https://www.youtube.com/c/NixCon/
https://www.youtube.com/channel/UCjqkNrQ8F3OhKSCfCgagWLg

2020
https://2020.nixcon.org/
https://www.youtube.com/playlist?list=PLgknCdxP89RcXpf7xLU7tuWXTOsL1rSHU
    d2
    https://www.youtube.com/watch?v=N9Dygq4Lz0c
    ! need to look
    d1
    https://www.youtube.com/watch?v=7sQa04olUA0
2019
https://2019.nixcon.org/
https://www.youtube.com/playlist?list=PLgknCdxP89Re9oFsLnAb5iLO0XG_rMuAo
2018
https://nixcon2018.org/
https://github.com/nix-community/nixcon2018.org
https://www.youtube.com/playlist?list=PLgknCdxP89ReJKWX3sthcsbBYsoihzSQX
2017
http://nixcon2017.org/
https://www.youtube.com/playlist?list=PLgknCdxP89ReQzhfKwMYjLdwWsc7us8ns