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{ stdenv, pkgs, lib, writeScript, python3, common-updater-scripts }:
{ packageName, attrPath ? packageName, versionPolicy ? "tagged", freeze ? false }:
let
python = python3.withPackages (p: [ p.requests p.libversion ]);
upperBoundFlag =
let
package = lib.attrByPath (lib.splitString "." attrPath) (throw "Cannot find attribute ‘${attrPath}’.") pkgs;
packageVersion = lib.getVersion package;
versionComponents = lib.versions.splitVersion packageVersion;
minorVersion = lib.versions.minor packageVersion;
minorAvailable = builtins.length versionComponents > 1 && builtins.match "[0-9]+" minorVersion != null;
nextMinor = builtins.fromJSON minorVersion + 1;
upperBound = "${lib.versions.major packageVersion}.${builtins.toString nextMinor}";
in lib.optionalString (freeze && minorAvailable) ''--upper-bound="${upperBound}"'';
updateScript = writeScript "gnome-update-script" ''
#!${stdenv.shell}
set -o errexit
package_name="$1"
attr_path="$2"
version_policy="$3"
PATH=${lib.makeBinPath [ common-updater-scripts python ]}
latest_tag=$(python "${./find-latest-version.py}" "$package_name" "$version_policy" "stable" ${upperBoundFlag})
update-source-version "$attr_path" "$latest_tag"
'';
in [ updateScript packageName attrPath versionPolicy ]
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