From 830ca266448dd9436cb3b8e16da46f8b255c7c47 Mon Sep 17 00:00:00 2001
From: Enno Boland <gottox@voidlinux.eu>
Date: Mon, 21 Mar 2016 20:30:39 +0100
Subject: [PATCH] hooks/post-install: add hook to rewrite unversioned python
 shebangs.

---
 .../post-install/07-rewrite-python-shebang.sh | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 common/hooks/post-install/07-rewrite-python-shebang.sh

diff --git a/common/hooks/post-install/07-rewrite-python-shebang.sh b/common/hooks/post-install/07-rewrite-python-shebang.sh
new file mode 100644
index 0000000000..06c94dddec
--- /dev/null
+++ b/common/hooks/post-install/07-rewrite-python-shebang.sh
@@ -0,0 +1,27 @@
+# This hook executes the following tasks:
+#	- rewrites python shebangs with the corresponding python version
+
+hook() {
+	local pyver= shebang= warn=
+
+	for i in $python_versions; do
+		if [ "$pyver" ]; then
+			warn=1
+			break;
+		fi
+		pyver=$i
+	done
+
+	: ${pyver:=2.7}
+	shebang="#!/usr/bin/python$pyver"
+	find ${PKGDESTDIR} -type f -print0 | \
+		xargs -0 grep -l -m 1 "^#!.*\([[:space:]]\|/\)python\([[:space:]]\|$\)" -- | while read f; do
+		if [ "$warn" ]; then
+			msg_warn "$pkgname: multiple python versions defined!"
+			msg_warn "$pkgname: using $pyver for shebang"
+			warn=
+		fi
+		echo "   Unversioned shebang replaced by '$shebang': ${f#$PKGDESTDIR}"
+		sed -i "1s@.*python@${shebang}@" -- "$f"
+	done
+}