Fixed: spaces in version constriants (e.g. ``< 2``) weren't handled

       correctly.

CHANGES.rst

@@ -18,6 +18,9 @@ Fixed: initialization code wasn't included in interpeter scripts.
 
 Fixed: macro inheritance bug, https://github.com/buildout/buildout/pull/37
 
+Fixed: spaces in version constriants (e.g. ``< 2``) weren't handled
+       correctly.
+
 2.0.0a7 (2013-01-12)
 ====================
 

src/zc/buildout/easy_install.py

@@ -1299,7 +1299,7 @@ def bad_constraint(constraint, requirement):
                  "requirement, %r.", constraint, str(requirement))
     raise IncompatibleConstraintError("Bad constraint", constraint, requirement)
 
-_parse_constraint = re.compile(r'([<>]=?)(\S+)').match
+_parse_constraint = re.compile(r'([<>]=?)\s*(\S+)').match
 _comparef = {
     '>' : lambda x, y: x >  y,
     '>=': lambda x, y: x >= y,

src/zc/buildout/tests.py

@@ -2666,6 +2666,7 @@ def test_constrained_requirement():
     ... ('x>1',      '2',        'x==2'),
     ... ('x>3',      '2',        IncompatibleConstraintError),
     ... ('x>1',      '>2',       'x>2'),
+    ... ('x>1',      '> 2',      'x>2'),
     ... ('x>1',      '>=2',      'x>=2'),
     ... ('x<1',      '>2',       IncompatibleConstraintError),
     ... ('x<=1',     '>=1',      'x>=1,<1,==1'),
@@ -2677,7 +2678,9 @@ def test_constrained_requirement():
     ... ('x<3',      '2',        'x==2'),
     ... ('x<1',      '2',        IncompatibleConstraintError),
     ... ('x<3',      '<2',       'x<2'),
+    ... ('x<3',      '< 2',      'x<2'),
     ... ('x<3',      '<=2',      'x<=2'),
+    ... ('x<3',      '<= 2',     'x<=2'),
     ... ('x>3',      '<2',       IncompatibleConstraintError),
     ... ('x>=1',     '<=1',      'x<=1,>1,==1'),
     ... ('x<3',      '>1',       'x>1,<3'),