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Pyslvs is a Graphical User Interface (GUI) program written in Python. After installed Python launcher on your platform, the programming script can be compiled as an executable file.

In development state, Pyslvs including several dynamic libraries, which are need to be compiled first.

Python Versions

The module pyslvs-ui and its kernel pyslvs support pre-built libraries for at least three platforms.

The actual test and deployment platforms on CI/CD service:

Platforms (64-bit) Windows macOS Ubuntu
Python 3.8 O O O
Python 3.9 O O O

Other platforms must build from source and take care about the Python dependencies.

Editable Mode

Pyslvs-UI and its kernel are follow PEP 517 with pip tool. The package and dependencies can be installed through:

pip install -e .

Extra requirements can be installed through:

pip install -e .[scipy,slvs]

During developing, we can add a --no-deps option to update our package without to checking dependencies.

Ubuntu and macOS

It is recommended to use pyenv, which will be more easier to handle Python version instead of using system Python. So any operation about Python will not required sudo or --user option.

# Install supported version of Pyslvs
# The devlopment tools need to prepare first (like openssl, sqlite3)
pyenv install --list  # show all available versions
pyenv install 3.8.0
pyenv global 3.8.0
python --version  # Python 3.8.0
pip --version  # pip 19.2.2 from /home/user/.pyenv/versions/3.8.0/lib/python3.8/site-packages/pip (python 3.8)


Shell script tool: Git bash, MinGW or Msys 2.

Dummy name PYTHON_PATH is a location where your Python installed.

  • Use where python command to find the executable path directly.
  • The path might be ~\.pyenv\pyenv-win\versions\3.x.x if you installed by pyenv-win.
  • Virtual environment will be subject to the original location where you installed.

Install from official website.

REM Apply patches
platform\set_pycompiler.bat %PYTHON_PATH% msvc

Use Msys 2 and MinGW 64-bit, they also can be installed by Windows package manager Chocolatey.

REM The program path should be added in to environment variable (with administrator).
setx Path "C:\tools\msys64\usr\bin;%Path%" /M
# Install tools for Msys.
# Open the "mingw64.exe" shell.
choco install msys2

# Install MinGW
pacman -S mingw-w64-x86_64-gcc

# Install patch
pacman -S patch

# Run as an executable
./platform/set_pycompiler $PYTHON_PATH mingw32

Qt Designer (Development)

PyQt5 and its additional modules are now packed into the wheel file that most of platform can install them directly.

You need to get original Qt tools for development, which can be used to design the *.ui files, they are not the requirement if you just want to run Pyslvs.

Download and install Qt5 to get the tools.

sudo apt install qttools5-dev-tools
pip install pyqt5-tools

Fcitx QIMPanel Plugins on Linux

The Fcitx input method support is depanded on the plugins of PyQt. Copy the libraries from /usr/lib/x86_64-linux-gnu/qt5/plugins/ into python/site-packages/PyQt5/Qt/plugins/.

The plugins is platforminputcontexts/


Please note that some PyQt plugins are version depended, so the AppImage distributions are exclude these supports.

Kernels Requirement

About the development tools, please see Editable Mode.

Pyslvs Kernel

Pyslvs is the core library of this project. The version should be same as Pyslvs-UI.

It’s a critical dependency of Pyslvs-UI.

pip install pyslvs

Python-Solvespace Kernel

Python-Solvespace is a Python binding of Solvespace geometric constraint solver, which is an extra solver option of Pyslvs-UI.

It can be installed through two ways:

pip install pyslvs-ui[slvs]
pip install python-solvespace


Packing Pyslvs-UI into no Python environment.


Use shell command to pack into AppImage. Because of it is more suitable with PyQt module than PyInstaller.

After following operation, the executable file is in a folder named out. The script also install virtualenv automatically if no executable command.


Check the glibc version from ldd --version, it must be equal or higher than package’s.

Windows and macOS

Use PyInstaller with virtualenv, they will install automatically if no executable command.

After following operation, the executable file is in a folder named dist.


The Windows platform version requirement is same as the Python that packed.

On macOS, PyInstaller will generate two executable files (refer here).

# Run Unix-like executable file.
# Can not run it directly in Finder.
./executable --use-arguments-here

# Run macOS app file. (Can not use any arguments)
# Same as double click it in Finder.
open ./


The version of macOS must be equal or higher than executable’s.


This documentation is built by MkDocs.

If you want to demo the site in localhost, install MkDocs and the documentation requirements.

pip install mkdocs
pip install -r doc-requirements.txt

Start the local server:

mkdocs serve

The file mkdocs.yml and the contents of directory docs is a MkDocs project. The markdown files are the resources of this site.

Last update: February 12, 2021