2006, to be accurate. https://researchr.org/publication/Dolstra2006 https://researchr.org/publication/Dolstra2006 More recently there is an attempt to run Nic

2006, to be accurate. https://researchr.org/publication/Dolstra2006 https://researchr.org/publication/Dolstra2006 More recently there is an attempt to run Nickel as a successor for Nix: https://www.tweag.io/blog/2020-10-22-nickel-open-sourcing/ https://www.tweag.io/blog/2020-10-22-nickel-open-sourcing/