Bug: It is possible to have multiple versions of a rock installed in the system about luarocks HOT 8 CLOSED

I think of this as a feature; although not being able to specify the version of the rock to be used is indeed a missing behaviour. I suggest we should be able to use something like
luarocks.require(rock_name, [^|$|-%d])
to specify what version to use.
luarocks.require(rock_name, '^') -- use the earliest version
luarocks.require(rock_name, '$') -- use the latest version
luarocks.require(rock_name, '2-$') -- use the second earliest version before the latest
luarocks.require(rock_name, '2+^') -- use the second latest version after the earliest

I don't know about what you think of this,... but I believe that this is complicated.
Maybe even a simple luarocks.require(rock_name, version_number) would be sufficient.

from luarocks.

This is not a feature — this is an abominable misdesign that causes me immense pain in my workflow.

from luarocks.

No single sane program will need more than one version of a rock.

If user needs several versions of a rock installed in the system — that is because he needs to install several programs at once. LR should give him a way to create several "sandboxes" — one for each version combination.

from luarocks.

No single sane program will need more than one version of a rock.

Of course,.. this goes without saying :)

In this relation I wouldn't put Luarocks in the position of the consumer of sanboxes configurations. Having lua_program_here use Luarocks to create a sandox would just be way outside the scope of Luarocks. Am I mis-understanding you ?

We need the programs to be able to specify what version of the installed rock they need and request it from Luarocks.

from luarocks.

Sandboxes are outside of the scope of this ticket. I mentioned them only as a counter-argument against your position with keeping this "feature".

Again: one local LR repository may contain at most one active version of each rock. Everything else leads to trouble.

from luarocks.

This is a feature, as explained in http://article.gmane.org/gmane.comp.lang.lua.luarocks/2197 -- multiple simultaneous versions was one of the original requirements of the project.

I will consider not making this behavior the default in the future. But this feature is not a bug and support for this will not be removed.

from luarocks.

I agree with agladsh, especially since it just installs new versions over the top without telling me. Please at least make it upgrade the current rock by default.

from luarocks.

@hisham: I understand that. Nevertheless, as I said above, this "feature" causes me a lot of pain. I need a way to disable it.

from luarocks.