[Luarocks-developers] On loading and running luarocks from a lua5.1 REPL

[Eduardo Ochs <eduar...@gm...>]

Hi all,

I am trying to understand more about luarocks by running it from the
lua5.1 interpreter... I added this to my $LUA_INIT file,

  loadluarocks = function ()
      package.path =
"/usr/share/lua/5.1//?.lua;/usr/share/lua/5.1//?/init.lua;"..package.path
      command_line = require("luarocks.command_line")
      program_name = "luarocks"
      program_description = "LuaRocks main command-line interface"
      commands          = {}
      commands.help     = require("luarocks.help")
      commands.pack     = require("luarocks.pack")
      commands.unpack   = require("luarocks.unpack")
      commands.build    = require("luarocks.build")
      commands.install  = require("luarocks.install")
      commands.search   = require("luarocks.search")
      commands.list     = require("luarocks.list")
      commands.remove   = require("luarocks.remove")
      commands.make     = require("luarocks.make")
      commands.download = require("luarocks.download")
      commands.path     = require("luarocks.path")
      commands.show     = require("luarocks.show")
      commands.new_version = require("luarocks.new_version")
    end

so that I can do things like this:

  Lua 5.1.5  Copyright (C) 1994-2012 Lua.org, PUC-Rio
  > loadluarocks()
  > command_line.run_command("help")

and replace functions dynamically, adding print-like statements to
them.

One thing that I find very frustrating about luarocks is that I've
never managed to learn how to run it more verbosely... for example, if
I run this from from a shell,

  sudo luarocks remove lpeg
  sudo luarocks install lpeg

then the output shows how to build lpeg without luarocks - something
like:

  Installing http://luarocks.org/repositories/rocks/lpeg-1.0.0-1.src.rock...
  Using http://luarocks.org/repositories/rocks/lpeg-1.0.0-1.src.rock...
switching to 'build' mode
  Archive:  /tmp/luarocks_luarocks-rock-lpeg-1.0.0-1-1133/lpeg-1.0.0-1.src.rock
    inflating: lpeg-1.0.0-1.rockspec
    inflating: lpeg-1.0.0.tar.gz
  gcc -O2 -fPIC -I/usr/include/lua5.1 -c lpcap.c -o lpcap.o
  gcc -O2 -fPIC -I/usr/include/lua5.1 -c lpcode.c -o lpcode.o
  gcc -O2 -fPIC -I/usr/include/lua5.1 -c lpprint.c -o lpprint.o
  gcc -O2 -fPIC -I/usr/include/lua5.1 -c lptree.c -o lptree.o
  gcc -O2 -fPIC -I/usr/include/lua5.1 -c lpvm.c -o lpvm.o
  gcc -shared -o lpeg.so -L/usr/local/lib lpcap.o lpcode.o lpprint.o
lptree.o lpvm.o
  Updating manifest for /usr/local/lib/luarocks/rocks

  lpeg 1.0.0-1 is now built and installed in /usr/local/ (license: MIT/X11)

but I would like to make that output even more verbose, showing the
"chdir"s, the calls to tar and unzip, and the "cp"s - and, ideally,
but that may be much harder, to have a way to make luarocks run like
"make -n", showing the commands that it would run, but without running
them...

Any help or hints would be VERY appreciated. I understand very little
of the sources right now...

  Cheers =),
    Eduardo Ochs
    eduar...@gm...
    http://angg.twu.net/