19 lines
633 B
Nix
19 lines
633 B
Nix
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{ theFlake, ... }:
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let
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rev = if theFlake ? rev then theFlake.rev
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else throw ("Refusing to build from a dirty Git tree!");
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in {
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# Save the commit of the config in /etc/configrev
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environment.etc.configrev.text = rev + "\n";
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# Keep a log with the config over time
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system.activationScripts.configRevLog.text = ''
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BOOTED=$(cat /run/booted-system/etc/configrev 2>/dev/null || echo unknown)
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CURRENT=$(cat /run/current-system/etc/configrev 2>/dev/null || echo unknown)
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NEXT=${rev}
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DATENOW=$(date --iso-8601=seconds)
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echo "$DATENOW booted=$BOOTED current=$CURRENT next=$NEXT" >> /var/configrev.log
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'';
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}
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