Add dependency on jinja2.

README.asciidoc

@@ -74,6 +74,7 @@ The following software and libraries are required to run qutebrowser:
 (5.3.1 recommended) for Python 3
 * https://pypi.python.org/pypi/setuptools/[pkg_resources/setuptools]
 * http://fdik.org/pyPEG/[pyPEG2]
+* http://jinja.pocoo.org/[jinja2]
 
 The following libraries are optional and provide colored logging in the
 console:
@@ -85,7 +86,8 @@ On Debian
 ~~~~~~~~~
 
 ----
-# apt-get install python3-pyqt5 python3-pyqt5.qtwebkit python3-pkg-resources python3-pip
+# apt-get install python3-pyqt5 python3-pyqt5.qtwebkit python3-pkg-resources
+python3-pip python3-jinja2
 # pip3 install pypeg2 --allow-external pypeg2 --allow-unverified pypeg2
 ----
 
@@ -129,6 +131,7 @@ to get Qt and PyQt5.
 * Get pip as described http://stackoverflow.com/a/12476379[on Stack Overflow].
 * Run +pip install --allow-external pypeg2 --allow-unverified pypeg2 pypeg2+ to
 install pypeg2.
+* Run +pip install jinja2+ to install jinja2.
 
 As soon as v0.1 is out, a standalone .exe (built with
 http://cx-freeze.sourceforge.net/[cx_Freeze]) will be provided. In the

pkg/PKGBUILD.qutebrowser-git

@@ -9,7 +9,7 @@ arch=(any)
 url="http://www.qutebrowser.org/"
 license=('GPL')
 depends=('python>=3.4' 'python-setuptools' 'python-pyqt5>=5.2' 'qt5-base>=5.2'
-         'qt5-webkit>=5.2' 'libxkbcommon-x11' 'python-pypeg2')
+         'qt5-webkit>=5.2' 'libxkbcommon-x11' 'python-pypeg2' 'python-jinja')
 makedepends=('python' 'python-setuptools')
 optdepends=('python-colorlog: colored logging output')
 options=(!emptydirs)

qutebrowser/qutebrowser.py

@@ -112,6 +112,7 @@ def main():
     earlyinit.check_pyqt_webkit()
     earlyinit.check_pkg_resources()
     earlyinit.check_pypeg2()
+    earlyinit.check_jinja2()
     # We do this import late as we need to fix harfbuzz first.
     from qutebrowser import app
     from qutebrowser.utils import debug

qutebrowser/utils/earlyinit.py

@@ -248,3 +248,17 @@ def check_pypeg2():
                             pip="pypeg2 --allow-external pypeg2 "
                                 "--allow-unverified pypeg2")
         _die(text)
+
+
+def check_jinja2():
+    """Check if jinja2 is installed."""
+    try:
+        import jinja2  # pylint: disable=unused-variable
+    except ImportError:
+        text = _missing_str("jinja2",
+                            debian="apt-get install python3-jinja2",
+                            arch="Install python-jinja from the AUR",
+                            windows="Install from http://www.lfd.uci.edu/"
+                                    "~gohlke/pythonlibs/#jinja2 or via pip.",
+                            pip="jinja2")
+        _die(text)

qutebrowser/utils/version.py

@@ -179,6 +179,13 @@ def _module_versions():
     else:
         ver = getattr(pypeg2, '__version__', 'yes')
         lines.append('pypeg2: {}'.format(ver))
+    try:
+        import jinja2
+    except ImportError:
+        pass
+    else:
+        ver = getattr(jinja2, '__version__', 'yes')
+        lines.append('jinja2: {}'.format(ver))
     return lines
 
 

scripts/setupcommon.py

@@ -98,7 +98,7 @@ setupdata = {
     'description': _get_constant('description'),
     'long_description': read_file('README.asciidoc'),
     'url': 'http://www.qutebrowser.org/',
-    'requires': ['pypeg2'],
+    'requires': ['pypeg2', 'jinja2'],
     'author': _get_constant('author'),
     'author_email': _get_constant('email'),
     'license': _get_constant('license'),

setup.py

@@ -47,7 +47,7 @@ try:
                       ['qutebrowser = qutebrowser.qutebrowser:main']},
         test_suite='qutebrowser.test',
         zip_safe=True,
-        install_requires=['pypeg2'],
+        install_requires=['pypeg2', 'jinja2'],
         extras_require={'nice-debugging': ['colorlog', 'colorama'],
                         'checks': ['flake8', 'pylint', 'check-manifest',
                                    'pyroma']},