Memory options are inverted on HaikuOS

[4194304]

Operating System

Other

Description of bug

On HaikuOS, the memory selection options do not work properly. When you attempt to change the maximum memory option, nothing happens so it always stays at zero, however the minimum option does allow you to set it to whatever you want. This is the case on instances and the global default memory option.

While the memory options are inverted, the game sets the minimum memory option as the maximum memory option (and vice versa).

Edit: In multimc.cfg, the contents of the minimum memory box are saved as the maximum (Xmx) but maximum is saved as minimum (Xms).

Every time you exit the instance and go back into the memory options, the minimum memory option resets to 128MiB. When you exit the default memory selection dialog (in the MultiMC global settings), it reverts to 128MiB and restarting MultiMC will reset all instances back to 128MiB, along with multimc.cfg (the global settings).

While the game technically isn't supposed to run on HaikuOS, this is an issue with the launcher itself

Steps to reproduce

Install any JRE version from HaikuDepot, compile and run MultiMC

Suspected cause

Possibly it doesn't work correctly with OpenJDK on HaikuOS?

This issue is unique

• I have searched the issue tracker and did not find an issue describing my bug.

[phit]

multimc version?

[4194304]

0.7.0, latest developer commit

[phit]

so not an official build?

[4194304]

It isn't an official build (Linux binaries can't run on Haiku)

[phit]

we only support official binaries

[4194304]

So I want to ask -- what if I were to build the 0.7.0 release clean from source with no modifications whatsoever? This is a real issue with how MultiMC handles setting memory options on Haiku OS, and it very likely is not due to me compiling MultiMC from source. I want at the very least this to be looked into as a bug as other OSes (like certain Linux distros) might also do this

Edit: Also it might actually be a good idea to support Haiku OS as Haiku has everything Minecraft needs to run and the launcher works perfectly fine aside from this

[phit]

https://github.com/MultiMC/Launcher?tab=readme-ov-file#forkingredistributingcustom-builds-policy

[4194304]

I guess if this doesn't want to be looked into as a bug then it is how it is

[phit]

just from the description alone this sounds like some kind of issues with Haikus Qt5 port

[4194304]

interesting but it's a bit strange with how it just reverts everything to 128mb even if I set the memory options using a text editor (like editing multimc.cfg)

[4194304]

I might try Prism Launcher (as it uses Qt6) or test some other Qt5 apps to see if this is a MultiMC or Qt5 issue