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Installation instructions for Windows

The LuaRocks package for Windows is an all-in-one package which includes everything you need to run LuaRocks, including helper binaries and a Lua interpreter. (You can use your own Lua interpreter if you already have one installed, see below.)

The package includes an installer script, INSTALL.BAT, which provides a number of options for customizing your installation. Run INSTALL /? for details.

The default settings

The default settings are suitable for installing LuaRocks globally in your system while allowing both system-wide and per-user sets of rocks. Non-priviledged accounts will be able to install their own rocks in their %APPDATA% directory, and administrator accounts can install rocks that will be available for everyone.

Making a system-wide repository

All paths described above can be overridden with flags in the INSTALL.BAT script, or entries in the configuration file.

/P dir Where to install. Default is %PROGRAMFILES%\LuaRocks\version. Because LuaRocks contains 32bit executables, this will be in the c:\program files (x86)\ path on 64bit systems.

Configuring the destinations:

/TREE dir Root of the local tree of installed rocks. Default is %PROGRAMFILES%\LuaRocks\systree. On 64bit systems this default depends on the Lua interpreter used. A 64bit interpreter will have the c:\program files\ path, where a 32bit interpreter on a 64bit system will follow the c:\program files (x86)\ path.
/SCRIPTS dir Where to install commandline scripts installed by rocks. Default is {TREE}/bin.
/CONFIG dir Location where the config file should be installed. Default is to follow /P option
/SELFCONTAINED Creates a self contained installation in a single directory given by /P. Sets the /TREE and /CONFIG options to the same location as /P. And does not load registry info with option /NOREG. The only option NOT self contained is the user rock tree, so don't use that if you create a self contained installation.

Configuring the Lua interpreter:

/LV version Lua version to use; either 5.1 or 5.2. Default is 5.1.
/LUA dir Location where Lua is installed - e.g. c:\lua\5.1\. If not provided, the installer will search the system path and some default locations for a valid Lua installation. This is the base directory, the installer will look for subdirectories bin, lib, include. Alternatively these can be specified explicitly using the /INC, /LIB, and /BIN options.
/INC dir Location of Lua includes - e.g. c:\lua\5.1\include. If provided overrides sub directory found using /LUA.
/LIB dir Location of Lua libraries (.dll/.lib) - e.g. c:\lua\5.1\lib. If provided overrides sub directory found using /LUA.
/BIN dir Location of Lua executables - e.g. c:\lua\5.1\bin. If provided overrides sub directory found using /LUA.
/L Install LuaRocks' own copy of Lua even if detected, this will always be a 5.1 installation. (/LUA, /INC, /LIB, /BIN cannot be used with /L)

within an application.

Compiler configuration:

/MW Use mingw as build system instead of MSVC.

Other options:

/FORCECONFIG Use a single config location. Do not use the LUAROCKS_CONFIG variable or the user's home directory. Useful to avoid conflicts when LuaRocks is embedded
/F Force. Remove installation directory if it already exists.
/NOREG Do not load registry info to register '.rockspec' extension with LuaRocks commands (right-click).
/NOADMIN The installer requires admin priviledges. If not available it will elevate a new process. Use this switch to prevent elevation, but make sure the destination paths are all accessible for the current user.
/Q Do not prompt for confirmation of settings

After installation, a default config file called config.lua will be installed at the directory defined by /CONFIG. For further configuration of LuaRocks paths, see the Config file format. For more information on the structure of rocks trees see rocks repositories.

Making a self-contained installation

Another option is to install LuaRocks in a self-contained manner. This is an interesting alternative when shipping an application which uses third-party modules. Bundling them as rocks reduces maintenance overhead and allows the user to perform updates. In this scenario, it is not desired to have the user's (or the system's) configuration affect the self-contained LuaRocks install, in case the user or the system also have different LuaRocks installations. For this reason, the INSTALL.BAT script allows to hardcode the location of a configuration file. For example, the compilation process of a package bundling LuaRocks could do something like this:

SET PREFIX=C:\mypackage
INSTALL /P %PREFIX% /CONFIG %PREFIX%\luarocks

The copy of LuaRocks installed in C:\mypackage will ignore customization schemes such as the %LUAROCKS_CONFIG% environment variable and will only use C:\mypackage\luarocks\config.lua. An interesting option in those cases is for the application to provide in its configuration file an URL for their own rocks repository, so they can have control over updates to be performed. Continuing the previous example, luarocks\config.lua could contain something like this:

repositories = {
   "http://www.example.com/rocks/"
}

Picking the Lua interpreter

LuaRocks can use its own Lua interpreter provided by the Lua for WIndows project, and will do so by default if it fails to find your Lua installation automatically. If you want to use your own interpreter, which is not on the system path, you can pass its path using the /LUA variable (or /BIN, /LIB and /INC explicitly, if you have a custom directory structure). When looking for an interpreter, it will also try to figure out the name of the Lua binary (lua.exe, lua5.1.exe). This is set in the lua_interpreter variable in the configuration file. If you want to use an alternative name to the interpreter, you can set that variable in your configuration file directly. An important element is the runtime libraries used by the interpreter, as LuaRocks must compile additional rocks installed with the same runtime as the interpreter. To do this LuaRocks will analyse the executable found.

Next steps

Once LuaRocks is installed, learn more about using LuaRocks.


Installing over "Lua for Windows"

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