From cf70c86d072cab7b7cc5da2d023a58b12ccb9854 Mon Sep 17 00:00:00 2001
From: Philip Nelson <me@pnelson.ca>
Date: Fri, 1 May 2020 18:49:22 -0700
Subject: [PATCH 1/2] nextdns: init at 1.7.0

1.7.0
---
 .../networking/nextdns/default.nix            | 24 +++++++++++++++++++
 pkgs/top-level/all-packages.nix               |  2 ++
 2 files changed, 26 insertions(+)
 create mode 100644 pkgs/applications/networking/nextdns/default.nix

diff --git a/pkgs/applications/networking/nextdns/default.nix b/pkgs/applications/networking/nextdns/default.nix
new file mode 100644
index 000000000000..40ca27c70b03
--- /dev/null
+++ b/pkgs/applications/networking/nextdns/default.nix
@@ -0,0 +1,24 @@
+{ buildGoModule, fetchFromGitHub, lib }:
+
+buildGoModule rec {
+  pname = "nextdns";
+  version = "1.7.0";
+
+  src = fetchFromGitHub {
+    owner = "nextdns";
+    repo = "nextdns";
+    rev = "v${version}";
+    sha256 = "15xw8d6b9rv0lalzfllixm8n89clz9j8ag1gk4r16k7yv5l6xrpd";
+  };
+
+  vendorSha256 = "09whpzsn16znyrknfm5zlhla253r69j6d751czza4c83m4r36swj";
+
+  buildFlagsArray = [ "-ldflags=-s -w -X main.version=${version}" ];
+
+  meta = with lib; {
+    description = "NextDNS DNS/53 to DoH Proxy";
+    homepage = "https://nextdns.io";
+    license = licenses.mit;
+    maintainers = with maintainers; [ pnelson ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4d88c63bcfb0..5b1c7f9fb852 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2102,6 +2102,8 @@ in
 
   mq-cli = callPackage ../tools/system/mq-cli { };
 
+  nextdns = callPackage ../applications/networking/nextdns { };
+
   nfdump = callPackage ../tools/networking/nfdump { };
 
   nfstrace = callPackage ../tools/networking/nfstrace { };

From 81034b583c445765ae1b3d01a8d017967fc36129 Mon Sep 17 00:00:00 2001
From: Philip Nelson <me@pnelson.ca>
Date: Fri, 1 May 2020 18:49:46 -0700
Subject: [PATCH 2/2] nixos/nextdns: init

---
 nixos/modules/module-list.nix                 |  1 +
 nixos/modules/services/networking/nextdns.nix | 44 +++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 nixos/modules/services/networking/nextdns.nix

diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 0dba92f60c7e..d562dce3b1bc 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -668,6 +668,7 @@
   ./services/networking/nat.nix
   ./services/networking/ndppd.nix
   ./services/networking/networkmanager.nix
+  ./services/networking/nextdns.nix
   ./services/networking/nftables.nix
   ./services/networking/ngircd.nix
   ./services/networking/nghttpx/default.nix
diff --git a/nixos/modules/services/networking/nextdns.nix b/nixos/modules/services/networking/nextdns.nix
new file mode 100644
index 000000000000..a633bff62ec7
--- /dev/null
+++ b/nixos/modules/services/networking/nextdns.nix
@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.nextdns;
+in {
+  options = {
+    services.nextdns = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Whether to enable the NextDNS DNS/53 to DoH Proxy service.";
+      };
+      arguments = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        example = [ "-config" "10.0.3.0/24=abcdef" ];
+        description = "Additional arguments to be passed to nextdns run.";
+      };
+    };
+  };
+
+  # https://github.com/nextdns/nextdns/blob/628ea509eaaccd27adb66337db03e5b56f6f38a8/host/service/systemd/service.go
+  config = mkIf cfg.enable {
+    systemd.services.nextdns = {
+      description = "NextDNS DNS/53 to DoH Proxy";
+      environment = {
+        SERVICE_RUN_MODE = "1";
+      };
+      serviceConfig = {
+        StartLimitInterval = 5;
+        StartLimitBurst = 10;
+        ExecStart = "${pkgs.nextdns}/bin/nextdns run ${escapeShellArgs config.services.nextdns.arguments}";
+        RestartSec = 120;
+        LimitMEMLOCK = "infinity";
+      };
+      after = [ "network.target" ];
+      before = [ "nss-lookup.target" ];
+      wants = [ "nss-lookup.target" ];
+      wantedBy = [ "multi-user.target" ];
+    };
+  };
+}