# Zon2Nix & ZigDeps: unable to connect to server: NameServerFailure
**URL:** https://discourse.nixos.org/t/zon2nix-zigdeps-unable-to-connect-to-server-nameserverfailure/80082
**Category:** Help
**Created:** [September 14, 2026, 3:40am UTC](https://discourse.nixos.org/t/zon2nix-zigdeps-unable-to-connect-to-server-nameserverfailure/80082 "2026-09-14T03:40:10Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@OulipianSummer](https://discourse.nixos.org/u/OulipianSummer)
#### Post date: [September 14, 2026, 3:40am UTC](https://discourse.nixos.org/t/zon2nix-zigdeps-unable-to-connect-to-server-nameserverfailure/80082/1 "2026-09-14T03:40:11Z")
I’m trying to package up [rhine](https://codeberg.org/sivecano/rhine) for the new [river compositor](https://search.nixos.org/packages?channel=26.05&query=river#show=river) and I’m running into an issue trying to pull zig dependencies from Codeberg.
No matter what method I use, either [zon2nix](https://github.com/nix-community/zon2nix) or [zig.deps](https://github.com/NixOS/nixpkgs/blob/c2c46e4dba17c167b7b892df46813863e0d10ae1/pkgs/by-name/fa/fast-cli-zig/package.nix#L19-L28), I end up getting the exact same build errors
```auto
error: builder for '/nix/store/y3hsr67y7awsvsh6xf36hsw3z3gs6w7q-rhine-0.3.0.drv' failed with exit code 1;
last 19 log lines:
> Using versionCheckHook
> Running phase: unpackPhase
> unpacking source archive /nix/store/jvd75z1h0ys2rd4b7xw7jqiblii7cida-source
> source root is source
> Running phase: patchPhase
> Running phase: updateAutotoolsGnuConfigScriptsPhase
> Running phase: configurePhase
> Running phase: buildPhase
> zig build flags: -j16 -Dcpu=baseline --release=safe
> /build/source/build.zig.zon:8:20: error: unable to connect to server: NameServerFailure
> .url = "https://codeberg.org/ifreund/zig-wayland/archive/v0.6.0.tar.gz",
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /build/source/build.zig.zon:12:20: error: unable to connect to server: NameServerFailure
> .url = "https://codeberg.org/Games-by-Mason/mr_tween/archive/v0.1.0.tar.gz",
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /build/source/build.zig.zon:16:20: error: unable to discover remote git server capabilities: NameServerFailure
> .url = "git+https://codeberg.org/Sivecano/libtributary#ad5ee12ecae34c6aac55c55eeffce50f85cb3856",
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
For full logs, run:
nix log /nix/store/y3hsr67y7awsvsh6xf36hsw3z3gs6w7q-rhine-0.3.0.drv
```
Here’s my (very rough) package.nix
```nix
{
lib,
pkgs,
...
}:
pkgs.stdenv.mkDerivation (finalAttrs: {
pname = "rhine";
version = "0.3.0";
strictDeps = true;
src = pkgs.fetchFromCodeberg {
#url = "https://codeberg.org/Sivecano/rhine/archive/${finalAttrs.version}.tar.gz";
#hash = "sha256-1urSOudD12Ge/hy3mGFfGNQAKLjqvuyV+cO1T4HloYs=";
owner = "Sivecano";
repo = "rhine";
tag = finalAttrs.version;
hash = "sha256-1urSOudD12Ge/hy3mGFfGNQAKLjqvuyV+cO1T4HloYs=";
};
nativeBuildInputs = with pkgs; [
zig_0_16
pkg-config
];
buildInputs = with pkgs; [
wayland-scanner
river
libxkbcommon
wayland
dbus
wayland-protocols
];
zigDeps = pkgs.zig_0_16.fetchDeps {
inherit (finalAttrs) src pname version;
hash = "sha256-wvnECiDfK17uKGySe2SYEkpHL0RdRQTlS+b8zGw2F9g=";
};
postConfigure = ''
ln -s ${finalAttrs.zigDeps} $ZIG_GLOBAL_CACHE_DIR/p
'';
nativeInstallCheckInputs = with pkgs; [versionCheckHook];
versionCheckProgramArg = "-version";
postInstall = ''
install rhine.desktop -Dt $out/share/wayland-sessions
'';
doCheck = true;
doInstallCheck = true;
})
```
And, although this exact package doesn’t utilize it, this is what my `build.zon.nix` file looks like when I decide to use zon2nix
```nix
# generated by zon2nix (https://github.com/nix-community/zon2nix)
{ linkFarm, fetchzip, fetchgit }:
linkFarm "zig-packages" [
{
name = "mr_tween-0.1.0-WbH78YcBAQD3RF4QfCYFF6EJCYzAzdIU4BHCj0pFI5yq";
path = fetchzip {
url = "https://codeberg.org/Games-by-Mason/mr_tween/archive/v0.1.0.tar.gz";
hash = "sha256-+f3klYdTikb7qoggebyOET+xHH9IuZt78MQTfpJOZjM=";
extension = "tar.gz";
};
}
{
name = "tributary-0.4.0-tqCfW5fFAAC_PBxqMMwGJRlbwU8XThn9b2zIieRvQgDX";
path = fetchgit {
url = "https://codeberg.org/Sivecano/libtributary";
rev = "ad5ee12ecae34c6aac55c55eeffce50f85cb3856";
hash = "sha256-PKtVtnUbfjOkAkYOaUCaMgAT/2rplMxFESgKNL9DFJk=";
};
}
{
name = "wayland-0.6.0-lQa1kqz8AQADQmdNJsNhLoNHcnEGEUjrOaPV-dtEnEmX";
path = fetchzip {
url = "https://codeberg.org/ifreund/zig-wayland/archive/v0.6.0.tar.gz";
hash = "sha256-3m/ITNhZUJ/5uD/Tqm+0uZSktGoYgWF5oldOqOCUkIE=";
extension = "tar.gz";
};
}
]
```
I tacked on the `extension` key for the zip archives after reading though [this issue](https://github.com/nix-community/zon2nix/issues/62) which also cued me into `zig.fetchDeps`. I also read [this discourse thread](https://discourse.nixos.org/t/how-should-we-package-zig-software/77409) discussing the current packaging workflow for zig, which gave me the resources for trying a few different dependency management methods, neither of which have worked.
After researching, I’m thoroughly convinced that this is a Codeberg issue (maybe too much bot prevention?). Am I missing something here that would make fetching these tarballs simply impossible using my current setup? Any help is appreciated.
---
### Author:  [@RossComputerGuy](https://discourse.nixos.org/u/RossComputerGuy)
#### Post date: [September 14, 2026, 3:44am UTC](https://discourse.nixos.org/t/zon2nix-zigdeps-unable-to-connect-to-server-nameserverfailure/80082/2 "2026-09-14T03:44:33Z")
I do recommend using fetchDeps, though you’re missing the preConfigure hook.
```nix
postConfigure = ''
ln -s $zigDeps $ZIG_GLOBAL_CACHE_DIR/p
'';
```
Also you don’t need to specify `.hook` since the hook will automatically be loaded in.
---
### Author:  [@OulipianSummer](https://discourse.nixos.org/u/OulipianSummer)
#### Post date: [September 14, 2026, 4:15am UTC](https://discourse.nixos.org/t/zon2nix-zigdeps-unable-to-connect-to-server-nameserverfailure/80082/3 "2026-09-14T04:15:22Z")
Ok, that’s certainly changed things as I’m getting different errors now. I must have had some typos the last time I tried this. I’ve also updated my horribly hacked up package.nix to reflect the file I’m using now.
```auto
b1kfzlvqiwbcpw4sd2j3v63vqab3vg-zig-0.16.0/lib/zig/ --listen=-
> install -C .zig-cache/o/33324a2b19574f0b2ea007a5d237ff02/rhine /build/source/zig-out/bin/rhine
> buildPhase completed in 1 minutes 31 seconds
> Running phase: checkPhase
> zig check flags: -j16 -Dcpu=baseline --release=safe
> pkg-config --variable=pkgdatadir wayland-scanner
> pkg-config --variable=pkgdatadir wayland-protocols
> pkg-config river-protocols --variable=pkgdatadir
> info: access the help menu with "zig build -h"
> error: no step named 'test'
> error: the following build command failed with exit code 1:
> .zig-cache/o/976000f9880524155d01cbf72ded8392/build /nix/store/kbb1kfzlvqiwbcpw4sd2j3v63vqab3vg-zig-0.16.0/bin/zig /nix/store/kbb1kfzlvqiwbcpw4sd2j3v63vqab3vg-zig-0.16.0/lib/zig /build/source .zig-cache /build/tmp.fQEaZFXn3A --seed 0x1c25174f -Z7908611a75f81679 test -j16 -Dcpu=baseline --release=safe --verbose
For full logs, run:
nix log /nix/store/1iqqsf6bfy9invi4jgfdadad4np4kdq4-rhine-0.3.0.drv
```
---
### Author:  [@RossComputerGuy](https://discourse.nixos.org/u/RossComputerGuy)
#### Post date: [September 14, 2026, 4:17am UTC](https://discourse.nixos.org/t/zon2nix-zigdeps-unable-to-connect-to-server-nameserverfailure/80082/4 "2026-09-14T04:17:13Z")
Ah yeah, there’s no unit tests so just `doCheck = false`.
---
### Author:  [@OulipianSummer](https://discourse.nixos.org/u/OulipianSummer)
#### Post date: [September 14, 2026, 4:20am UTC](https://discourse.nixos.org/t/zon2nix-zigdeps-unable-to-connect-to-server-nameserverfailure/80082/5 "2026-09-14T04:20:59Z")
Oof. It’s been a long day. Of _course_ that’s the fix.
Ok. I got a successful build off of this, so I’m marking it solved. Thanks for your help!