mpv in -current after lua addition

giomat · 09-02-2023, 01:21 AM

When lua was added in slackware my mpv build stopped working. I then discovered that it needs to be built with a lower version of lua (5.1 in slackbuilds), so I had to replace the slackware package with the old lua.
I wonder if there's a way to build this old lua in a way that can coexist with other versions, I think it is since in slackbuilds there's lua52 and lua53 recipes which have no conflict with other lua installed.
Since a lot of people seem to use mpv maybe someone has already come up with a solution.

ponce · 09-02-2023, 01:53 AM

I'm looking into it to backport a lua51 script and a lua (version 5.4.x) also to the SBo 15.0 repository but it will take some time because there are hundreds of scripts depending on lua and I'm a bit overloaded by other stuff ATM...

note that, last time I tried, I seem to recall that you can avoid building mpv with lua as you can use for the scope also luajit (that you can build and install regardless of any other version of lua installed in the system).

giomat · 09-02-2023, 03:30 AM

mille grazie ponce!
I'll modify my queue file and try with luajit then

USUARIONUEVO · 09-02-2023, 06:25 PM

luajit
Just-in-time compiler and drop-in replacement for Lua 5.1

Then probably can upgrade lua on sbo to same as -current and change dependencies when no support to lua 5.4 and put luajit instead.

But this is a lot of work.

fulalas · 09-09-2023, 05:04 AM

Quote:

Originally Posted by ponce

you can avoid building mpv with lua as you can use for the scope also luajit (that you can build and install regardless of any other version of lua installed in the system).

If you build mpv without Lua it won't enable some features, like statistics about the currently playing file (when pressing 'i'), for instance. Not to mention the support to users scripts. So I guess it's not an option. And there's a reason why mpv won't support newer Lua versions: https://github.com/mpv-player/mpv/wi...ua-53-or-newer

I noticed that in Lua Makefile there's this parameter -DLUA_COMPAT_5_3, so I wondered if adding -DLUA_COMPAT_5_2 and -DLUA_COMPAT_5_1 would fix mpv complaining about Lua being too new, but the build process complained anyway, so I tried to remove the checking and compiled again, then an error in a check during runtime, which I removed and recompiled mpv, but then it gives me this runtime error:

Code:

[osc] 
[osc] stack traceback:
[osc] 	[C]: in function 'mp.input_set_section_mouse_area'
[osc] 	mp.defaults:133: in function 'mp.set_mouse_area'
[osc] 	@osc.lua:191: in function 'set_virt_mouse_area'
[osc] 	@osc.lua:2943: in main chunk
[osc] 	[C]: in ?
[osc] 	[C]: in function 'require'
[osc] 	[string "require '@osc.lua'"]:1: in main chunk
[osc] 	[C]: in ?
[osc] 	[C]: in ?
[osc] Lua error: mp.defaults:133: bad argument #2 to 'input_set_section_mouse_area' (number has no integer representation)

This issue will affect basically all Linux users (not just Slackware) who have mpv and the recent rpm 4.18.1 package.

EDIT: I wasn't expect that but USUARIONUEVO is right: by just installing luajit we can have mpv building/running even when newer lua (e.g. 5.4.6) is present.

DryFalls · 09-09-2023, 04:38 PM

I use a lua-compat package with libraries from lua5.1, 5.2 and 5.3 and with the binaries from 5.3 (extracted from SBo packages) and mpv and conky work fine. The package is only 392k if size is a concern.

USUARIONUEVO · 09-09-2023, 04:58 PM

Quote:

Originally Posted by DryFalls

I use a lua-compat package with libraries from lua5.1, 5.2 and 5.3 and with the binaries from 5.3 (extracted from SBo packages) and mpv and conky work fine. The package is only 392k if size is a concern.

overwritten files from original slackware packages ... best ides ever .../ironic off

The way is luajit for packages no want lua up to 5.1.

Archlinux have mpv under luajit and modern code with lua 5.4

glorsplitz · 09-09-2023, 09:42 PM

Quote:

Originally Posted by USUARIONUEVO

Archlinux have mpv under luajit and modern code with lua 5.4

mpv SBo maintainer needs to be let know? I prefer mpv to vlc.