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sequoia-nixbld-user-migration: Try to recreate all missing users instead of just first contiguous set

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This script mostly worked for me, but the nixbld6 and nixbld7 accounts for me were still missing. Looking at the script, it seems it's because of the `until` loop in step 2. It assumes only the first contiguous set of users would have disappeared. So 6 and 7 were never restored. This just runs through all 32 users and ensures they exist.

From: https://github.com/NixOS/nix/issues/10892#issuecomment-2820010714
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goodspark 2025-04-21 21:14:55 -07:00 • committed by GitHub
parent 155411397d
commit accf197261
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1 changed files with 7 additions and 5 deletions
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scripts/sequoia-nixbld-user-migration.sh
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@ -79,18 +79,20 @@ change_nixbld_uids(){
local existing_gid name next_id user_n local existing_gid name next_id user_n
((next_id=NEW_NIX_FIRST_BUILD_UID)) ((next_id=NEW_NIX_FIRST_BUILD_UID))
((user_n=1))
name="$(nix_user_n "$user_n")"
existing_gid="$(dsclattr "/Groups/nixbld" "PrimaryGroupID")" existing_gid="$(dsclattr "/Groups/nixbld" "PrimaryGroupID")"
# we know that we have *some* nixbld users, but macOS may have # we know that we have *some* nixbld users, but macOS may have
# already clobbered the first few users if this system has been # already clobbered the first few users if this system has been
# upgraded # upgraded. just try to recreate any missing ones.
echo "" echo ""
echo "Step 2: re-create missing early _nixbld# users." echo "Step 2: re-create missing _nixbld# users."
until dscl . read "/Users/$name" &>/dev/null; do for user_n in $(seq 1 32); do
name="$(nix_user_n "$user_n")"
if dscl . read "/Users/$name" &>/dev/null; then
continue
fi
# iterate for a clean ID # iterate for a clean ID
while id_unavailable "$next_id"; do while id_unavailable "$next_id"; do
((next_id++)) ((next_id++))