❄️ nix-eda

A flake containing a collection of Nix derivations for EDA (Electronic Design Automation) utilities, curated by Efabless Corporation.

nix-eda is not affiliated with the NixOS Foundation or any of its affiliates.

We compile and cache the tools for the following platforms:

Platform	Nix System Name
Linux (x86_64)	x86_64-linux
Linux (aarch64)	aarch64-linux
macOS (x86_64)	x86_64-darwin
macOS (arm64)	aarch64-darwin

Tools Included

• Magic
• Netgen
• ngspice
• KLayout
  • (+ Python module that can be accessed programmatically)
• Surelog
• Verilator
• Xschem
• Yosys
  • (+ some plugins that can be accessed programmatically)

Usage

Directly

Before anything, if you haven't installed Nix using the OpenLane 2 documentation, make sure that:

1. You have Nix installed.
   • If not, see OpenLane 2's documentation on Nix-based installation linked above.
2. If you already have Nix installed, you have enabled the experimental Nix features flakes and nix-command.
   • If not, see this this guide for more info.
3. You have the OpenLane Cachix enabled.
   • If not, see the "If you already have Nix set up…" portion of the Openlane 2 installation documentation linked above.

If you satisfy these conditions, you may use any of the tools by creating a Terminal shell with the tool as follows:

nix shell github:efabless/nix-eda#magic

then simply invoking magic. If you correctly set up the OpenLane cachix, you won't have to build anything, but if you didn't, your computer will attempt to build it.

You may also create a shell with multiple tools as follows:

nix shell github:efabless/nix-eda#{magic,xschem}

As a dependency

To be documented, but you may refer to the nix-eda branch of OpenLane 2 as an example of how to use this repository as a dependency. OpenLane 2 uses this repository in addition to a number of other tools to provide a full digital design environment.

⚖️ License

The Apache License, version 2.0. See 'License'.