18 lines
771 B
Plaintext
18 lines
771 B
Plaintext
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;; -*- mode: Lisp; -*-
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;; This cannot be let-bound within `job'.
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(define currency-file (string-append (getenv "HOME") "/.cache/currency.units"))
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(job
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(lambda (current-time)
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(let* ((seconds-in-a-day (* 60 60 24))
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(currency-time (stat:mtime (stat currency-file))))
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(if (< currency-time (- current-time seconds-in-a-day))
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(next-second)
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;; TODO: The following does not work while it should. Report upstream.
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;; (next-hour-from (next-day) (list (tm:hour (localtime (current-time)))))
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(+ (next-second) (- 86400 (- current-time currency-time))))))
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;; A string is nicer than Scheme code for `mcron --schedule' output.
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;; Other we could return '(system* "units_cur" currency-file)
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(string-append "units_cur " currency-file))
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