lineup of talks - from the Decider Pattern, through a PostgreSQL-to-SQLite migration, to lessons on managing gem upgrades and building mobile apps the Rails way.

RSVP 👉 luma.com/se3qppbl

See you there! 🚀
KRUG #4 2025 · Luma
Hello Ruby enthusiasts, We’re back! After postponing the September meetup, we’re thrilled to announce the rescheduled KRUG #4, powered by Zendesk. Zendesk is…
luma.com
October 17, 2025 at 4:33 PM
What's the best way to learn about some new concept? Building a project using it! Recently, I've been interested in MCP servers, so I built one with Ruby (and `fast-mcp` gem). It allows you to query HackerNews (as what else can you do on Friday 😅).

Code: github.com/lcmen/hn-mcp/
GitHub - lcmen/hn-mcp: HackerNews MCP server built with Ruby
HackerNews MCP server built with Ruby. Contribute to lcmen/hn-mcp development by creating an account on GitHub.
github.com
August 8, 2025 at 2:51 PM
Join our next KRUG meetup, powered by @rubycentral.org & Fastly, with venue support from Forte Digital

Talks:

- Michał Papis: Code UnCov & Pluginator
- @josevalim.bsky.social: Livebook - where Web, AI, and Concurrency meet

🗓️ June 10, 18:00
📍 Forte Space, Krupnicza 3, Kraków

🔗 RSVP lu.ma/0852jl2w
June 3, 2025 at 4:45 PM
Another idea inspired by the Ash Framework book: my journey into the pin operator and macros in #Elixir.

Check it out: www.mendelowski.com/blog/2025/03...

I'm not an Elixir expert, so I welcome feedback from more experienced Elixir folks. Hope you enjoy it!
Understanding the Pin Operator and Macros in Elixir - Lucas Mendelowski
Understanding the Pin Operator and Macros in Elixir by building custom DSL
www.mendelowski.com
March 31, 2025 at 5:58 PM
Hey @chastell.net, @tomash.eu mentioned that you were able to configure AI assistant in Vim (NeoVim?). Can you share your setup? Were you able to replicate VSCode / Cursor experience in applying changes from chat window to source files (Composer like behavior)?
March 6, 2025 at 4:10 PM
Recently, I started reading the "Ash Framework" book. While building the example app, I spotted an area for improvement - leading to my first-ever contribution to the 🧪 Elixir ecosystem!

My changes to @ash-hq.org and `ash_postgres` are ready for release! 🚀

#MyElixirStatus
February 17, 2025 at 7:28 PM
KRUG #1 2025 is here! Featuring three fantastic talks.

The event powered by Zendesk and serving as the unofficial kickoff to Ruby Community Conference.

📅 Feb 27, 2025 – 17:30
📍 Marii Konopnickiej 29, Kraków
🔗 More details here: lu.ma/dow2zgc5

Come for the talks, stay for the community 🚀!
KRUG #1 2025 · Luma
Hello Ruby Enthusiasts! We're kicking off 2025 with a high-caliber Kraków Ruby Users Group (KRUG) meetup, featuring three fantastic talks you don't want to…
lu.ma
February 13, 2025 at 5:00 PM
Wow... What a surprise! Look what I found in my mailbox.
Thank you so much, @inazarova.bsky.social !
That’s so kind of you.

PS. It’s also my birthday today, so you couldn’t have picked a better day!
January 2, 2025 at 3:17 PM
If one of your 2025 resolutions is to explore modern front-end solutions for #rails, I’ve got you covered. Check out my blog post and repo comparing #Hotwire, #htmx , #unpolyjs and #inertiajs.

github.com/lcmen/hotwir...
www.mendelowski.com/blog/2024/11...
GitHub - lcmen/hotwire-htmx-unpoly: Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly
Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly - lcmen/hotwire-htmx-unpoly
github.com
December 31, 2024 at 11:57 AM
I know that no one asked for it, but I've added #inertiajs to the mix (with React without JSX transpilation!). Compare it with #hotwire, #htmx, and #unpoly.

The same principle as before: single controller, no build, importmap, and propshaft.
Hey everyone! It's my first post here.

Just want to share that recently, I've built a simple TODO app with Rails to compare #hotwire #htmx and #unpoly. It follows progressive enhancement spirit (the same controller is used for all the variants). You can check it here: github.com/lcmen/hotwir...
GitHub - lcmen/hotwire-htmx-unpoly: Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly
Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly - lcmen/hotwire-htmx-unpoly
github.com
December 29, 2024 at 4:32 PM
Secure custom domains with Caddy

www.honeybadger.io/blog/secure-...
December 6, 2024 at 6:25 PM
@solnic.dev quick questions about your justcrosspost.app!

1. Which AI tool were you using for HTML templates? Was it consistent in design across different elements?
2 Are you using any unique Elixir/Phoenix features that would be tough to achieve in Ruby/Rails?

Thanks!
December 5, 2024 at 6:37 PM
Some people asked me about my experience with
#hotwire, #htmx and #unpoly while building the app.

I summarized my insights in a follow-up blog post: www.mendelowski.com/blog/2024/11...
Hey everyone! It's my first post here.

Just want to share that recently, I've built a simple TODO app with Rails to compare #hotwire #htmx and #unpoly. It follows progressive enhancement spirit (the same controller is used for all the variants). You can check it here: github.com/lcmen/hotwir...
GitHub - lcmen/hotwire-htmx-unpoly: Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly
Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly - lcmen/hotwire-htmx-unpoly
github.com
November 28, 2024 at 6:00 PM
Hey everyone! It's my first post here.

Just want to share that recently, I've built a simple TODO app with Rails to compare #hotwire #htmx and #unpoly. It follows progressive enhancement spirit (the same controller is used for all the variants). You can check it here: github.com/lcmen/hotwir...
GitHub - lcmen/hotwire-htmx-unpoly: Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly
Simple TODO application built with Rails to compare Hotwire, HTMX and Unpoly - lcmen/hotwire-htmx-unpoly
github.com
November 19, 2024 at 5:15 PM