luci-app-package-manager: Unable to execute apk update command: SyntaxError: Unexpected end of JSON input

[dhdaines]

Is there an existing issue for this?

• I have searched among all existing issues (including closed issues)

screenshots or captures

Actual behaviour

NOTE: This is most likely the same problem as #6569 but many things have changed since 2023, and I did not have this issue with 24.10.2 and opkg, so it is probably apk related.

1. Try to do literally anything at all from the LuCI package management interface
2. Get this error
3. Operation apparently succeeds nonetheless?!

Expected behaviour

1. I should be able to install packages, update package lists, etc, without getting this disturbing message, even if the underlying operation succeeds

Steps to reproduce

1. Any action from LuCI that calls apk so "Update Lists", "Upgrade", "Install", etc, etc...

Additional Information

{
	"kernel": "6.12.74",
	"hostname": "OpenWrt",
	"system": "Qualcomm Atheros QCA9558 ver 1 rev 0",
	"model": "TP-Link Archer C7 v2",
	"board_name": "tplink,archer-c7-v2",
	"rootfs_type": "squashfs",
	"release": {
		"distribution": "OpenWrt",
		"version": "25.12.2",
		"firmware_url": "https://downloads.openwrt.org/",
		"revision": "r32802-f505120278",
		"target": "ath79/generic",
		"description": "OpenWrt 25.12.2 r32802-f505120278",
		"builddate": "1774469393"
	}
}

What browsers do you see the problem on?

Chrome

Relevant log output

[dhdaines]

This turns out to be an issue with the ddns-scripts package, I think. Its post-install script has a tendency to hang forever, causing a timeout in the LuCI package manager, leading to frustrating behaviour as apk is still running somewhere or has left a lock file hanging around.

[dhdaines]

Leaving this open because I think luci-app-package-manager ought to be able to deal with the situation where an underlying apk hangs or crashes.