"ShellExitHook"?

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1

Hello, is there such a thing as shellExitHook which runs when I exit a shell? (On a best effort basis, or at least when I cleanly exit a nix-shell?)

Currently I do:

			shellHook = ''
				./shellHook.sh
				trap "shellExitHook.sh" EXIT
			'';
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2

not to my knowledge. And looking at pkgs/build-support/mkshell/default.nix there doesn’t appear to be. trap seems like an interesting possibility.

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3

it’s definitely possible!

nix-shell -E '
    with import <nixpkgs> {}; mkShell { 
      shellHook = "PS0=$PS1 bash --rcfile ${writeText "rcfile" "export PS1=$PS0"} -i; 
         echo EXIT HOOK CODE HERE; 
         exit
      ";
 }'

but trap is also fine.

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