Lua notes

Random C notes.

Fix conflicting package installation

When a package has been installed with luarocks, the package manager (pacman in my case) may find trouble handling it when another program has it as a dependency. I got this error:

// after sudo pacman -S some_lua_software
error: failed to commit transaction (conflicting files)
lua-filesystem: /usr/lib/lua/5.4/lfs.so exists in filesystem
lua-filesystem: /usr/lib/luarocks/rocks-5.4/luafilesystem/1.8.0-1/doc/us/doc.css exists in filesystem
lua-filesystem: /usr/lib/luarocks/rocks-5.4/luafilesystem/1.8.0-1/doc/us/examples.html exists in filesystem
lua-filesystem: /usr/lib/luarocks/rocks-5.4/luafilesystem/1.8.0-1/doc/us/index.html exists in filesystem
// etc, etc, etc

The solution was to perform

luarocks remove --force luafilesystem

and then try with pacman -S again.

Forcing it was necesary because luacheck depended on luafilesystem, so it wouldn’t let me remove it. However, I it again after installing the other software, and fortunately (but as expected) it still worked.

Prosody

Diario de pruebas

Pruebas en local

• Instalación:

    pacman -S prosody
    luarocks insatll luaunbound # para DNS
    pacman -S profanity # cliente CLI
  

• Añadir en /etc/prosody/prosody.lua.cfg:

    VirtualHost "localhost" -- buscar esta linea y escribir las dos de abajo    
    authentication = "internal_hashed"
    c2s_require_encryption = false
  

• systemctl start prosody
• prosodyctl adduser user1@localhost
• Y desde profanity: /connect user1@localhost tls disable