Experimental Windows cross-compiled binary build

This commit consolidates the work that has been ongoing over the
last few weeks in producing the single-binary builds of LuaRocks
based on the new distribution model described in
https://github.com/luarocks/luarocks/wiki/Project:-LuaRocks-new-distribution-model

The single-binary build is in a good shape for Linux,
it's a work-in-progress for Windows (binaries do build,
but some work on the dependencies is still necessary),
and is untested in macOS.

2 files changed, 14 insertions, 1 deletions

diff --git a/src/luarocks/cmd.lua b/src/luarocks/cmd.lua
index 53e0c60a..4200959c 100644
--- a/src/luarocks/cmd.lua
+++ b/src/luarocks/cmd.lua
@@ -348,6 +348,19 @@ function cmd.run_command(description, commands, ...)
       project_dir = flags["project-tree"]:gsub("[/\\][^/\\]+$", "")
    end
 
+   -- FIXME A quick hack for the experimental Windows build
+   if os.getenv("LUAROCKS_CROSS_COMPILING") then
+      cfg.each_platform = function()
+         local i = 0
+         local plats = { "unix", "linux" }
+         return function()
+            i = i + 1
+            return plats[i]
+         end
+      end
+      fs.init()
+   end
+
    -----------------------------------------------------------------------------
    local ok, err = cfg.init(lua_data, project_dir, util.warning)
    if not ok then
diff --git a/src/luarocks/core/cfg.lua b/src/luarocks/core/cfg.lua
index e160d69b..af57e7ca 100644
--- a/src/luarocks/core/cfg.lua
+++ b/src/luarocks/core/cfg.lua
@@ -276,7 +276,7 @@ local function make_defaults(lua_version, target_cpu, platforms, home)
       local localappdata = os.getenv("LOCALAPPDATA")
       if not localappdata then
          -- for Windows versions below Vista
-         localappdata = os.getenv("USERPROFILE").."/Local Settings/Application Data"
+         localappdata = (os.getenv("USERPROFILE") or "c:/Users/All Users").."/Local Settings/Application Data"
       end
       defaults.local_cache = localappdata.."/LuaRocks/Cache"
       defaults.web_browser = "start"