nix-store and libcurl 7.55.0 hostname resolution troubles

[nlewo]

On nixpkgs master, nix is using libcurl 7.55.0 since 15 days.
If there is no nscd deamon up and running, libcurl sends the dns request to localhost. The strace of nix-store shows it doesn't try to open /etc/resolv.conf. It seems it then fallback to localhost.

I have tryied to curl the url that nix-store fails to download and it works fine with curl 7.55.0. So the problem could be related to the libcurl initialisation in nix-store.

If nix-store uses the libcurl 7.54.1 or 7.53.0, it can resolve hostname without the nscd deamon.

[nlewo]

To reproduce, I just have to stop the nscd deamon and try to realize something that has not been yet built.

[stale]

I marked this as stale due to inactivity. → More info