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LuaRocks/luarocks

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Aug 05 17:00

cerealXDD opened #1429
Jul 28 03:51

happanda commented #905
Jul 27 04:30

riotrah commented #1001
Jul 22 04:50

ChildishGiant commented #1426
Jul 21 09:07

osch edited #1428
Jul 21 09:00

osch opened #1428
Jul 21 09:00

osch labeled #1428
Jul 20 19:35

robjwells labeled #1427
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robjwells opened #1427
Jul 19 22:40

hishamhm closed #1426
Jul 19 22:40

hishamhm commented #1426
Jul 19 12:50

ChildishGiant commented #1426
Jul 19 12:49

ChildishGiant opened #1426
Jul 19 12:49

ChildishGiant labeled #1426
Jul 19 08:05

kulti commented #1414
Jul 14 13:24

carnei-ro commented #952
Jul 12 03:46

cosmo0920 closed #1063
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cosmo0920 commented #1063
Jul 09 10:13

vadi2 opened #1425
Jul 09 10:13

vadi2 labeled #1425

Thijs Schreijer

@Tieske

@solisoft you need to update your LUA_PATH settings such that OpenResty looks in the right places. With OpenResty you can use: https://github.com/openresty/lua-nginx-module#lua_package_path to set it

Alex Guzun

@alexguzun

Hi there! Is everything ok with luarocks? Your build pipelines are failing with failures fetching rock files:
Example:
Error: Failed installing dependency: https://luarocks.org/kong-plugin-grpc-web-0.2.0-0.src.rock - Could not fetch rock file: Error fetching file: Failed downloading https://luarocks.org/kong-plugin-grpc-web-0.2.0-0.src.rock - kong-plugin-grpc-web-0.2.0-0.src.rock

The failing fetch is allways different

Thijs Schreijer

@Tieske

I noticed this too, usually with a "wantread" in the error message

solares

@solares

I'm trying to luarocks install http (on a dockerized Ubuntu), and it complains cqueues 20200726.54-0 depends on lua 5.4 (5.4-1 provided by VM). How can I satisfy lua 5.4 requirements? My docker image is 5.4.3, but reports 5.4-1. TIA anyone who can help.

Hisham Muhammad

@hishamhm

@solares is your installation failing? in other words, is it complaining that message or is it merely informing? :)

also, to anyone experience intermittent download failures, please make sure you upgrade to the latest LuaRocks 3.7.0, which has better handling of mirrors

solares

@solares

@hishamhm hello. It's failing. Final error is executor failed running [/bin/sh -c luarocks install http]: exit code: 1

Hisham Muhammad

@hishamhm

I don't think the depends on lua 5.4 message is the cause though, can you post the full output in a gist?

solares

@solares

https://gist.github.com/solares/0842edc34c301bc5ff3a87df07e7348c

solares

@solares

> luarocks --version
/usr/local/bin/luarocks 3.7.0

solares

@solares

@hishamhm

solares

@solares

Got past that bug. I added apt install m4 and apt install cqueues before luarocks install http.

Hisham Muhammad

@hishamhm

apt install cqueues shouldn't have been necessary, apt install m4 would have been sufficient

EduardasMeile

@EduardasMeile

@hishamhm Hello. Can you comment on the state of the Keplerproject codebase? I saw you had commits there. Me and my colleagues are using this stuff in production, but have concerns about things like WSAPI being dead projects.

solares

@solares

apt install cqueues shouldn't have been necessary, apt install m4 would have been sufficient

Thanks for the tip.

Hisham Muhammad

@hishamhm

@EduardasMeile some of the projects are indeed abandoned and looking for maintainers. I try to help out merging PRs and the like for projects for which I have commit access and some familiarity, but indeed there is no active development/roadmap for various of these projects.

Some orphaned Lua projects are now finding a new home at https://github.com/lunarmodules where a team of volunteers are helping to give a baseline of maintenance to them. Help is definitely welcome there! Also, if you're wondering about the status of any particular project in the keplerproject repo, I recommend opening an issue asking about it and seeing if you get a response (I don't know the exact status of each single project myself)

EduardasMeile

@EduardasMeile

@hishamhm Thank you for answering. Do you know if there is a reasonable replacement for WSAPI in the lua ecosystem that is actually being maintained? What is the preferred way of integrating a Lua web app with nginx (it does not support CGI natively)? The only way I got some WSAPI-based scripts to work with nginx is by using fcgiwrap and FastCGI. Perhaps you know of a better alternative?

Hisham Muhammad

@hishamhm

@EduardasMeile specifically about WSAPI, not that I'm aware of. I know that cgilua is used in production at PUC-Rio, so it continues to be maintained. As for alternatives, OpenResty is a currently-maintained package for running Lua+nginx (which includes its own nginx distribution), but it uses a different API, so your scripts would probably have to be ported over.

EduardasMeile

@EduardasMeile

@hishamhm Perhaps I am interpreting it wrong, but it really sounds like doing web apps specifically in Lua in 2021 is a bad idea?

We use Lua at my dayjob on embedded systems because of the small interpreter size and that is why WSAPI and such have been used historically.

but Xavante has no SSL support as far as I know

so we have recently started looking into a replacement

Hisham Muhammad

@hishamhm

OpenResty is actively maintained, and it's used in large projects such as Kong ( konghq.com ) — if your embedded system is big enough for nginx, it should be able to handle OpenResty.

EduardasMeile

@EduardasMeile

@hishamhm Isn't OpenResty more about extending nginx and making the webserver itself scriptable rather than writing more general Lua web apps?

Hisham Muhammad

@hishamhm

from what I can tell, it isn't lower level than WSAPI...

looks like there was even a bridge once: https://github.com/ignacio/wsapi-openresty

EduardasMeile

@EduardasMeile

unlike regular nginx that has a bitbake recipe, I'd need to make this cross-compile myself somehow, which might turn out to be a non-trivial task

a lot of projects do not support cross-compilation properly (nginx included) and need to be patched

also, as a sidenote, after porting some Lua libraries to Yocto/Openembedded (writing bitbake recipes for them) I have become convinced that almost all Lua projects do not care about cross-compilation. All of their custom make files need to fixed in one way or another.

Things like the WSAPI configure file wants to run "which lua" that is not appropriate in a cross-compilation context

and so on

much of this could be avoided if projects used GNU Autotools or CMake instead of custom Makefiles

as these encourage to write projects in a manner that suits cross-compilation better

EduardasMeile

@EduardasMeile

though at the end of the day one can always mess up, no matter the build system

@hishamhm just out of curiosity: has cross-compilation ever come up as a topic when developing Luarocks?

Hisham Muhammad

@hishamhm

@EduardasMeile yes, that's one of the reasons why there are dozens of configuration variables in LuaRocks's config file format and virtually every setting is a moving part. The dependencies for the luarocks.exe binary for Windows are built using LuaRocks on a Linux machine, for example. The capability is there, it's just not user-friendly (you have to know what values to set on those configuration variables).

EduardasMeile

@EduardasMeile

@hishamhm What would be your ideal webserver + lua web framework combination for implementing a web app on an embedded Linux device these days?

Excluding LuCI + uhttpd on OpenWrt as that is too OS-specific

I am kind of thinking now that perhaps nginx might not have been a good choice for a Xavante replacement if one wants to still use lua

Hisham Muhammad

@hishamhm

asking the wrong person, sorry. I haven't done web apps in a long long time

EduardasMeile

@EduardasMeile

@hishamhm perhaps you know a lua web app guru who is an authority in this field and I could actually ask?

Hisham Muhammad

@hishamhm

try the Lua mailing list, perhaps?

EduardasMeile

@EduardasMeile

@hishamhm as a sidenote, I have spent some time on the #lua channel on freenode and as far as I can tell no one is really working with lua web apps or WSAPI these days

or the people working with this stuff maintain legacy applications and don't really participate in community discussions

HarryC145

@HarryC145

Hi all, trying to get LuaRocks working on MacOS
`sh-3.2# luarocks --lua-dir /usr/local/bin --lua-version 5.1 config variables.LUA_LIBDIR /usr/local/lib/
Wrote
variables.LUA_LIBDIR = "/usr/local/lib/"
to
/var/root/.luarocks/config-5.1.lua
sh-3.2# luarocks --lua-dir /usr/local/bin --lua-version 5.1 config variables.LUA_INCDIR /usr/local/include/
Wrote
variables.LUA_INCDIR = "/usr/local/include/"
to
/var/root/.luarocks/config-5.1.lua
sh-3.2# luarocks --lua-dir /usr/local/bin --lua-version 5.1 install luasocket
Installing https://luarocks.org/luasocket-3.0rc1-2.src.rock

Error: Failed finding Lua header files. You may need to install them or configure LUA_INCDIR.`

I'm setting the variables, it's successfully writing them but then doesn't appear to be reading from them. Any ideas please?

Pierre Chapuis

@catwell

What would be your ideal webserver + lua web framework combination for implementing a web app on an embedded Linux device these days?

I don't have an ideal reco but look if you can find something you like in my bookmarks -> https://pinboard.in/u:catwell/t:lua/t:web

Hisham Muhammad

@hishamhm

@HarryC145 the issue is setting --lua-dir /usr/local/bin: --lua-dir expects a "prefix dir", not a "bin dir". By setting a new prefix, this overrides the entire configuration of Lua paths (including bin, lib and include). You can check the results by running luarocks --lua-dir /usr/local/bin config vs. luarocks --lua-dir /usr/local config and seeing how the variables are affected.

in short, --lua-dir /usr/local should do the trick for you, and if you're setting the proper paths using luarocks config, then you shouldn't need to explicitly pass --lua-dir anymore

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