Local Nix Usage

Use this when you want to poke at the VM environment without booting the VM. It is handy for checking tools, examples, and PDK paths from your normal shell.

Get the source

git clone https://github.com/ZimengXiong/basicsvm.git
cd basicsvm

Enter the dev shell

scripts/dev-shell

The shell sets the paths the project expects:

BASICS_ROOT=$PWD/out/basics-root/opt/basics
PDK_ROOT=$BASICS_ROOT/pdks
BASICS_EXAMPLES=$PWD/examples

Build the main outputs

These are the main pieces that end up in the VM:

scripts/nix build .#basics-profile -o out/result-profile
scripts/nix build .#basics-templates -o out/result-templates
scripts/nix build .#basics-pdks -o out/result-pdks

Test the tools

Inside the dev shell, try a few tools:

openlane --version
openroad -version
yosys -V

You can also run the counter example without starting a VM:

cd examples/sky130-counter
openlane --pdk-root "$PDK_ROOT" --manual-pdk --pdk sky130A config.yaml