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Google Antigravity meets Sigasi Visual HDL

When Google launched Gemini 3 this week also Antigravity was launched, an agentic development platform, evolving the IDE into the agent-first era. That got our attention and our VP Operations, Mark Christiaens had a first look at it.

It works

You haven’t been living under a rock, so you must have noticed the general availability of Google Gemini 3.  Less obvious is the accompanying release of Google Antigravity, Google’s “agentic development platform,” with deep integration with Gemini 3.  Sigasi, being in the IDE business, I immediately had to give Antigravity a spin.  Installers are available for all major development platforms, so Antigravity was up and running in no time on my trusty Fedora 43.

It turns out that Antigravity is heavily inspired by VS Code. Where it differs most noticeably is that the Copilot chatbot integration is replaced with Gemini 3 integration. Sigasi Visual HDL is designed to run in VS Code, so an obvious question is whether it runs nicely on Antigravity.  As it turns out, it does.

Antigravity vs Visual Studio Code

Antigravity is very similar to VS Code: you can use our existing VS Code extension unmodified in Antigravity. Download Sigasi Visual HDL here and manually install it. The relevant command is “Extensions: Install from VSIX…”. Sigasi customers can use their license key for VS Code. If you are not yet a customer, you can use our Community Edition mode for non-commercial projects or request a trial license for commercial projects.

Sigasi Visual HDL installs and runs just as smoothly in Antigravity as it does in VS Code.  Everything seems to work: projects are fully analyzed by our compiler, you can show diagrams, navigate, write documentation, etc., and you instantly get Gemini suggestions, side-by-side, with Sigasi’s suggestions.  Smooth.

Recommendation

The combination of Antigravity and Sigasi delivers a very nice synergy. Take, for instance, an SVH lint rule that checks whether design units are stored in VHDL or Verilog files with the corresponding name. If that rule is violated, SVH complains. Now, switch over to Antigravity: just strike the magic key combo, CTRL+SHIFT+., and Gemini reads the description of the violated rule and starts resolving the issue. An internal LLM dialog unfolds, ending with the module name being fixed up together with any instantiations of that module in the entire project. A click to accept Gemini’s changes, and now it’s SVH’s turn again: it checks that your project is still fine and confirms that the lint rule is respected. Very nice interplay between the two.

Anyway, my 2 cents: give Antigravity a try alongside Sigasi Visual HDL. I suspect you’ll be pleasantly surprised.

💬 Join the conversation on LinkedIn. What do you think? Will Antigravity turn out a true competitor for VS Code ? Feel free to leave your comments 

Try the Features Mark Is Talking About!

Request a free trial of our flagship Sigasi Visual HDL and discover how easy it is to save money and time on chip design both in VS Code as in Antigravity. We gladly give you a free demo on top to get you started!
Mark

2025-11-20, last modified on 2025-11-21