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Stickiness of architecture is a change from how Rosetta worked in the PowerPC to Intel transition: in macOS Big Sur child processes will prefer the arch of the

Stickiness of architecture is a change from how Rosetta worked in the PowerPC to Intel transition: in macOS Big Sur child processes will prefer the arch of the parent process if one is available to maximize compatibility. So for example launching x86_64 sh will cause a python invocation from that shell to also be x86_64. The "arch" utility is your escape hatch to switch the preferred arch for the spawned process and all of its children.

api 6y ago
Would be easy to make iTerm2 launch arch -x86_64 <shell>
- jen20 6y ago
  I haven't tried this (don't have an M1 to hand!) but: iterm2 -> Preferences -> Profiles -> General Change the "Login Shell" drop down to "Command" and then enter `arch -x86_64 /usr/local/bin/zsh` or whatever your shell is.
  - 1f60c 6y ago
    Would `arch -x86_64 $SHELL` work?
    - cdalar 6y ago
      Just tried and it works :) .. Nice.
    - dormento 6y ago
      In theory yes, since it inherits the shell env from the parent. Haven't got the $$$ to test though. EDIT: you could also craft an oneliner if $SHELL is not defined, something like: `ps -T $$ | awk 'NR==2{print $NF}' | arch -x86_64 $0`