From 28a22968dcd424a793dde3f7d95803fe52916da2 Mon Sep 17 00:00:00 2001
From: Jamie Hewland <jhewland@gmail.com>
Date: Fri, 6 Jul 2018 19:43:11 +0200
Subject: [PATCH] Fix nis library condition

---
 3.4/alpine3.7/Dockerfile | 2 --
 3.5/alpine3.7/Dockerfile | 2 --
 update.sh                | 7 ++++---
 3 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/3.4/alpine3.7/Dockerfile b/3.4/alpine3.7/Dockerfile
index eb9f5b112..eed4994f9 100644
--- a/3.4/alpine3.7/Dockerfile
+++ b/3.4/alpine3.7/Dockerfile
@@ -46,10 +46,8 @@ RUN set -ex \
 		gdbm-dev \
 		libc-dev \
 		libffi-dev \
-		libnsl-dev \
 		libressl \
 		libressl-dev \
-		libtirpc-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
diff --git a/3.5/alpine3.7/Dockerfile b/3.5/alpine3.7/Dockerfile
index d3e95d4c5..b38c4027f 100644
--- a/3.5/alpine3.7/Dockerfile
+++ b/3.5/alpine3.7/Dockerfile
@@ -46,10 +46,8 @@ RUN set -ex \
 		gdbm-dev \
 		libc-dev \
 		libffi-dev \
-		libnsl-dev \
 		libressl \
 		libressl-dev \
-		libtirpc-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
diff --git a/update.sh b/update.sh
index 11683d650..9aac170aa 100755
--- a/update.sh
+++ b/update.sh
@@ -159,9 +159,10 @@ for version in "${versions[@]}"; do
 			sed -ri -e 's/libressl/openssl/g' "$dir/Dockerfile"
 		fi
 
-		# Libraries to build the nis module available in Alpine 3.7, but also require this patch:
-		# https://bugs.python.org/issue32521
-		if [[ "$variant" == alpine* ]] && [[ "$variant" != alpine3.7 ]]; then
+		# Libraries to build the nis module only available in Alpine 3.7+.
+		# Also require this patch https://bugs.python.org/issue32521 only available in Python 2.7, 3.6+.
+		if [[ "$variant" == alpine* ]] && [[ "$version" == 3.4* || "$version" == 3.5* ]] \
+				|| [[ "$variant" == alpine3.6 ]]; then
 			sed -ri -e '/libnsl-dev/d' -e '/libtirpc-dev/d' "$dir/Dockerfile"
 		fi