From 57f6447df5841b2e3dd9e541826ad8b6a3a273fd Mon Sep 17 00:00:00 2001
From: Theodore Ni <3806110+tjni@users.noreply.github.com>
Date: Sun, 6 Aug 2023 02:54:12 -0700
Subject: [PATCH] dcrd: fix tests when run on darwin

---
 pkgs/applications/blockchains/dcrd/default.nix | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/blockchains/dcrd/default.nix b/pkgs/applications/blockchains/dcrd/default.nix
index 75c00719215d..8a4369482fe6 100644
--- a/pkgs/applications/blockchains/dcrd/default.nix
+++ b/pkgs/applications/blockchains/dcrd/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildGoModule, fetchFromGitHub }:
+{ lib, buildGoModule, fetchFromGitHub, fetchpatch }:
 
 buildGoModule rec {
   pname = "dcrd";
@@ -11,10 +11,24 @@ buildGoModule rec {
     hash = "sha256-ZNBSIzx07zJrBxas7bHpZ8ZPDWJ4d7jumpKYj5Qmzlo=";
   };
 
+  patches = [
+    (fetchpatch {
+      name = "dcrd-appdata-env-variable.patch";
+      url = "https://github.com/decred/dcrd/pull/3152/commits/216132d7d852f3f2e2a6bf7f739f47ed62ac9387.patch";
+      hash = "sha256-R1GzP0qVP5XW1GnSJqFOpJVnwrVi/62tL1L2mc33+Dw=";
+    })
+  ];
+
   vendorHash = "sha256-++IPB2IadXd1LC5r6f1a0UqsTG/McAf7KQAw8WKKoaE=";
 
   subPackages = [ "." "cmd/promptsecret" ];
 
+  __darwinAllowLocalNetworking = true;
+
+  preCheck = ''
+    export DCRD_APPDATA="$TMPDIR"
+  '';
+
   meta = {
     homepage = "https://decred.org";
     description = "Decred daemon in Go (golang)";