From 446e01f62eb4b898564e7eb77a8219e580071329 Mon Sep 17 00:00:00 2001
From: azban <me@azban.net>
Date: Thu, 26 Mar 2026 11:37:41 -0600
Subject: [PATCH] openvpn3: 25 -> 27

(cherry picked from commit 4c6f13b25944ab8283e046d9f627b6b538b652ee)
---
 pkgs/by-name/op/openvpn3/package.nix          | 27 +++++++++++++++----
 .../op/openvpn3/v25-latest-linux-fix.patch    | 27 -------------------
 2 files changed, 22 insertions(+), 32 deletions(-)
 delete mode 100644 pkgs/by-name/op/openvpn3/v25-latest-linux-fix.patch

diff --git a/pkgs/by-name/op/openvpn3/package.nix b/pkgs/by-name/op/openvpn3/package.nix
index 58e4e73c1284..1e02705d6a55 100644
--- a/pkgs/by-name/op/openvpn3/package.nix
+++ b/pkgs/by-name/op/openvpn3/package.nix
@@ -1,9 +1,11 @@
 {
   lib,
   stdenv,
+  fetchurl,
   fetchFromGitHub,
   asio_1_32_0,
   glib,
+  fmt_11,
   jsoncpp,
   libcap_ng,
   libnl,
@@ -23,29 +25,42 @@
   cmake,
   git,
   nix-update-script,
+  unzip,
   enableSystemdResolved ? true,
 }:
-
+let
+  # Derived from subprojects/fmt.wrap
+  libfmt-meson-patch = fetchurl {
+    url = "https://wrapdb.mesonbuild.com/v2/fmt_11.2.0-1/get_patch";
+    hash = "sha256-ZFvxwzWiRgi0s08W7RC5I3u7ATFIhmj7hkVCAiOeCGw=";
+  };
+in
 stdenv.mkDerivation rec {
   pname = "openvpn3";
-  version = "25";
+  version = "27";
 
   src = fetchFromGitHub {
     owner = "OpenVPN";
     repo = "openvpn3-linux";
     tag = "v${version}";
-    hash = "sha256-Fme8OT49h2nZw5ypyeKdHlqv2Hk92LW2KVisd0jC66s=";
+    hash = "sha256-H+QF0Z1IUKx2U0+V7KHaAd/AKbuJEKLIwqyK2srD8DM=";
     # `openvpn3-core` is a submodule.
     # TODO: make it into a separate package
     fetchSubmodules = true;
   };
 
   patches = [
-    # Should be fixed in v26: https://codeberg.org/OpenVPN/openvpn3-linux/issues/70
-    ./v25-latest-linux-fix.patch
     ./0001-handle-result-from-DcoKeyConfig_ParseFromString.patch
   ];
 
+  prePatch = ''
+    cp -r ${fmt_11.src} subprojects/fmt-11.2.0
+    chmod +w -R subprojects/fmt-11.2.0 # Allow patches for subprojects to work
+    tmp=$(mktemp -d)
+    unzip ${libfmt-meson-patch} -d $tmp
+    cp -r $tmp/*/* subprojects/fmt-11.2.0
+  '';
+
   postPatch = ''
     echo '#define OPENVPN_VERSION "3.git:unknown:unknown"
     #define PACKAGE_GUIVERSION "v${builtins.replaceStrings [ "_" ] [ ":" ] version}"
@@ -72,6 +87,7 @@ stdenv.mkDerivation rec {
     pkg-config
     cmake
     git
+    unzip
 
     python3.pkgs.wrapPython
     python3.pkgs.docutils
@@ -107,6 +123,7 @@ stdenv.mkDerivation rec {
     (lib.mesonOption "dbus_policy_dir" "${placeholder "out"}/share/dbus-1/system.d")
     (lib.mesonOption "dbus_system_service_dir" "${placeholder "out"}/share/dbus-1/system-services")
     (lib.mesonOption "systemd_system_unit_dir" "${placeholder "out"}/lib/systemd/system")
+    (lib.mesonOption "systemd_user_unit_dir" "${placeholder "out"}/lib/systemd/user")
     (lib.mesonOption "create_statedir" "false")
     (lib.mesonOption "sharedstatedir" "/etc")
   ];
diff --git a/pkgs/by-name/op/openvpn3/v25-latest-linux-fix.patch b/pkgs/by-name/op/openvpn3/v25-latest-linux-fix.patch
deleted file mode 100644
index 65577548730f..000000000000
--- a/pkgs/by-name/op/openvpn3/v25-latest-linux-fix.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-diff --git a/openvpn3-core/openvpn/dco/ovpn_dco_linux.h b/openvpn3-core/openvpn/dco/ovpn_dco_linux.h
-index 238f71f7a..5b7fe8d8c 100644
---- a/openvpn3-core/openvpn/dco/ovpn_dco_linux.h
-+++ b/openvpn3-core/openvpn/dco/ovpn_dco_linux.h
-@@ -239,22 +239,6 @@ enum ovpn_netlink_packet_attrs {
- 	OVPN_PACKET_ATTR_MAX = __OVPN_PACKET_ATTR_AFTER_LAST - 1,
- };
- 
--enum ovpn_ifla_attrs {
--	IFLA_OVPN_UNSPEC = 0,
--	IFLA_OVPN_MODE,
--
--	__IFLA_OVPN_AFTER_LAST,
--	IFLA_OVPN_MAX = __IFLA_OVPN_AFTER_LAST - 1,
--};
--
--enum ovpn_mode {
--	__OVPN_MODE_FIRST = 0,
--	OVPN_MODE_P2P = __OVPN_MODE_FIRST,
--	OVPN_MODE_MP,
--
--	__OVPN_MODE_AFTER_LAST,
--};
--
- /// \endcond
- 
- #endif /* _UAPI_LINUX_OVPN_DCO_H_ */