Installation¶

Requirements¶

• Python 3.11 (exactly; <3.12 is required by some IQM dependencies)
• pip >= 26.0
• Git
• Valid LEXIS platform credentials
• Access to LEXIS quantum resources

A virtual environment (venv or uv) is strongly recommended.

Install py4lexis¶

py4lexis handles LEXIS authentication and must be installed first:

pip3.11 install \
  --index-url https://opencode.it4i.eu/api/v4/projects/107/packages/pypi/simple \
  py4lexis

Install QaaS¶

From GitHub (stable):

pip3.11 install git+https://github.com/It4innovations/quantum-as-a-service.git@main

For development (editable install):

git clone https://github.com/It4innovations/quantum-as-a-service.git
cd quantum-as-a-service
pip3.11 install -e .

Optional extras¶

The iqm_backend extra is needed to run the backend service directly on IQM hardware nodes:

pip3.11 install "qaas[iqm_backend]"

Dependency overview¶