warning: dumping very large path (> 256 MiB); this may run out of memory

[Pitometsu]

When I open nix-shell with derivation I got this warning.
So what I may did do wrong?
In case if this is wrong place for such questions, please, target me to something like NixOS forum. Thanks.

[vcunat]

Duplicate of NixOS/nix#602

[vcunat]

It's actually nothing wrong, really. Just a warning that our implementation isn't very memory-efficient which can cause problems in very rare cases (huge files in /nix/store).

[peti]

@Pitometsu, you should probably ask these questions in the IRC channel #nixos on irc.freenode.net.

[Pitometsu]

@vcunat anyway it shouldn't have warnings than, it confuse. Shouldn't it be labeled as bug at least with low-priority?

[vcunat]

It is an enhancement/bug with low priority. The warning is there so that you're not confused by silently running out of RAM.

[mogorman]

I disagree. I think it is a beneficial warning.

[Pitometsu]

This warning looks like I do something wrong, it confused me :)
Probably if it was like "Just relax and keep calm, after few seconds shell will take some amount of your RAM, it's ok, RAM eating in progress..." I would not be worried :D