Installation
Dependencies
Follow the instructions exactly as stated below to avoid issues.
You should be using a *nix environment (Linux, Mac OS, WSL if using Windows) with bash and have the following installed on your system:
- Python 3.10.7
- dfx 0.19.0
- Python VS Code Extension
Python 3.10.7
It is highly recommended to install Python 3.10.7 using pyenv. To do so, use the pyenv installer as shown below:
# install pyenv
curl https://pyenv.run | bash
# install Python 3.10.7
~/.pyenv/bin/pyenv install 3.10.7
dfx
Run the following command to install dfx 0.19.0:
DFX_VERSION=0.19.0 sh -ci "$(curl -fsSL https://sdk.dfinity.org/install.sh)"
If after trying to run dfx commands you encounter an error such as dfx: command not found, you might need to add $HOME/bin to your path. Here's an example of doing this in your .bashrc:
echo 'export PATH="$PATH:$HOME/bin"' >> "$HOME/.bashrc"
Python VS Code Extension
It is highly recommended to use VS Code and to install the Microsoft Python extension to get full type checking support from within the editor:
Extension
VS Code -> Preferences -> Extensions -> Search for Python by Microsoft and install it
Set python.analysis.typeCheckingMode
Set the setting python.analysis.typeCheckingMode to strict:
VS Code -> Preferences -> Settings -> Search for python.analysis.typeCheckingMode and set it to strict
Common installation issues
Ubuntu
Error:
linker cc not found
Resolution:
sudo apt install build-essential
Error:
is cmake not installed?
Resolution:
sudo apt install cmake
Error:
ERROR: The Python ssl extension was not compiled. Missing the OpenSSL lib
Resolution:
You may have the right version of open ssl but you might be missing libssl-dev
sudo apt-get install libssl-dev