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nix-darwin/pkgs/nix-tools/darwin-version.sh

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2023-07-01 15:11:16 +00:00
#! @shell@
set -e
set -o pipefail
export PATH=@path@:$PATH
showSyntax() {
echo "darwin-version [--help|--darwin-revision|--nixpkgs-revision|--configuration-revision|--json]" >&2
}
case "$1" in
--help)
showSyntax
;;
--darwin-revision)
revision="$(jq --raw-output '.darwinRevision // "null"' < /run/current-system/darwin-version.json)"
if [[ "$revision" == "null" ]]; then
echo "$0: nix-darwin commit hash is unknown" >&2
exit 1
fi
echo "$revision"
;;
--nixpkgs-revision)
revision="$(jq --raw-output '.nixpkgsRevision // "null"' < /run/current-system/darwin-version.json)"
if [[ "$revision" == "null" ]]; then
echo "$0: Nixpkgs commit hash is unknown" >&2
exit 1
fi
echo "$revision"
;;
--configuration-revision)
revision="$(jq --raw-output '.configurationRevision // "null"' < /run/current-system/darwin-version.json)"
if [[ "$revision" == "null" ]]; then
echo "$0: configuration commit hash is unknown" >&2
exit 1
fi
echo "$revision"
;;
--json)
cat /run/current-system/darwin-version.json
;;
*)
label="$(jq --raw-output '.darwinLabel // "null"' < /run/current-system/darwin-version.json)"
if [[ "$label" == "null" ]]; then
showSyntax
exit 1
fi
echo "$label"
;;
esac