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fix install on macOS monterey

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This commit is contained in:
Travis A. Everett 2021-09-21 13:38:29 -05:00
parent c81f9761cc
commit 033081aec2
1 changed files with 12 additions and 1 deletions
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13
scripts/install-darwin-multi-user.sh
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@ -13,11 +13,22 @@ NIX_BUILD_USER_NAME_TEMPLATE="_nixbld%d"
read_only_root() {
# this touch command ~should~ always produce an error
# as of this change I confirmed /usr/bin/touch emits:
# "touch: /: Operation not permitted" Monterey
# "touch: /: Read-only file system" Catalina+ and Big Sur
# "touch: /: Permission denied" Mojave
# (not matching prefix for compat w/ coreutils touch in case using
# an explicit path causes problems; its prefix differs)
[[ "$(/usr/bin/touch / 2>&1)" = *"Read-only file system" ]]
case "$(/usr/bin/touch / 2>&1)" in
*"Read-only file system") # Catalina, Big Sur
return 0
;;
*"Operation not permitted") # Monterey
return 0
;;
*)
return 1
;;
esac
# Avoiding the slow semantic way to get this information (~330ms vs ~8ms)
# unless using touch causes problems. Just in case, that approach is: