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Jun 28 18:11

MathiasSven commented #1418
Jun 26 05:01

xuexb commented #952
Jun 26 04:49

xuexb commented #952
Jun 26 04:48

xuexb commented #952
Jun 22 13:19

awa5114 labeled #1423
Jun 22 13:19

awa5114 opened #1423
Jun 22 12:30

redcatbear commented #559
Jun 20 11:47

robertlzj commented #1407
Jun 20 11:30

robertlzj commented #1407
Jun 20 10:53

robertlzj commented #1407
Jun 20 03:09

TECHOPC edited #1422
Jun 20 03:08

TECHOPC opened #1422
Jun 20 03:08

TECHOPC labeled #1422
Jun 07 00:24

hishamhm commented #1408
Jun 06 20:14

hishamhm on loader-which

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Jun 06 20:14

hishamhm on master

tests: accept full path in -Xhe… test: perform variable substitu… loader.which: new option for se… and 3 more (compare)
Jun 06 20:14

hishamhm closed #1420
Jun 06 20:14

hishamhm opened #1420
Jun 06 18:57

hishamhm on loader-which

tests: accept full path in -Xhe… test: perform variable substitu… loader.which: new option for se… and 3 more (compare)
Jun 06 18:52

hishamhm on loader-which

tests: accept full path in -Xhe… test: perform variable substitu… loader.which: new option for se… and 3 more (compare)

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

nepta

@Nepta

hello there

anyone know how to manage multiple version of lua with luarocks ? (in particular having lua5.3 and luajit)

nepta

@Nepta

i am using luaver already to manage my version, but it's weird, i think it want reinstall luarocks when you change your lua version ?

nepta

@Nepta

ok, i think i managed something

by having a config-5.1.lua in etc/config/ with correct variable to point to luajit binary / lib i can use luarocks --lua-version 5.1 to make it manage my luajit config

now i only need to make a wrapper to set the correct LUA_PATH / LUA_CPATH when using luajit

lol main function has more than 120 local variables

hisham_hm

@hisham_hm:matrix.org

[m]

@Nepta you can use the flag --lua-version 5.x, or luarocks --local config lua_version 5.x to set the default permanently

nepta

@Nepta

yes, it's what i use currently

but, to be honnest i did have some issue because i use luavela instead of the standard luajit

and it seem that luarocks have the names hardcoded when looking for the binary (either lua5.1 or luajit)

for now, i adding table.insert(names, "luavela) in util.lua work for me, but i am not familiar enough with luarocks config file, is there a way to add it in config-5.1.lua in some way ? it seem to have a field for it (lua_interpreter)

hisham_hm

@hisham_hm:matrix.org

[m]

yes, you can change the name of the interpreter

nepta

@Nepta

another question, can the "builtin" back-end compile cpp code ?

hisham_hm

@hisham_hm:matrix.org

[m]

no, but there is a cpp backend available in luarocks.org which you can specify using build_dependencies!

nepta

@Nepta

nice ! i will look into it, for now i did a makefile with 'g++' harcoded in it, but the wiki seem to say that it's not a good idea

nepta

@Nepta

'-'

i just saw that you are an admin on luarocks

thanks for your responses

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