Aleix Boné cfb0461ab2
Use extra- for substituters and trusted-public-keys
From the nix manual:

    A configuration setting usually overrides any previous value.
    However, for  settings  that  take  a  list  of items, you can
    prefix the name of the setting by extra- to append to the previous
    value.
2025-06-03 17:59:17 +02:00
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