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bind-mount attempt

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randogoth 2026-01-14 18:19:46 +02:00
parent 29beb6408f
commit c2eb4e0bf6
7 changed files with 43 additions and 32 deletions
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32
files/system/usr/bin/mount-nix.sh Executable file
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@ -0,0 +1,32 @@
#!/usr/bin/env bash
set -euo pipefail
# Bind-mount /var/lib/nix-store to /nix.
# If /var/lib/nix-store is empty, seed it from the baked store in /usr/share/nix-store.
mkdir -p /usr/share/nix-store /var/lib/nix-store /nix
copy_seed_store() {
if command -v rsync >/dev/null 2>&1; then
rsync -aH --delete /usr/share/nix-store/ /var/lib/nix-store/
else
cp -a /usr/share/nix-store/. /var/lib/nix-store/
fi
}
if ! mountpoint -q /nix; then
if [ -z "$(ls -A /var/lib/nix-store 2>/dev/null)" ] && compgen -G "/usr/share/nix-store/*" >/dev/null; then
copy_seed_store
fi
mount --bind /var/lib/nix-store /nix
mount -o remount,bind,exec /nix
# Ensure daemon paths exist and labels are sane.
if command -v systemd-tmpfiles >/dev/null 2>&1; then
systemd-tmpfiles --create /usr/lib/tmpfiles.d/nix-daemon.conf
fi
if command -v restorecon >/dev/null 2>&1; then
restorecon -RF /var/lib/nix-store /nix || true
fi
fi