lua_single_target

[Roman_Gruber]

I'd appreciate if we had a news item regarding this LUA_SINGLE_TARGET thing.
The key information should be which lua to use, how to set it up. I assume it is again make.conf. What the recommendation is, e.g. the news item regarding python. Will there be only single_target or the other thing also like python has?

Example:

[fedeliallalinea]

Like PYTHON_TARGETS or PYTHON_SINGLE_TARGET if you don't care about a specific version profile set it for you.
For set a specific version better is use package.use for example with entry */* LUA_SINGLE_TARGET: lua5-1 because it not override profile setting as would be done by make.conf.
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[Ionen]

lua usage is unfortunately less streamlined than python right now, so you may find yourself needing to set this manually for a few packages that only support specific versions.

For a bit of a lowdown on versions, lua5.1 and luajit are a lot like python2.7 -- some things are refusing to move on. 5-1 was used as default for both LUA_TARGETS and LUA_SINGLE_TARGET because its use is still more widespread resulting "less" flag juggling.

I use lua5-3 system-wide myself (set manually) with exceptions where needed, still early to use 5-4 in general. And lua5-2 is somewhat useless, there's been talk to remove it.

Not that I'm saying should use 5-3, simply need to use what a package you need supports and what you set globally is just for "most frequently used" convenience.

As mentioned above, works a lot like python nonetheless. For package.use examples:

[user]

Thanks Ionen,
for give some background information about lua versions.

[CaptainBlood]