71 lines
2.3 KiB
Nix
71 lines
2.3 KiB
Nix
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{ depot, lib, ... }:
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let
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# TODO(sterni): find a better place for this: is dot time //fun?
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# get the email address of a depot user from //ops/users
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findEmail = user:
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let
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res = builtins.filter ({ username, ... }: username == user) depot.ops.users;
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len = builtins.length res;
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in
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if len == 1
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then (builtins.head res).email
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else builtins.throw "findEmail: got ${toString len} results instead of 1";
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# dot-time(7) man page, ported from dotti.me
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dot-time = rec {
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name = "dot-time";
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section = 7;
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content = ''
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.Dd $Mdocdate$
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.Dt ${lib.toUpper name} ${toString section}
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.Os
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.Sh NAME
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.Nm ${name}
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.Nd a universal convention for conveying time
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.Sh DESCRIPTION
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For those of us who travel often or coordinate across many timezones,
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working with local time is frequently impractical.
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ISO8601, in all its wisdom, allows for time zone designators,
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but still represents the hours and minutes as local time,
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thus making it inconvenient for quickly comparing timestamps from
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different locations.
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.Pp
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Dot time instead uses UTC for all date, hour, and minute indications,
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and while it allows for time zone designators, they are optional
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information that can be dropped without changing the indicated time.
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It uses an alternate hour separator to make it easy to distinguish from
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regular ISO8601.
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When a time zone designator is provided, one can easily obtain
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the matching local time by adding the UTC offset to the UTC time.
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.Sh EXAMPLES
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These timestamps all represent the same point in time.
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.TS
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allbox tab(|);
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lb | lb | lb
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l | l | l.
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dot time|ISO8601|RFC3339
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2019-06-19T22·13-04|2019-06-19T18:13-04|2019-06-19T18:13:00-04:00
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2019-06-19T22·13+00|2019-06-19T22:13+00|2019-06-19T22:13:00Z
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2019-06-19T22·13+02|2019-06-20T00:13+02|2019-06-20T00:13:00+02:00
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.TE
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.Sh SEE ALSO
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.Lk https://dotti.me dotti.me
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.Sh AUTHORS
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.An -nosplit
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.Sy dot time
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has been proposed and documented by
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.An edef Aq Mt ${findEmail "edef"}
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and ported to
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.Xr mdoc 7
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by
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.An sterni Aq Mt ${findEmail "sterni"} .
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'';
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};
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in
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depot.nix.buildManPages "dot-time" { } [
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dot-time
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]
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