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3503 :: os.putEnv limited to application's scope?

• deooo (orginal) [2018-01-25T23:01:33+01:00] view original

  Hi there, I would like to permanently store some data in environment variables. I'm running the code with nim-0.17.2 on windows, and I'm fine storing data as user environment variables.

  The data is not visible outside of the nim application, and it's not available when I run the program for the second time. Is there something I need to know about os.putEnv? How do I permanently store an environment variable?

  import os
  
  var name = "name"
  var value = "value"
  echo "Currently: " & os.getEnv(name)
  echo "Set " & name & " to " & value
  os.putEnv(name, value)
  echo "Got: " & os.getEnv(name)
  Run

  
  > nim c -r repro.nim
  ...
  Currently:
  Set name to value
  Got: value
  > nim c -r repro.nim
  ...
  Currently:
  Set name to value
  Got: value
  Run

  btw, I get the same result when I replace every os with ospaths

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• boia01 (orginal) [2018-01-26T02:55:13+01:00] view original

  This may answer your question: https://stackoverflow.com/questions/3416638/set-environment-variables-in-c

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• jibal (orginal) [2018-01-26T06:41:49+01:00] view original

  On Windows, you can set an environment globally by modifying the registry: https://stackoverflow.com/questions/5246046/how-to-add-environment-variable-in-c

  Don't expect os.putEnv to do that ... it's not portable, and not what people expect.

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• deooo (orginal) [2018-01-29T06:33:48+01:00] view original

  Gotcha, thanks for pointing these links out.

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