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13197 :: "const" and "times"

• Fiend (orginal) [2025-07-12T16:32:12+02:00] view original

  I'm sorry if it's a dumb question but I couldn't find an answer.

  
  import times
  
  const current_year= $now().year
  
  echo current_year
  Run

  
  c:\nim\nim-2.2.4\lib\system\fatal.nim(53, 5) Error: unhandled exception: implemented in the vm [AssertionDefect]
  Run

  I need to get the year during compilation for my project. Here's my current workaround:

  
  when defined(windows):
      const current_year = staticExec("powershell -command \"Get-Date -Format yyyy\"")
  else:
      const current_year = "2025"
  Run

  But it doesn't look pretty. Also regular expressions don't seem to work during compile time. Is there something I can do about it? Maybe a compiler flag or something...

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• demotomohiro (orginal) [2025-07-12T16:45:45+02:00] view original

  There are CompileDate and CompileTime const in system module: https://nim-lang.org/docs/system.html#CompileDate

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• Fiend (orginal) [2025-07-12T17:05:02+02:00] view original

  
  const current_year = CompileDate[0..3]
  Run

  Thanks! It solves my problem.

  I guess Nim's VM has its limitations.

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