From 8e7bbb7d4f70957f1bb7ed049cb038236be58bf7 Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Fri, 17 Jan 2020 01:44:33 +0100
Subject: [PATCH] postfix: fix build w/glibc 2.30

---
 .../0001-Fix-build-with-glibc-2.30.patch      | 34 +++++++++++++++++++
 pkgs/servers/mail/postfix/default.nix         |  1 +
 2 files changed, 35 insertions(+)
 create mode 100644 pkgs/servers/mail/postfix/0001-Fix-build-with-glibc-2.30.patch

diff --git a/pkgs/servers/mail/postfix/0001-Fix-build-with-glibc-2.30.patch b/pkgs/servers/mail/postfix/0001-Fix-build-with-glibc-2.30.patch
new file mode 100644
index 00000000000..9613b8906a0
--- /dev/null
+++ b/pkgs/servers/mail/postfix/0001-Fix-build-with-glibc-2.30.patch
@@ -0,0 +1,34 @@
+From a6a61d0dc018101a9a8d0a664f31140d7e38db0e Mon Sep 17 00:00:00 2001
+From: Maximilian Bosch <maximilian@mbosch.me>
+Date: Fri, 17 Jan 2020 01:42:40 +0100
+Subject: [PATCH] Fix build with glibc 2.30
+
+https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1842923
+---
+ src/dns/dns_str_resflags.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/src/dns/dns_str_resflags.c b/src/dns/dns_str_resflags.c
+index 5f2cce5..df32345 100644
+--- a/src/dns/dns_str_resflags.c
++++ b/src/dns/dns_str_resflags.c
+@@ -60,10 +60,16 @@ static const LONG_NAME_MASK resflag_table[] = {
+     "RES_DEFNAMES", RES_DEFNAMES,
+     "RES_STAYOPEN", RES_STAYOPEN,
+     "RES_DNSRCH", RES_DNSRCH,
++#ifdef RES_INSECURE1
+     "RES_INSECURE1", RES_INSECURE1,
++#endif
++#ifdef RES_INSECURE2
+     "RES_INSECURE2", RES_INSECURE2,
++#endif
+     "RES_NOALIASES", RES_NOALIASES,
++#ifdef RES_USE_INET6
+     "RES_USE_INET6", RES_USE_INET6,
++#endif
+ #ifdef RES_ROTATE
+     "RES_ROTATE", RES_ROTATE,
+ #endif
+-- 
+2.23.1
+
diff --git a/pkgs/servers/mail/postfix/default.nix b/pkgs/servers/mail/postfix/default.nix
index c0e6252a551..d797a9ec9a3 100644
--- a/pkgs/servers/mail/postfix/default.nix
+++ b/pkgs/servers/mail/postfix/default.nix
@@ -48,6 +48,7 @@ in stdenv.mkDerivation rec {
     ./postfix-3.0-no-warnings.patch
     ./post-install-script.patch
     ./relative-symlinks.patch
+    ./0001-Fix-build-with-glibc-2.30.patch
   ];
 
   postPatch = stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''