Feature/performance update

news/3158.feature.rst

@@ -0,0 +1 @@
+Improved runtime performance of no-op commands such as ``pipenv --venv`` by around 2/3.

pipenv/exceptions.py

@@ -84,7 +84,7 @@ def __init__(self, message=None, ctx=None, **kwargs):
         message = formatted_message.format(msg_prefix, crayons.white(message, bold=True))
         self.message = message
         extra = kwargs.pop("extra", [])
-        UsageError.__init__(self, message, ctx)
+        UsageError.__init__(self, fix_utf8(message), ctx)
         self.extra = extra
 
     def show(self, file=None):
@@ -98,8 +98,8 @@ def show(self, file=None):
                 self.extra = [self.extra,]
             for extra in self.extra:
                 if color:
-                    extra = getattr(crayons, color, "normal")
-                click_echo(extra, file=file)
+                    extra = getattr(crayons, color, "blue")(extra)
+                click_echo(fix_utf8(extra), file=file)
         hint = ''
         if (self.cmd is not None and
                 self.cmd.get_help_option(self.ctx) is not None):
@@ -123,7 +123,7 @@ def __init__(self, filename, message=None, **kwargs):
             crayons.white("{0} not found!".format(filename), bold=True),
             message
         )
-        FileError.__init__(self, filename=filename, hint=message, **kwargs)
+        FileError.__init__(self, filename=filename, hint=fix_utf8(message), **kwargs)
         self.extra = extra
 
     def show(self, file=None):
@@ -133,20 +133,20 @@ def show(self, file=None):
             if isinstance(self.extra, six.string_types):
                 self.extra = [self.extra,]
             for extra in self.extra:
-                click_echo(extra, file=file)
+                click_echo(fix_utf8(extra), file=file)
         click_echo(self.message, file=file)
 
 
 class PipfileNotFound(PipenvFileError):
     def __init__(self, filename="Pipfile", extra=None, **kwargs):
         extra = kwargs.pop("extra", [])
-        message = ("{0}. {1}".format(
+        message = ("{0} {1}".format(
                 crayons.red("Aborting!", bold=True),
                 crayons.white("Please ensure that the file exists and is located in your"
                                 " project root directory.", bold=True)
             )
         )
-        super(PipfileNotFound, self).__init__(filename, message=message, extra=extra, **kwargs)
+        super(PipfileNotFound, self).__init__(filename, message=fix_utf8(message), extra=extra, **kwargs)
 
 
 class LockfileNotFound(PipenvFileError):
@@ -157,21 +157,21 @@ def __init__(self, filename="Pipfile.lock", extra=None, **kwargs):
             crayons.red("$ pipenv lock", bold=True),
             crayons.white("before you can continue.", bold=True)
         )
-        super(LockfileNotFound, self).__init__(filename, message=message, extra=extra, **kwargs)
+        super(LockfileNotFound, self).__init__(filename, message=fix_utf8(message), extra=extra, **kwargs)
 
 
 class DeployException(PipenvUsageError):
     def __init__(self, message=None, **kwargs):
         if not message:
             message = crayons.normal("Aborting deploy", bold=True)
         extra = kwargs.pop("extra", [])
-        PipenvUsageError.__init__(message=message, extra=extra, **kwargs)
+        PipenvUsageError.__init__(message=fix_utf8(message), extra=extra, **kwargs)
 
 
 class PipenvOptionsError(PipenvUsageError):
     def __init__(self, option_name, message=None, ctx=None, **kwargs):
         extra = kwargs.pop("extra", [])
-        PipenvUsageError.__init__(self, message=message, ctx=ctx, **kwargs)
+        PipenvUsageError.__init__(self, message=fix_utf8(message), ctx=ctx, **kwargs)
         self.extra = extra
         self.option_name = option_name
 
@@ -184,7 +184,7 @@ def __init__(self, hint=None, **kwargs):
             hint = "{0} {1}".format(crayons.red("ERROR (PACKAGE NOT INSTALLED):"), hint)
         filename = project.pipfile_location
         extra = kwargs.pop("extra", [])
-        PipenvFileError.__init__(self, filename, hint, extra=extra, **kwargs)
+        PipenvFileError.__init__(self, filename, fix_utf8(hint), extra=extra, **kwargs)
 
 
 class SetupException(PipenvException):
@@ -200,7 +200,7 @@ def __init__(self, message=None, **kwargs):
                 "There was an unexpected error while activating your virtualenv. "
                 "Continuing anyway..."
             )
-        PipenvException.__init__(self, message, **kwargs)
+        PipenvException.__init__(self, fix_utf8(message), **kwargs)
 
 
 class VirtualenvActivationException(VirtualenvException):
@@ -211,15 +211,15 @@ def __init__(self, message=None, **kwargs):
                 "not activated. Continuing anyway…"
             )
         self.message = message
-        VirtualenvException.__init__(self, message, **kwargs)
+        VirtualenvException.__init__(self, fix_utf8(message), **kwargs)
 
 
 class VirtualenvCreationException(VirtualenvException):
     def __init__(self, message=None, **kwargs):
         if not message:
             message = "Failed to create virtual environment."
         self.message = message
-        VirtualenvException.__init__(self, message, **kwargs)
+        VirtualenvException.__init__(self, fix_utf8(message), **kwargs)
 
 
 class UninstallError(PipenvException):
@@ -235,5 +235,49 @@ def __init__(self, package, command, return_values, return_code, **kwargs):
             crayons.yellow(package, bold=True)
         )
         self.exit_code = return_code
-        PipenvException.__init__(self, message=message, extra=extra)
+        PipenvException.__init__(self, message=fix_utf8(message), extra=extra)
         self.extra = extra
+
+
+class CacheError(PipenvException):
+    def __init__(self, path, **kwargs):
+        message = "{0} {1} {2}\n{0}".format(
+            crayons.red("ERROR:", bold=True),
+            crayons.blue("Corrupt cache file"),
+            crayons.white(path),
+            crayons.white('Consider trying "pipenv lock --clear" to clear the cache.')
+        )
+        super(PipenvException, self).__init__(message=fix_utf8(message))
+
+
+class ResolutionFailure(PipenvException):
+    def __init__(self, message, no_version_found=False):
+        extra = (
+            "{0}: Your dependencies could not be resolved. You likely have a "
+            "mismatch in your sub-dependencies.\n  "
+            "First try clearing your dependency cache with {1}, then try the original command again.\n "
+            "Alternatively, you can use {2} to bypass this mechanism, then run "
+            "{3} to inspect the situation.\n  "
+            "Hint: try {4} if it is a pre-release dependency."
+            "".format(
+                crayons.red("Warning", bold=True),
+                crayons.red("$ pipenv lock --clear"),
+                crayons.red("$ pipenv install --skip-lock"),
+                crayons.red("$ pipenv graph"),
+                crayons.red("$ pipenv lock --pre"),
+            ),
+        )
+        if "no version found at all" in message:
+            no_version_found = True
+        message = "{0} {1}".format(
+            crayons.red("ERROR:", bold=True), crayons.yellow(message)
+        )
+        if no_version_found:
+            messsage = "{0}\n{1}".format(
+                message,
+                crayons.blue(
+                    "Please check your version specifier and version number. "
+                    "See PEP440 for more information."
+                )
+            )
+        super(ResolutionFailure, self).__init__(fix_utf8(message), extra=extra)

pipenv/project.py

@@ -6,7 +6,6 @@
 import sys
 import glob
 import base64
-import itertools
 import fnmatch
 import hashlib
 import contoml
@@ -47,7 +46,6 @@
     PIPENV_DEFAULT_PYTHON_VERSION,
     PIPENV_CACHE_DIR
 )
-from requirementslib.utils import is_vcs
 
 
 def _normalized(p):
@@ -173,6 +171,7 @@ def path_to(self, p):
 
     def _build_package_list(self, package_section):
         """Returns a list of packages for pip-tools to consume."""
+        from pipenv.vendor.requirementslib.utils import is_vcs
         ps = {}
         # TODO: Separate the logic for showing packages from the filters for supplying pip-tools
         for k, v in self.parsed_pipfile.get(package_section, {}).items():
@@ -677,6 +676,7 @@ def _get_editable_packages(self, dev=False):
         return packages
 
     def _get_vcs_packages(self, dev=False):
+        from pipenv.vendor.requirementslib.utils import is_vcs
         section = "dev-packages" if dev else "packages"
         # section = "{0}-vcs".format(section)
         packages = {