The #EuropeanCommission supports multi-country projects with a programme called European Digital Infrastructure Consortium (EDIC). On 13 June already, France mentioned the "Digital Commons" #EDIC currently in the making, which in principle could also support a sovereign operating system such as #EU_OS.
The EDIC should be launched this summer with France 🇫🇷, Germany 🇩🇪, Netherlands 🇳🇱 , Italy 🇮🇹 and Slovenia 🇸🇮! 🥳
Source (in 🇫🇷): https://www.numerique.gouv.fr/sinformer/espace-presse/cigref-resilience-numerique-france-allemagne-paysbas-eurostack/