Hello, I am trying to package a Go application however I ran into an error I've never seen before and can't seem to find anything online

        github.com/hrfee/jfa-go/docs: is replaced in go.mod, but not marked as replaced in vendor/modules.txt
        github.com/hrfee/jfa-go/common: is replaced in go.mod, but not marked as replaced in vendor/modules.txt
        github.com/hrfee/jfa-go/ombi: is replaced in go.mod, but not marked as replaced in vendor/modules.txt
        github.com/hrfee/jfa-go/logger: is replaced in go.mod, but not marked as replaced in vendor/modules.txt
        github.com/hrfee/jfa-go/linecache: is replaced in go.mod, but not marked as replaced in vendor/modules.txt
        github.com/hrfee/jfa-go/api: is replaced in go.mod, but not marked as replaced in vendor/modules.txt
        github.com/hrfee/jfa-go/easyproxy: is replaced in go.mod, but not marked as replaced in vendor/modules.txt

        To ignore the vendor directory, use -mod=readonly or -mod=mod.
        To sync the vendor directory, run:
                go mod vendor

That is the error I am getting and here is my current derivation

{
  lib,
  buildGoModule,
  fetchFromGitHub,
  pkg-config,
  libayatana-appindicator,
  go-swag,
}:
buildGoModule rec {
  pname = "jfa-go";
  version = "0.5.1";

  src = fetchFromGitHub {
    owner = "hrfee";
    repo = "jfa-go";
    rev = "v${version}";
    hash = "sha256-7F0cPTG3LuZQk5AT5V5UwW9+dX25aGS8RDYi62CGDR8=";
  };
  vendorHash = "sha256-JC9d/FDG6hadkX1ywJ120BAsVkg/xMt9sUkh/DHModI=";

  nativeBuildInputs = [
    pkg-config
    go-swag
  ];

  buildInputs = [
    libayatana-appindicator
  ];

  preBuild = ''
    swag init -g main.go -d ${src}/
  '';

  ldflags = [
    "-X=main.version=v${version}"
    "-X=main.commit=${src.rev}"
    "-X=main.updater=binary"
    "-X=main.cssVersion=v3"
    "-X=main.builtBy=Nix"
  ];

  meta = {
    description = "A bit-of-everything user managament app for Jellyfin";
    homepage = "https://github.com/hrfee/jfa-go/tree/main";
    license = lib.licenses.mit;
    maintainers = with lib.maintainers; [saturn745];
    mainProgram = "jfa-go";
  };
}

Does anybody have any ideas?

Saturn: The error your quoting doesn't seem to be the fatal one. Rather the build of internal.go seems to fail:

jfa-go> Building subPackage .
jfa-go> internal.go:13:12: pattern data: no matching files found

internal.go has a build tag !external, so it seems like this shouldn't be build by nix.

Also check the Makefile, where they control this build tag: https://github.com/hrfee/jfa-go/blob/main/Makefile#L35-L42

So add tags = [ "external" ];

Next error you will face is

jfa-go> Building subPackage .
jfa-go> Building subPackage ./common
jfa-go> main module (github.com/hrfee/jfa-go) does not contain package github.com/hrfee/jfa-go/common

As this is a multi-module repository ./common cannot be build, you can use subPackages so that only the top level package is build:

subPackages = [ "." ];

Saturn: The error your quoting doesn't seem to be the fatal one. Rather the build of internal.go seems to fail:

jfa-go> Building subPackage .
jfa-go> internal.go:13:12: pattern data: no matching files found

internal.go has a build tag !external, so it seems like this shouldn't be build by nix.

Also check the Makefile, where they control this build tag: https://github.com/hrfee/jfa-go/blob/main/Makefile#L35-L42

So add tags = [ "external" ];

Next error you will face is

jfa-go> Building subPackage .
jfa-go> Building subPackage ./common
jfa-go> main module (github.com/hrfee/jfa-go) does not contain package github.com/hrfee/jfa-go/common

As this is a multi-module repository ./common cannot be build, you can use subPackages so that only the top level package is build:

subPackages = [ "." ];

Then it builds for me successfully. :)