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-rw-r--r--scripts/install-darwin-multi-user.sh17
1 files changed, 16 insertions, 1 deletions
diff --git a/scripts/install-darwin-multi-user.sh b/scripts/install-darwin-multi-user.sh
index f8d6c5e8f..32a12f2ee 100644
--- a/scripts/install-darwin-multi-user.sh
+++ b/scripts/install-darwin-multi-user.sh
@@ -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:
@@ -206,4 +217,8 @@ poly_prepare_to_install() {
EOF
setup_darwin_volume
fi
+
+ if [ "$(diskutil info -plist /nix | xmllint --xpath "(/plist/dict/key[text()='GlobalPermissionsEnabled'])/following-sibling::*[1]" -)" = "<false/>" ]; then
+ failure "This script needs a /nix volume with global permissions! This may require running sudo diskutil enableOwnership /nix."
+ fi
}