fix python 2 regression

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>

HISTORY.txt

@@ -1,3 +1,5 @@
+6.0.2:
+ - Fix Python 2 regression.
 6.0.1:
  - Minor (major) bug fix.
 6.0.0:

pipenv/__version__.py

@@ -3,4 +3,4 @@
 #  //___/ / / / //___/ / //       //   / /  || / /
 # //       / / //       ((____   //   / /   ||/ /
 
-__version__ = '6.0.1'
+__version__ = '6.0.2'

pipenv/utils.py

@@ -58,8 +58,6 @@ def resolve_deps(deps, sources=None, verbose=False, hashes=False):
         name = pep423_name(result.name)
         version = six.u(str(result.specifier)).replace('==', '')
 
-        from json.decoder import JSONDecodeError
-
         if hashes:
             try:
                 collected_hashes = []
@@ -70,7 +68,7 @@ def resolve_deps(deps, sources=None, verbose=False, hashes=False):
                 collected_hashes = ['sha256:' + s for s in collected_hashes]
 
                 results.append({'name': name, 'version': version, 'hashes': collected_hashes})
-            except JSONDecodeError:
+            except ValueError:
                 results.append({'name': name, 'version': version})
         else:
             results.append({'name': name, 'version': version})