[Luarocks-developers] Problems with Luarocks under cygwin

[Axel K. <axe...@gm...>]

Hello Everybody,
I'm just getting into Lua and want use it under Windows7 and cygwin.
Lua5.2 itself if available for cygwin, so it runs fine.
Then I got the (unix) source for Luarocks 2.3 and it also installed fine
(using configure & make). 

Next I tried to install markdown using
"luarocks install markdown"       and got:
--------------------
Warning: falling back to curl - install luasec to get native HTTPS support
Warning: Failed searching manifest: Failed extracting manifest file
Installing
https://raw.githubusercontent.com/rocks-moonscript-org/moonrocks-mirror/master/markdown-0.33-1.src.rock...
Using
https://raw.githubusercontent.com/rocks-moonscript-org/moonrocks-mirror/master/markdown-0.33-1.src.rock...
switching to 'build' mode
Error: Failed unpacking rock file:
/c/Users/Axel/AppData/Local/Temp/luarocks_luarocks-rock-markdown-0.33-1-9439/markdown-0.33-1.src.rock
--------------------

The problem seems to be that
/c/Users/Axel/AppData/Local/Temp/luarocks_luarocks-rock-markdown-0.33-1-9439/markdown-0.33-1.src.rock
simply does not exist (i.e. somehow the download didn't work).
So I downloaded the rock file to my local harddrive and tried again using:
"luarocks install markdown-0.33-1.src.rock"  but I got:
------------------------
Using markdown-0.33-1.src.rock... switching to 'build' mode
Error: Failed unpacking rock file: /c/myTmp/markdown-0.33-1.src.rock
-----------------------

So, that's it. I have no idea what could be wrong :-(

Any help is welcomed,
       Axel