deepakjois / luapackageloader Goto Github PK

The current package definition is as following:

\ProvidesPackage{}[\luapackageloaderpkgdate\space v\luapackageloaderversion\space Lua package searchers for LuaTeX]

This leads to the warning

LaTeX Warning: You have requested package `luapackageloader',
               but the package provides `'.

which is caused by the empty argument of \ProvidesPackage.

This should include common gotchas like

• Using packages that are known to work with Lua 5.2 (because LuaTeX is at 5.2)
• running $eval (luarocks path) to make sure LuaRocks paths are added to package.cpath and package.path.
• We could also include creating a separate clean Lua tree using hererocks

WIll make it easier to have the docs in Markdown (for web), LaTeX and PDF (for CTAN)

Hello,

I am unable to load an external C module installed via luarocks. I am running Mac OS 11.3.1 and have installed luarocks via homebrew and am using TeX live. To reproduce:

1. brew install luarocks
2. Install a lua module that uses a C library, in my case cjson: luarocks install lua-cjson
3. Make sure LUA_PATH and LUA_CPATH environment variables match output of luarocks path.
4. Run lualatex --shell-escape on a .tex file which contains lua code calling cjson (or another library; I've also run into issues trying to get lua-curl to work): local cjson = require("cjson"). This produces the following:

./vazneExamples.lua:3: module 'cjson' not found:
        no field package.preload['cjson']
        [lua searcher]: module not found: 'cjson'
        no file '/opt/homebrew/Cellar/luarocks/3.8.0/share/lua/5.4/cjson.lua'
        no file '/opt/homebrew/share/lua/5.4/cjson.lua'
        no file '/opt/homebrew/share/lua/5.4/cjson/init.lua'
        no file '/opt/homebrew/lib/lua/5.4/cjson.lua'
        no file '/opt/homebrew/lib/lua/5.4/cjson/init.lua'
        no file './cjson.lua'
        no file './cjson/init.lua'
        no file '/Users/jessebrault/.luarocks/share/lua/5.4/cjson.lua'
        no file '/Users/jessebrault/.luarocks/share/lua/5.4/cjson/init.lua'
        [kpse C searcher] file not found: 'cjson'
stack traceback:
        [C]: in function 'require'
        ./vazneExamples.lua:3: in main chunk
        [C]: in function 'require'
        [\directlua]:2: in main chunk.

It appears that the luapackageloader is not using the C searcher/looking on LUA_CPATH. It is looking on LUA_PATH, as evidenced by the above.

I am wondering if there is any advice for this. I would love to use this package in my current project. Thank you!