"Switzerland has taken a major step forward with its 'Federal Law on the Use of Electronic Means for the Fulfillment of Government Tasks' (EMBAG). [...]
This new law requires all public bodies to disclose the source code of software developed by or for them unless third-party rights or security concerns prevent it.”
https://www.zdnet.com/article/switzerland-now-requires-all-government-software-to-be-open-source/