jinja error in winrepo state file

gistfile1.txt

{% if grains['osarch'] == "64-bit" %}
{% set uninstaller = "C:\Program Files (x86)\Mozilla Firefox\uninstall\helper.exe" %}
{% else %}
{% set uninstaller = "C:\Program Files\Mozilla Firefox\uninstall\helper.exe" %}
{% endif %}
 
Firefox:
26.0:
installer: 'salt://win/repo/bin/firefox/Firefox Setup 26.0.exe'
full_name: 'Mozilla Firefox 26.0 (x86 en-US)'
reboot: False
install_flags: ' /s '
uninstaller: {{ uninstaller }}
uninstall_flags: ' /S'

gistfile2.txt

salt-run winrepo.genrepo
[ERROR   ] An un-handled exception was caught by salt's global exception handler:
ScannerError: while scanning for the next token
found character '%' that cannot start any token
  in "<string>", line 1, column 2:
    {% if grains['osarch'] == "64-bit" %}
     ^
Traceback (most recent call last):
  File "/usr/bin/salt-run", line 10, in <module>
    salt_run()
  File "/usr/lib/python2.7/dist-packages/salt/scripts.py", line 95, in salt_run
    client.run()
  File "/usr/lib/python2.7/dist-packages/salt/cli/__init__.py", line 357, in run
    runner.run()
  File "/usr/lib/python2.7/dist-packages/salt/runner.py", line 219, in run
    self.opts['fun'], self.opts['arg'], self.opts)
  File "/usr/lib/python2.7/dist-packages/salt/runner.py", line 126, in cmd
    return self.functions[fun](*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/salt/runners/winrepo.py", line 46, in genrepo
    config = yaml.safe_load(slsfile.read()) or {}
  File "/usr/lib/python2.7/dist-packages/yaml/__init__.py", line 93, in safe_load
    return load(stream, SafeLoader)
  File "/usr/lib/python2.7/dist-packages/yaml/__init__.py", line 71, in load
    return loader.get_single_data()
  File "/usr/lib/python2.7/dist-packages/yaml/constructor.py", line 37, in get_single_data
    node = self.get_single_node()
  File "/usr/lib/python2.7/dist-packages/yaml/composer.py", line 35, in get_single_node
    if not self.check_event(StreamEndEvent):
  File "/usr/lib/python2.7/dist-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/usr/lib/python2.7/dist-packages/yaml/parser.py", line 143, in parse_implicit_document
_start
    StreamEndToken):
  File "/usr/lib/python2.7/dist-packages/yaml/scanner.py", line 116, in check_token
    self.fetch_more_tokens()
  File "/usr/lib/python2.7/dist-packages/yaml/scanner.py", line 257, in fetch_more_tokens
    % ch.encode('utf-8'), self.get_mark())
ScannerError: while scanning for the next token
found character '%' that cannot start any token
  in "<string>", line 1, column 2:
    {% if grains['osarch'] == "64-bit" %}
     ^
Traceback (most recent call last):
  File "/usr/bin/salt-run", line 10, in <module>
    salt_run()
  File "/usr/lib/python2.7/dist-packages/salt/scripts.py", line 95, in salt_run
    client.run()
  File "/usr/lib/python2.7/dist-packages/salt/cli/__init__.py", line 357, in run
    runner.run()
  File "/usr/lib/python2.7/dist-packages/salt/runner.py", line 219, in run
    self.opts['fun'], self.opts['arg'], self.opts)
  File "/usr/lib/python2.7/dist-packages/salt/runner.py", line 126, in cmd
    return self.functions[fun](*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/salt/runners/winrepo.py", line 46, in genrepo
    config = yaml.safe_load(slsfile.read()) or {}
  File "/usr/lib/python2.7/dist-packages/yaml/__init__.py", line 93, in safe_load
    return load(stream, SafeLoader)
  File "/usr/lib/python2.7/dist-packages/yaml/__init__.py", line 71, in load
    return loader.get_single_data()
  File "/usr/lib/python2.7/dist-packages/yaml/constructor.py", line 37, in get_single_data
    node = self.get_single_node()
  File "/usr/lib/python2.7/dist-packages/yaml/composer.py", line 35, in get_single_node
    if not self.check_event(StreamEndEvent):
  File "/usr/lib/python2.7/dist-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/usr/lib/python2.7/dist-packages/yaml/parser.py", line 143, in parse_implicit_document
_start
    StreamEndToken):
  File "/usr/lib/python2.7/dist-packages/yaml/scanner.py", line 116, in check_token
    self.fetch_more_tokens()
  File "/usr/lib/python2.7/dist-packages/yaml/scanner.py", line 257, in fetch_more_tokens
    % ch.encode('utf-8'), self.get_mark())
yaml.scanner.ScannerError: while scanning for the next token
found character '%' that cannot start any token
  in "<string>", line 1, column 2:
    {% if grains['osarch'] == "64-bit" %}
     ^