8528527e06
this is needed if the host is updated to a newer generation that doesn't require a reboot or is reverted to the current generation
39 lines
1.3 KiB
Bash
39 lines
1.3 KiB
Bash
arch=$(uname -m)
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hostname=$(uname -n)
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p=$(curl -L https://buildbot.nix-community.org/nix-outputs/nix-community/infra/master/"$arch"-linux.host-"$hostname")
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cancel_reboot() {
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if [[ -e /run/systemd/shutdown/scheduled ]]; then
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shutdown -c
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kexec --unload
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fi
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}
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if [[ "$(readlink /run/current-system)" == "$p" ]]; then
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cancel_reboot
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exit 0
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fi
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nix-store --option narinfo-cache-negative-ttl 0 --realise "$p"
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nix-env --profile /nix/var/nix/profiles/system --set "$p"
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booted="$(readlink /run/booted-system/{initrd,kernel,kernel-modules} && cat /run/booted-system/kernel-params)"
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built="$(readlink "$p"/{initrd,kernel,kernel-modules} && cat "$p"/kernel-params)"
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if [[ $booted != "$built" ]]; then
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if [[ -e /run/current-system ]]; then
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echo "--- diff to current-system"
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nvd diff /run/current-system "$p"
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echo "---"
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fi
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/nix/var/nix/profiles/system/bin/switch-to-configuration boot
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# don't use kexec if system is virtualized, reboots are fast enough
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if ! systemd-detect-virt -q; then
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kexec --load "$p"/kernel --initrd="$p"/initrd --append="$(cat "$p"/kernel-params) init=$p/init"
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fi
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if [[ ! -e /run/systemd/shutdown/scheduled ]]; then
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shutdown -r "+$(shuf -i 5-60 -n 1)"
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fi
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else
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cancel_reboot
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/nix/var/nix/profiles/system/bin/switch-to-configuration switch
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fi
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