rst: Use Python 3 instead of Python 2

Signed-off-by: Simon McVittie <smcv@debian.org>

.gitignore

@@ -13,6 +13,7 @@ pm_to_blib
 /MYMETA.json
 /MYMETA.yml
 *.man
+/plugins/__pycache__/
 /po/cover_db
 /po/html/
 po/po2wiki_stamp

CHANGELOG

@@ -9,6 +9,7 @@ ikiwiki (3.20180106) UNRELEASED; urgency=medium
     Discount >= 2.2.0 (Closes: #888055)
   * img: Fix auto-detection of image format (if enabled, which is
     strongly discouraged) with ImageMagick >= 6.9.8-3
+  * rst: Use Python 3 instead of Python 2
   * build: `set -e` before each `for` loop, so that errors are reliably
     trapped
   * build: Use if/then instead of `||` so that the `-e` flag works

debian/control

@@ -96,8 +96,8 @@ Suggests:
  libxml-writer-perl,
  po4a (>= 0.35-1),
  polygen,
- python,
+ python3,
- python-docutils,
+ python3-docutils,
  texlive,
  tidy,
  viewvc | gitweb | viewcvs,

doc/todo/consider_using_python3_for_rst_plugin.mdwn

@@ -23,3 +23,5 @@ change upstream immediately to give other maintainers a chance to comment. Thoug
 > change to ikiwiki. Can't attest for other situations, but am generally
 > biased toward biting future bullets as early as possible.
 > --[[schmonz]]
+
+>> Nobody objected, so it's now python3 for the next release. [[done]] --[[smcv]]

plugins/proxy.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
 # proxy.py — helper for Python-based external (xml-rpc) ikiwiki plugins

plugins/pythondemo

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
 # pythondemo — demo Python ikiwiki plugin

plugins/rst

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
 # rst — xml-rpc-based ikiwiki plugin to process RST files