From a90a0d3ec2783df75343d366d4b52e586b42f6e6 Mon Sep 17 00:00:00 2001
From: Hisham Muhammad <hisham@gobolinux.org>
Date: Sun, 5 Dec 2010 13:57:46 -0200
Subject: Make sorting for manifest table stable.

---
 src/luarocks/persist.lua | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/luarocks/persist.lua b/src/luarocks/persist.lua
index 70a89b8d..d74a805e 100644
--- a/src/luarocks/persist.lua
+++ b/src/luarocks/persist.lua
@@ -5,6 +5,8 @@
 -- as it is used in the bootstrapping stage of the cfg module.
 module("luarocks.persist", package.seeall)
 
+local util = require("luarocks.util")
+
 --- Load a Lua file containing assignments, storing them in a table.
 -- The global environment is not propagated to the loaded file.
 -- @param filename string: the name of the file.
@@ -26,6 +28,10 @@ function load_into_table(filename, tbl)
    return result
 end
 
+local function string_sort(a,b)
+   return tostring(a) < tostring(b)
+end
+
 --- Write a table as Lua code representing a table to disk
 -- (that is, in curly brackets notation).
 -- This function handles only numbers, strings and tables
@@ -37,7 +43,7 @@ local function write_table(out, tbl, level)
    local sep = "\n"
    local indent = true
    local i = 1
-   for k, v in pairs(tbl) do
+   for k, v in util.sortedpairs(tbl, string_sort) do
       out:write(sep)
       if indent then
          for n = 1,level do out:write("  ") end
@@ -89,7 +95,7 @@ function save_from_table(filename, tbl)
    if not out then
       return nil, "Cannot create file at "..filename
    end
-   for k, v in pairs(tbl) do
+   for k, v in util.sortedpairs(tbl, string_sort) do
       out:write(k.." = ")
       write_table(out, v, 1)
       out:write("\n")
-- 
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