Switch to Python 3 by default.

Addresses #5592.

Dockerfile-debian-python2-sqlite

@@ -58,7 +58,7 @@ USER www-data
 RUN git clone --depth=1 git://git.savannah.gnu.org/mediagoblin.git -b master .
 
 RUN ./bootstrap.sh
-RUN VIRTUALENV_FLAGS='--system-site-packages' ./configure
+RUN VIRTUALENV_FLAGS='--system-site-packages' ./configure --without-python3
 RUN make
 
 RUN ./bin/pip install scikits.audiolab

Dockerfile-debian-python3-sqlite

@@ -139,7 +139,7 @@ USER www-data
 RUN git clone --depth=1 git://git.savannah.gnu.org/mediagoblin.git -b master .
 
 RUN ./bootstrap.sh
-RUN VIRTUALENV_FLAGS='--system-site-packages' ./configure --with-python3
+RUN VIRTUALENV_FLAGS='--system-site-packages' ./configure
 RUN make
 
 # Only supported on Python 2.

Dockerfile-fedora-python3-sqlite

@@ -73,7 +73,7 @@ USER www-data
 RUN git clone --depth=1 git://git.savannah.gnu.org/mediagoblin.git -b master .
 
 RUN ./bootstrap.sh
-RUN VIRTUALENV_FLAGS='--system-site-packages' ./configure --with-python3
+RUN VIRTUALENV_FLAGS='--system-site-packages' ./configure
 RUN make
 
 # RUN echo '[[mediagoblin.media_types.audio]]' >> mediagoblin.ini

configure.ac

@@ -87,7 +87,7 @@ dnl----
 AC_ARG_WITH([python3],
 	[AS_HELP_STRING([--with-python3], [Set up to use Python 3 by default.])],
 	[],
-	[with_python3=no])
+	[with_python3=yes])
 AS_IF([test "x$with_python3" != xno],
         AC_CHECK_PROGS([PYTHON], [python3], [none])
         AC_SUBST([USE_PYTHON3], [true])

docs/source/siteadmin/deploying.rst

@@ -58,7 +58,7 @@ Dependencies
 MediaGoblin has the following core dependencies:
 
 - Python 2.7 or Python 3.4+
-- `python-lxml <http://lxml.de/>`_
+- `python3-lxml <http://lxml.de/>`_
 - `git <http://git-scm.com/>`_
 - `SQLite <http://www.sqlite.org/>`_/`PostgreSQL <http://www.postgresql.org/>`_
 - `Python Imaging Library <http://www.pythonware.com/products/pil/>`_  (PIL)
@@ -68,19 +68,19 @@ MediaGoblin has the following core dependencies:
 On a DEB-based system (e.g Debian, gNewSense, Trisquel, \*buntu, and
 derivatives) issue the following command::
 
-    sudo apt-get install git-core python python-dev python-lxml \
+    sudo apt-get install git-core python python3-dev python3-lxml \
-        python-imaging python-virtualenv npm nodejs-legacy automake \
+        python3-imaging python3-virtualenv npm nodejs-legacy automake \
         nginx rabbitmq-server
 
 On a RPM-based system (e.g. Fedora, RedHat, and derivatives) issue the
 following command::
 
-    sudo yum install python-paste-deploy python-paste-script \
+    sudo yum install python3-paste-deploy python3-paste-script \
-        git-core python python-devel python-lxml python-imaging \
+        git-core python python3-devel python3-lxml python3-imaging \
-        python-virtualenv npm automake nginx rabbitmq-server
+        python3-virtualenv npm automake nginx rabbitmq-server
 
-(Note: MediaGoblin now officially supports Python 3.  You may instead
+(Note: MediaGoblin now uses Python 3 by default. To use Python 2, you may instead
-substitute from "python" to "python3" for most package names in the
+substitute from "python3" to "python" for most package names in the
 Debian instructions and this should cover dependency installation.
 These instructions have not yet been tested on Fedora.)
 
@@ -103,11 +103,11 @@ Configure PostgreSQL
 
 These are the packages needed for Debian Jessie (stable)::
 
-    sudo apt-get install postgresql postgresql-client python-psycopg2
+    sudo apt-get install postgresql postgresql-client python3-psycopg2
 
 These are the packages needed for an RPM-based system::
 
-    sudo yum install postgresql postgresql-server python-psycopg2
+    sudo yum install postgresql postgresql-server python3-psycopg2
 
 An rpm-based system also requires that you initialize and start the
 PostgreSQL database with a few commands. The following commands are
@@ -256,8 +256,8 @@ Set up the hacking environment::
 
     $ ./bootstrap.sh && ./configure && make
 
-(Note that if you'd prefer to run MediaGoblin with Python 3, pass in
+(Note that if you'd prefer to run MediaGoblin with Python 2, pass in
-`--with-python3` to the `./configure` command.)
+`--without-python3` to the `./configure` command.)
 
 Create and set the proper permissions on the ``user_dev`` directory.
 This directory will be used to store uploaded media files::

docs/source/siteadmin/media-types.rst

@@ -84,7 +84,7 @@ good/bad/ugly).  On Debianoid systems
 
 .. code-block:: bash
 
-    sudo apt-get install python-gi python3-gi \
+    sudo apt-get install python3-gi \
         gstreamer1.0-tools \
         gir1.2-gstreamer-1.0 \
         gir1.2-gst-plugins-base-1.0 \
@@ -92,7 +92,7 @@ good/bad/ugly).  On Debianoid systems
         gstreamer1.0-plugins-ugly \
         gstreamer1.0-plugins-bad \
         gstreamer1.0-libav \
-        python-gst-1.0
+        python3-gst-1.0
 
 
 Add ``[[mediagoblin.media_types.video]]`` under the ``[plugins]`` section in
@@ -123,8 +123,8 @@ as whatever GStreamer plugins you want, good/bad/ugly), SciPy and NumPy are
 also needed for the audio spectrograms.
 To install these on Debianoid systems, run::
 
-    sudo apt-get install python-gst-1.0 gstreamer1.0-plugins-{base,bad,good,ugly} \
+    sudo apt-get install python3-gst-1.0 gstreamer1.0-plugins-{base,bad,good,ugly} \
-    gstreamer1.0-libav python-numpy python-scipy libsndfile1-dev libasound2-dev
+    gstreamer1.0-libav python3-numpy python3-scipy libsndfile1-dev libasound2-dev
 
 .. note::
     scikits.audiolab will display a warning every time it's imported if you do
@@ -160,7 +160,7 @@ To enable raw image you need to install pyexiv2.  On Debianoid systems
 
 .. code-block:: bash
 
-    sudo apt-get install python-pyexiv2
+    sudo apt-get install python3-pyexiv2
 
 Add ``[[mediagoblin.media_types.raw_image]]`` under the ``[plugins]``
 section in your ``mediagoblin.ini`` and restart MediaGoblin.