Bug#834596: minetest-mod-nether: conflicts with minetest-mod-moreblocks

[Nils Dagsson Moskopp]

Package: minetest-mod-nether
Version: 2-1
Severity: important

Dear Maintainer,

I have installed minetest-mod-moreblocks and minetest-mod-nether.
Activating both in a map does not work and generates this error:

--- snib ---
2016-08-17 14:28:03: WARNING[Main]: Undeclared global variable "stairsplus" accessed at /usr/share/games/minetest/mods/nether/init.lua:489
2016-08-17 14:28:03: ERROR[Main]: ModError: Failed to load and run script from /usr/share/games/minetest/mods/nether/init.lua:
2016-08-17 14:28:03: ERROR[Main]: /usr/share/games/minetest/mods/nether/init.lua:489: attempt to index global 'stairsplus' (a nil value)
2016-08-17 14:28:03: ERROR[Main]: stack traceback:
2016-08-17 14:28:03: ERROR[Main]: 	/usr/share/games/minetest/mods/nether/init.lua:489: in main chunk
--- snab ---

It seems to me that minetest-mod-nether relies on the assumption that
minetest-mod-moreblocks declares a global with the name “stairsplus”.

The relevant code in /usr/share/games/minetest/mods/nether/init.lua:

--- snib ---
if minetest.get_modpath("moreblocks") then
        stairsplus:register_all(
                "nether", "brick", "nether:brick", {
                        description = "Nether Brick",
                        groups = {cracky = 2, level = 2},
                        tiles = {"nether_brick.png"},
                        sounds = default.node_sound_stone_defaults(),
        })
end
--- snab ---

Removing that code fixes the problem, but obviously removes a feature.

-- System Information:
Debian Release: 8.5
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 3.16.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages minetest-mod-nether depends on:
ii  minetest  0.4.14+repack-5

minetest-mod-nether recommends no packages.

minetest-mod-nether suggests no packages.

-- debconf information excluded