Update pelican_quickstart.py

Have pelican_quickstart generate a requirements.txt

pelican/tools/pelican_quickstart.py

@@ -8,9 +8,9 @@ import locale
 import os
 import sys
 
-from jinja2 import Environment, FileSystemLoader
-
+import pkg_resources
 import pytz
+from jinja2 import Environment, FileSystemLoader
 
 try:
     import readline  # NOQA
@@ -19,6 +19,7 @@ except ImportError:
 
 try:
     import tzlocal
+
     _DEFAULT_TIMEZONE = tzlocal.get_localzone().zone
 except ImportError:
     _DEFAULT_TIMEZONE = 'Europe/Paris'
@@ -45,7 +46,6 @@ _jinja_env = Environment(
     trim_blocks=True,
 )
 
-
 _GITHUB_PAGES_BRANCHES = {
     'personal': 'master',
     'project': 'gh-pages'
@@ -111,6 +111,7 @@ def decoding_strings(f):
             else:
                 return out.decode(sys.stdin.encoding)
         return out
+
     return wrapper
 
 
@@ -189,6 +190,14 @@ def ask(question, answer=str_compat, default=None, length=None):
             'Argument `answer` must be str_compat, bool, or integer')
 
 
+def write_requirements_txt():
+    distribution = pkg_resources.working_set.by_key['pelican']
+    with open(os.path.join(CONF['basedir'], 'requirements.txt'), 'w') as f:
+        f.write('{}\n'.format(distribution.as_requirement()))
+        for dependency in sorted(distribution.requires()):
+            f.write('{}\n'.format(dependency))
+
+
 def ask_timezone(question, default, tzurl):
     """Prompt for time zone and validate input"""
     lower_tz = [tz.lower() for tz in pytz.all_timezones]
@@ -361,6 +370,8 @@ needed by Pelican.
             fd.close()
     except OSError as e:
         print('Error: {0}'.format(e))
+    
+    write_requirements_txt()
 
     if automation:
         try: