Get Hy working on Windows by making readline use conditional.

AUTHORS

@@ -14,4 +14,4 @@
 * Thomas Ballinger <thomasballinger@gmail.com>
 * Morten Linderud <mcfoxax@gmail.com>
 * Guillermo Vayá <guivaya@gmail.com>
-
+* Ralph Möritz <ralph.moeritz@outlook.com>

hy/cmdline.py

@@ -28,7 +28,6 @@ import ast
 import code
 import optparse
 import os
-import readline
 import sys
 
 import hy
@@ -40,13 +39,13 @@ from hy.core import process
 from hy.importer import ast_compile, import_buffer_to_module
 
 import hy.completer
+from hy.readline_helpers import read_history_file, write_history_file
 
 from hy.macros import macro, require
 from hy.models.expression import HyExpression
 from hy.models.string import HyString
 from hy.models.symbol import HySymbol
 
-
 _machine = Machine(Idle, 1, 0)
 
 try:
@@ -185,15 +184,7 @@ def run_repl(hr=None):
     sys.ps1 = "=> "
     sys.ps2 = "... "
 
-    history = os.path.expanduser("~/.hy-history")
-    readline.parse_and_bind("set blink-matching-paren on")
-
-    try:
-        readline.read_history_file(history)
-    except IOError:
-        open(history, 'a').close()
-
-    readline.parse_and_bind("tab: complete")
+    history = read_history_file()
 
     if not hr:
         hr = HyREPL()
@@ -201,7 +192,9 @@ def run_repl(hr=None):
         appname=hy.__appname__,
         version=hy.__version__
     ))
-    readline.write_history_file(history)
+
+    write_history_file(history)
+
     return 0
 
 

hy/completer.py

@@ -20,6 +20,7 @@
 
 import hy.macros
 import hy.compiler
+from hy.readline_helpers import set_completer
 
 try:
     import __builtin__
@@ -57,11 +58,5 @@ class Completer(object):
         except IndexError:
             return None
 
+set_completer(Completer().complete, "()[]{} ")
 
-try:
-    import readline
-except ImportError:
-    pass
-else:
-    readline.set_completer(Completer().complete)
-    readline.set_completer_delims("()[]{} ")

hy/readline_helpers.py

@@ -0,0 +1,65 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013 Paul Tagliamonte <paultag@debian.org>
+# Copyright (c) 2013 Gergely Nagy <algernon@madhouse-project.org>
+# Copyright (c) 2013 James King <james@agentultra.com>
+# Copyright (c) 2013 Julien Danjou <julien@danjou.info>
+# Copyright (c) 2013 Konrad Hinsen <konrad.hinsen@fastmail.net>
+# Copyright (c) 2013 Thom Neale <twneale@gmail.com>
+# Copyright (c) 2013 Will Kahn-Greene <willg@bluesock.org>
+# Copyright (c) 2013 Ralph Möritz <ralph.moeritz@outlook.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+import os
+
+noop = False
+
+try:
+    import readline
+except ImportError:
+    try:
+        import pyreadline.rlmain
+        import pyreadline.unicode_helper
+        import readline
+    except ImportError:
+        noop = True
+
+def set_completer(completer, delims):
+    if not noop:
+        readline.set_completer(completer)
+        readline.set_completer_delims(delims)
+
+def read_history_file():
+    if noop:
+        return None
+
+    history = os.path.expanduser("~/.hy-history")
+    readline.parse_and_bind("set blink-matching-paren on")
+
+    try:
+        readline.read_history_file(history)
+    except IOError:
+        open(history, 'a').close()
+
+    readline.parse_and_bind("tab: complete")
+    return history
+
+def write_history_file(history):
+    if not noop:
+        readline.write_history_file(history)

setup.py

@@ -22,16 +22,20 @@
 
 from hy import __appname__, __version__
 from setuptools import setup
-
+import os
 
 long_description = """Hy is a Python <--> Lisp layer. It helps
 make things work nicer, and lets Python and the Hy lisp variant play
 nice together. """
 
+install_requires = []
+if os.name == 'nt':
+    install_requires.append('pyreadline==2.0')
 
 setup(
     name=__appname__,
     version=__version__,
+    install_requires=install_requires,
     scripts=[
         "bin/hy",
         "bin/hyc",