diff -u -r ../luarocks-2.4.0/src/luarocks/fs/unix/tools.lua ./src/luarocks/fs/unix/tools.lua
--- ../luarocks-2.4.0/src/luarocks/fs/unix/tools.lua	2016-09-08 14:39:09.000000000 -0400
+++ ./src/luarocks/fs/unix/tools.lua	2016-09-26 09:19:08.200979160 -0400
@@ -224,7 +224,7 @@
    assert(type(name) == "string")
    name = dir.normalize(name)
 
-   local template = (os.getenv("TMPDIR") or "/tmp") .. "/luarocks_" .. name:gsub(dir.separator, "_") .. "-XXXXXX"
+   local template = (os.getenv("TMPDIR") or "@TERMUX_PREFIX@/tmp") .. "/luarocks_" .. name:gsub(dir.separator, "_") .. "-XXXXXX"
    local pipe = io.popen(vars.MKTEMP.." -d "..fs.Q(template))
    local dirname = pipe:read("*l")
    pipe:close()