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{lib, ...}: let
/*
Computes a reasonable value for the DNS serial number from the date of last change
and the iteration of that day.
# Type
mkSerial :: Number -> Number -> Number -> Number -> Number
# Arguments
year
: The year of the last change in the format YYYY.
month
: The month of the last change in the format MM.
day
: The day of the last change in the format DD.
iteration
: The number of change on that day. The format should be CC (assuming there are less
than 100 changes happening on a day) .
# Examples
mkSerial 2025 04 01 01
=> 2025040101
*/
mkSerial = year: month: day: iteration: let
n2 = lib.strings.fixedWidthNumber 2;
n4 = lib.strings.fixedWidthNumber 4;
in
lib.strings.toIntBase10 "${n4 year}${n2 month}${n2 day}${n2 iteration}";
in {
"vhack.eu" = import ./vhack.eu/zone.nix {inherit mkSerial;};
"j-schoeffel.de" = import ./j-schoeffel.de/zone.nix {inherit mkSerial;};
"jaki-schoeffel.de" = import ./jaki-schoeffel.de/zone.nix {inherit mkSerial;};
"jaki.li" = import ./jaki.li/zone.nix {inherit mkSerial;};
}
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