0.8.4 Fails on macOS El Capitan

[dom96]

Seems the way our Github Action builds choosenim ends up failing on older macOS (or at least I hope it's just old ones).

» choosenim 1.4.8
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /Users/dom/.nimble/bin/choosenim
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /Users/dom/.nimble/bin/choosenim
  Expected in: /usr/lib/libSystem.B.dylib

[1]    5081 trace trap  choosenim 1.4.8

Building portable binaries is tough :/

[elcritch]

Bummer, looks like adding the C flag -mmacosx-version-min=10.3 or similar might help with the older MacOS versions.

Some combination of:

• https://stackoverflow.com/questions/2923502/what-does-macosx-version-min-imply
• https://micro-manager.org/Building_Universal_Binaries_on_Mac_OS_X