本地luarocks包安装(luarepl)不工作

Question

我对luarocks很陌生，我只是试着安装luarepl。安装工作显然进行得很顺利：

$ luarocks install luarepl
Installing https://luarocks.org/luarepl-0.8-1.rockspec...
Using https://luarocks.org/luarepl-0.8-1.rockspec... switching to 'build' mode
Updating manifest for /Users/me/.luarocks/lib/luarocks/rocks-5.1
luarepl 0.8-1 is now built and installed in /Users/me/.luarocks (license: MIT/X11)

但是，如果我试图启动可执行文件，那么安装似乎就坏了：

$ ~/.luarocks/bin/rep.lua
/usr/local/bin/lua5.1: ...cks/lib/luarocks/rocks-5.1/luarepl/0.8-1/bin/rep.lua:23: module 'repl.console' not found:
    no field package.preload['repl.console']
    no file './repl/console.lua'
    no file '/usr/local/share/lua/5.1/repl/console.lua'
    no file '/usr/local/share/lua/5.1/repl/console/init.lua'
    no file '/usr/local/lib/lua/5.1/repl/console.lua'
    no file '/usr/local/lib/lua/5.1/repl/console/init.lua'
    no file './repl/console.so'
    no file '/usr/local/lib/lua/5.1/repl/console.so'
    no file '/usr/local/lib/lua/5.1/loadall.so'
    no file './repl.so'
    no file '/usr/local/lib/lua/5.1/repl.so'
    no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
    [C]: in function 'require'
    ...cks/lib/luarocks/rocks-5.1/luarepl/0.8-1/bin/rep.lua:23: in main chunk
    [C]: ?

我查看了~/..luarocks dir：

$ cd ~ ; find .luarocks
.luarocks
.luarocks/bin
.luarocks/bin/rep.lua
.luarocks/config.lua
.luarocks/lib
.luarocks/lib/luarocks
.luarocks/lib/luarocks/rocks-5.1
.luarocks/lib/luarocks/rocks-5.1/luarepl
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/bin
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/bin/rep.lua
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/doc
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/doc/COPYING
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/doc/IDEAS.md
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/doc/plugins.md
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/doc/README.md
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/doc/Roadmap.md
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/luarepl-0.8-1.rockspec
.luarocks/lib/luarocks/rocks-5.1/luarepl/0.8-1/rock_manifest
.luarocks/lib/luarocks/rocks-5.1/manifest
.luarocks/share
.luarocks/share/lua
.luarocks/share/lua/5.1
.luarocks/share/lua/5.1/repl
.luarocks/share/lua/5.1/repl/console.lua
.luarocks/share/lua/5.1/repl/init.lua
.luarocks/share/lua/5.1/repl/plugins
.luarocks/share/lua/5.1/repl/plugins/autoreturn.lua
.luarocks/share/lua/5.1/repl/plugins/completion.lua
.luarocks/share/lua/5.1/repl/plugins/example.lua
.luarocks/share/lua/5.1/repl/plugins/filename_completion.lua
.luarocks/share/lua/5.1/repl/plugins/history.lua
.luarocks/share/lua/5.1/repl/plugins/keep_last_eval.lua
.luarocks/share/lua/5.1/repl/plugins/linenoise.lua
.luarocks/share/lua/5.1/repl/plugins/pretty_print.lua
.luarocks/share/lua/5.1/repl/plugins/rcfile.lua
.luarocks/share/lua/5.1/repl/plugins/rlwrap.lua
.luarocks/share/lua/5.1/repl/plugins/semicolon_suppress_output.lua
.luarocks/share/lua/5.1/repl/sync.lua
.luarocks/share/lua/5.1/repl/utils.lua

我能找到那些东西。我尝试在config.lua中添加一行，从本地安装加载包，但没有结果：

$ cat ~/.luarocks/config.lua
local_by_default=true

(移除它没有效果)

我错过了什么明显的步骤吗？

在没有参数的情况下运行luarocks将给我提供如下信息：

CONFIGURATION
    Lua version: 5.1
    Configuration files:
        System: /usr/local/etc/luarocks51/config-5.1.lua (ok)
        User  : /Users/me/.luarocks/config.lua (ok)

    Rocks trees in use:
        /Users/me/.luarocks ("user")
        /usr/local ("system")

用户摇滚树似乎不在包路径中：

$ lua
Lua 5.1.5  Copyright (C) 1994-2012 Lua.org, PUC-Rio
> print(package.path)
./?.lua;/usr/local/share/lua/5.1/?.lua;/usr/local/share/lua/5.1/?/init.lua;/usr/local/lib/lua/5.1/?.lua;/usr/local/lib/lua/5.1/?/init.lua

为什么？

Answer 1

来自https://github.com/luarocks/luarocks/wiki/Using-LuaRocks

大多数LuaRocks安装将以两棵岩石树为特色：

• “系统”岩石树(默认使用)
• “用户”岩石树

为了能够使用该模块，我们需要确保Lua在运行dkjson.lua时能够找到该require("dkjson")文件。您可以从Lua环境中检查Lua路径，使用

print(package.path)
print(package.cpath)

这些变量可以使用LUA_PATH和LUA_CPATH环境变量从外部Lua预配置.

如果您同时在Linux和Mac上的默认目录(/usr/local )中安装了Lua和LuaRocks，那么"system“树就是/usr/local，默认情况下它可以工作。但是，默认情况下，Lua不会检测到“用户”树(用于安装没有管理权限的岩石)。为此，我们需要配置这些环境变量。

LuaRocks提供了一种半自动的方式来实现这一点。如果键入以下命令：

luarocks path --bin

它将打印适合您的平台设置您的环境的命令。在典型的Unix终端环境中，您可以键入以下内容：

eval $(luarocks path --bin)

它会将这些变化暂时应用到你的外壳上。要永久设置这些变量，您必须将环境变量配置为shell配置(例如，如果您的shell是Bash，则将上面的行添加到您的.bashrc文件中)。