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Selectors, Error: undeclared field: 'OSErrorCode' on macOS #11124

dylanagreen opened this issue Apr 27, 2019 · 1 comment


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commented Apr 27, 2019

The following code causes an undeclared field error on macOS.

import selectors

var selector: Selector[int] = newSelector[int]()
var events = select(selector, 1)

The error:

prob.nim(4, 20) template/generic instantiation of `select` from here
../../.choosenim/toolchains/nim-#devel/lib/pure/ioselects/ioselectors_kqueue.nim(589, 25) template/generic instantiation of `selectInto` from here
../../.choosenim/toolchains/nim-#devel/lib/pure/ioselects/ioselectors_kqueue.nim(503, 37) Error: undeclared field: 'OSErrorCode' for type [declared in ../../.choosenim/toolchains/nim-#devel/lib/system.nim(26, 3)]  

Similarly to #7667, importing os at the top of the file is a workaround.

This is the output of nim --version:

Nim Compiler Version 0.19.9 [MacOSX: amd64]
Compiled at 2019-04-20
Copyright (c) 2006-2019 by Andreas Rumpf

active boot switches: -d:release

@dom96 dom96 added the High Priority label Apr 27, 2019


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commented Apr 27, 2019

Marking this high pri because I've experienced it myself and seen it reappear a couple of times now. This shouldn't still be happening.

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