nixos-rebuild: make 'pull' fail in case it did not pull anything.
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@ -125,9 +125,13 @@ fi
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# Pull the manifests defined in the configuration (the "manifests"
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# attribute). Wonderfully hacky.
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if [ -n "$pullManifest" -o "$action" = pull ]; then
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set -o pipefail
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manifests=$(nix-instantiate --eval-only --xml --strict '<nixos>' -A manifests \
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| grep '<string' | sed 's^.*"\(.*\)".*^\1^g')
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set -o nopipefail
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[ "$action" = pull -a $? -ne 0 ] && exit 1
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mkdir -p /nix/var/nix/channel-cache
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for i in $manifests; do
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NIX_DOWNLOAD_CACHE=/nix/var/nix/channel-cache nix-pull $i || true
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