Installation
Warning
The following instructions are a work-in-progress and may not be entirely up to date.
Squishy is a python application that can be installed via pip, either from the git repository or via a wheel package.
System Requirements
Squishy is officially supported on most Linux distributions, the primary one being Arch Linux and variants there of (Manjaro, etc.). However other Linux distributions are supported as well.
Support for Microsoft Windows is preliminary, and due to lack of testing and development resources official support is currently not possible. But effort to make it as painless as possible to use on this platform is in-progress.
Support for Apple macOS is also unofficial, however due to its similarity to Linux and Unix-like operating systems, using Squishy on macOS should be just as painless as it is on Linux. Official support for macOS and other BSD-Family operating systems is planned.
Regardless of the operating system, there are some core dependencies that Squishy requires. This includes Python >= 3.8, Yosys >= 0.10, and nextpnr >= 0.4.
Squishy has been tested with CPython, but might possibly run under PyPy.
Installing Prerequisites
Prior to installing Squishy, you must install all of its prerequisites and requirements.
Installing Python
First off, install python and pip onto your system if the’re not there already. It is also recommended to upgrade pip if not already to ensure all the steps work as expected.
Arch Linux
$ sudo pacman -S python python-pip
Other Linux
Warning
These instructions may be incorrect or incomplete!
For Debian based systems, use apt to install python3 and python3-pip
$ sudo apt install python3 python3-pip
For Fedora and other dnf based systems,
$ sudo dnf install python3 python3-pip
Windows
Warning
These instructions may be incorrect or incomplete!
Download the latest Python installer from the python downloads page.
Follow the instructions and ensure that the installer installs pip and puts the python executable in your %PATH%
At this point, you may want to create a virtual environment for installing Squishy into:
$ python -m venv squishy.venv
Note
If your python install doesn’t have the venv module by default, then you will need to also install the python virtualenv package
You can then activate the virtual environment with:
Arch Linux
$ . squishy.venv/bin/activate
Other Linux
$ . squishy.venv/bin/activate
macOS
$ . squishy.venv/bin/activate
Windows
$ call squishy.venv/Scripts/activate.bat
Installing Yosys and nextpnr
Next, you need to install yosys and nextpnr onto your system if it is not there already.
Native Install
The next option is to do a native install of the toolchain.
Arch Linux
On Arch Linux and Arch-likes, you can install nightly packages which are located in the AUR with an AUR helper or using makepkg directly.
Via an AUR helper like yay
$ yay -S yosys-nightly nextpnr-ice40-nightly nextpnr-ecp5-nightly
Via makepkg directly
$ git clone https://aur.archlinux.org/yosys-nightly.git
$ git clone https://aur.archlinux.org/prjtrellis-nightly.git
$ git clone https://aur.archlinux.org/icestorm-nightly.git
$ git clone https://aur.archlinux.org/nextpnr-ecp5-nightly.git
$ git clone https://aur.archlinux.org/nextpnr-ice40-nightly.git
$ (cd yosys-nightly && makepkg -sic)
$ (cd prjtrellis-nightly && makepkg -sic)
$ (cd icestorm-nightly && makepkg -sic)
$ (cd nextpnr-ecp5-nightly && makepkg -sic)
$ (cd nextpnr-ice40-nightly && makepkg -sic)
Other Linux
Warning
These instructions may be incorrect or incomplete!
With other Linux distributions, it is recommended to use the OSS Cad Suite nightly build. It provides a full environment of all the tools needed built on a nightly basis.
Simply download the latest release for your architecture, extract it to a good home, and then add it to your $PATH
$ curl -LOJ https://github.com/YosysHQ/oss-cad-suite-build/releases/download/2022-04-26/oss-cad-suite-linux-x64-20220426.tgz
$ tar xfv oss-cad-suite-linux-x64-20220426.tgz
$ export PATH="`pwd`/oss-cad-suite/bin:$PATH"
macOS
For macOS systems, it is recommended to use the YoWASP distribution of the toolchain. However if you want to use the native tools, and you are using an Intel based Mac, then the OSS Cad Suite has nightly builds for x86_64 versions of Darwin.
Simply download the latest release for your architecture, extract it to a good home, and then add it to your $PATH
$ curl -LOJ https://github.com/YosysHQ/oss-cad-suite-build/releases/download/2022-04-26/oss-cad-suite-darwin-x64-20220426.tgz
$ tar xfv oss-cad-suite-darwin-x64-20220426.tgz
$ export PATH="`pwd`/oss-cad-suite/bin:$PATH"
Windows
Warning
These instructions may be incorrect or incomplete!
For Windows systems, it is recommended to use the YoWASP distribution of the toolchain. However if you want to use the native tools, and you are using an Intel based PC, then the OSS Cad Suite has nightly builds for x86_64 versions of Windows.
Simply download the latest release for your architecture, extract it to a good home, and then add it to your %PATH%
$ call %cd%\oss-cad-suite\environment.bat
Installing Squishy
Note
Due to some of squishy’s dependencies, we can not publish a PyPi package at the moment.
Once all of the prerequisites are installed, you can finally install squishy into the virtual environment like so:
(squishy.venv) $ pip install 'squishy @ git+https://github.com/lethalbit/squishy.git'
After that, check to make sure you have the squishy command:
(squishy.venv) $ squishy --help
Now you can view the Getting Started page and start to use Squishy.