In reply to @diamondburned:matrix.org
could you try overrideAttrs-ing that with modBuildPhase = (old.modBuildPhase) + "go mod tidy && go mod vendor"?

I ended up seeing the same error :(

Which doesn't make much sense because I see the plugins are down before hand

In reply to @diamondburned:matrix.org
could you try overrideAttrs-ing that with modBuildPhase = (old.modBuildPhase) + "go mod tidy && go mod vendor"?

I ended up seeing the same error :(

Which doesn't make much sense because I see the plugins are down before hand https://github.com/NixOS/nixpkgs/blob/58a1abdbae3217ca6b702f03d3b35125d88a2994/pkgs/servers/dns/coredns/default.nix#L33

I've opened a bug report here https://github.com/NixOS/nixpkgs/issues/307750

I also tried taking a overlay approach in a more manual manner to understand what's breaking where but it seems like my modBuildPhase isn't detected

  modifications = final: prev: {
    coredns-snowflake = prev.coredns.overrideAttrs (oldAttrs: {
        vendorHash = "";
        modBuildPhase = (oldAttrs.modBuildPhase) + ''
          echo blocklist:github.com/relekang/coredns-blocklist >> plugin.cfg
          echo tailscale:github.com/damomurf/coredns-tailscale >> plugin.cfg
          echo k8s_gateway:github.com/ori-edge/k8s_gateway >> plugin.cfg
          go mod tidy
          go mod vendor
          GOOS= GOARCH= go generate
          go mod tidy
          go mod vendor
      '';
    });
  };

The go command now disables cgo by default on systems without a C toolchain. More specifically, when the CGOENABLED environment variable is unset, the CC environment variable is unset, and the default C compiler (typically clang or gcc) is not found in the path, CGOENABLED defaults to 0. As always, you can override the default by setting CGO_ENABLED explicitly.