Re: Penlight rockspec read non-permission, why?

[Philipp Janda <siffiejoe@...>]

Am 13.11.2014 um 07:28 schröbte Dirk Laurie:
> Under Linux, I have to "sudo luarocks install" otherwise the stuff
> can't go into /usr/local.
>
> The most recent rock I installed (2014-11-03) is Penlight.
> An ordinary user can't show it.
>
> $ luarocks show penlight
> Error: Could not load rockspec file
> /usr/local/lib/luarocks/rocks/penlight/1.3.1-1/penlight-1.3.1-1.rockspec
> (cannot open /usr/local/lib/luarocks/rocks/penlight/1.3.1-1/penlight-1.3.1-1.rockspec:
> Permission denied)
>
> I reinstalled it, no difference. I have to `sudo` to show it.
>
> None of my other rocks has this problem.
>
> Theory 1: It only affects rocks installed after a certain date. Test it by
> installing another rock. Can show it, theory is wrong.
> Theory 2: Something funny about Penlight itself. Test it by downloading
> the rock.
>
> $ unzip -l penlight-1.3.1-1.src.rock | grep rockspec
>       2169  2013-09-24 19:17   penlight-1.3.1-1.rockspec
>       2157  2013-09-24 19:17   Penlight/penlight-1.1.0-3.rockspec
>
> There's an old rockspec lying around in the Penlight directory.
> That _is_ funny. But can it cause the error?

No. The problem is that the rockspec in the source rock has the wrong 
permissions (-rw-------). When you installed via `sudo`, `root` became 
the owner, so you can only read this rockspec whenever you are `root`. 
You can fix the problem yourself using `sudo chmod a+r` on the installed 
rockspec in the rocks tree, but someone (@Steve?) should probably upload 
a fixed source rock instead.

Philipp