Fix virtualenv creation and error logging

Signed-off-by: Dan Ryan <dan@danryan.co>

pipenv/_compat.py

@@ -11,6 +11,7 @@
 import six
 import sys
 import warnings
+import vistir
 from tempfile import _bin_openflags, gettempdir, _mkstemp_inner, mkdtemp
 from .utils import logging, rmtree
 
@@ -367,12 +368,22 @@ def force_encoding():
 OUT_ENCODING, ERR_ENCODING = force_encoding()
 
 
+UNICODE_TO_ASCII_TRANSLATION_MAP = {
+    8230: u"...",
+    8211: u"-"
+}
+
+
 def decode_output(output):
     if not isinstance(output, six.string_types):
         return output
     try:
         output = output.encode(DEFAULT_ENCODING)
-    except AttributeError:
-        pass
+    except (AttributeError, UnicodeDecodeError):
+        if six.PY2:
+            output = unicode.translate(vistir.misc.to_text(output),
+                                            UNICODE_TO_ASCII_TRANSLATION_MAP)
+        else:
+            output = output.translate(UNICODE_TO_ASCII_TRANSLATION_MAP)
     output = output.decode(DEFAULT_ENCODING)
     return output

pipenv/project.py

@@ -15,6 +15,7 @@
 import pipfile.api
 import six
 import vistir
+import virtualenv as _virtualenv
 import toml
 
 from .cmdparse import Script
@@ -985,25 +986,17 @@ def _pyversion(self):
 
     @property
     def env_paths(self):
-        import sysconfig
         location = self.virtualenv_location if self.virtualenv_location else sys.prefix
-        prefix = vistir.compat.Path(location).as_posix()
-        scheme = sysconfig._get_default_scheme()
-        if not scheme:
-            scheme = "posix_prefix" if not sys.platform == "win32" else "nt"
-        config = {
-            "base": prefix,
-            "installed_base": prefix,
-            "platbase": prefix,
-            "installed_platbase": prefix
-        }
-        config.update(self._pyversion)
+        prefix = vistir.compat.Path(location)
+        home, lib, inc, bin_ = _virtualenv.path_locations(prefix)
         paths = {
-            k: v.format(**config)
-            for k, v in sysconfig._INSTALL_SCHEMES[scheme].items()
+            "lib": lib,
+            "include": inc,
+            "scripts": bin_,
+            "purelib": lib,
+            "prefix": home,
+            "base": home
         }
-        if "prefix" not in paths:
-            paths["prefix"] = prefix
         return paths
 
     @cached_property

pipenv/utils.py

@@ -331,7 +331,7 @@ def venv_resolve_deps(
     pypi_mirror=None,
 ):
     from .vendor.vistir.misc import fs_str
-    from .vendor.vistir.compat import Path, to_native_string
+    from .vendor.vistir.compat import Path, to_native_string, JSONDecodeError
     from .vendor.vistir.path import create_tracked_tempdir
     from .cmdparse import Script
     from .core import spinner
@@ -370,7 +370,7 @@ def venv_resolve_deps(
         with spinner(text=fs_str("Locking..."), spinner_name=environments.PIPENV_SPINNER,
                 nospin=environments.PIPENV_NOSPIN) as sp:
             c = delegator.run(Script.parse(cmd).cmdify(), block=False, env=os.environ.copy())
-            _out = to_native_string("")
+            _out = decode_output("")
             result = None
             while True:
                 try:
@@ -404,7 +404,7 @@ def venv_resolve_deps(
     try:
         return json.loads(c.out.split("RESULTS:")[1].strip())
 
-    except IndexError:
+    except (IndexError, JSONDecodeError):
         click_echo(c.out.strip(), err=True)
         click_echo(c.err.strip(), err=True)
         raise RuntimeError("There was a problem with locking.")
@@ -1305,3 +1305,43 @@ def parse_indexes(line):
     indexes = index + extra_indexes
     trusted_hosts = args.trusted_host if args.trusted_host else []
     return indexes, trusted_hosts, remainder
+
+
+def fix_venv_site(venv_lib_dir):
+    # From https://github.com/pypa/pip/blob/master/tests/lib/venv.py#L84
+    # Prevent accidental inclusions of site packages during virtualenv operations
+    from .vendor.vistir.compat import Path
+    import compileall
+    site_py = Path(venv_lib_dir).joinpath('site.py').as_posix()
+    with open(site_py) as fp:
+        site_contents = fp.read()
+    for pattern, replace in (
+        (
+            # Ensure enabling user site does not result in adding
+            # the real site-packages' directory to `sys.path`.
+            (
+                '\ndef virtual_addsitepackages(known_paths):\n'
+            ),
+            (
+                '\ndef virtual_addsitepackages(known_paths):\n'
+                '    return known_paths\n'
+            ),
+        ),
+        (
+            # Fix sites ordering: user site must be added before system.
+            (
+                '\n    paths_in_sys = addsitepackages(paths_in_sys)'
+                '\n    paths_in_sys = addusersitepackages(paths_in_sys)\n'
+            ),
+            (
+                '\n    paths_in_sys = addusersitepackages(paths_in_sys)'
+                '\n    paths_in_sys = addsitepackages(paths_in_sys)\n'
+            ),
+        ),
+    ):
+        if pattern in site_contents and replace not in site_contents:
+            site_contents = site_contents.replace(pattern, replace)
+    with open(site_py, 'w') as fp:
+        fp.write(site_contents)
+    # Make sure bytecode is up-to-date too.
+    assert compileall.compile_file(str(site_py), quiet=1, force=True)

tasks/vendoring/__init__.py

@@ -52,6 +52,7 @@
     'distlib': 'https://github.com/vsajip/distlib/raw/master/LICENSE.txt',
     'pythonfinder': 'https://raw.githubusercontent.com/techalchemy/pythonfinder/master/LICENSE.txt',
     'pyparsing': 'https://raw.githubusercontent.com/pyparsing/pyparsing/master/LICENSE',
+    'resolvelib': 'https://raw.githubusercontent.com/sarugaku/resolvelib/master/LICENSE'
 }
 
 FILE_WHITE_LIST = (