Fix editor auto-deletions of piptools patch lines

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

tasks/vendoring/patches/patched/piptools.patch

@@ -19,7 +19,7 @@ index 4e6174c..75f9b49 100644
  # NOTE
  # We used to store the cache dir under ~/.pip-tools, which is not the
 diff --git a/pipenv/patched/piptools/repositories/pypi.py b/pipenv/patched/piptools/repositories/pypi.py
-index 1c4b943..10447b6 100644
+index 1c4b943..84077f0 100644
 --- a/pipenv/patched/piptools/repositories/pypi.py
 +++ b/pipenv/patched/piptools/repositories/pypi.py
 @@ -1,9 +1,10 @@
@@ -33,7 +33,7 @@ index 1c4b943..10447b6 100644
 +import sys
  from contextlib import contextmanager
  from shutil import rmtree
-
+ 
 @@ -15,13 +16,22 @@ from .._compat import (
      Wheel,
      FAVORITE_HASH,
@@ -43,7 +43,7 @@ index 1c4b943..10447b6 100644
 +    InstallRequirement,
 +    SafeFileCache,
  )
-
+ 
 -from ..cache import CACHE_DIR
 +from pip._vendor.packaging.requirements import Requirement
 +from pip._vendor.packaging.specifiers import SpecifierSet, Specifier
@@ -58,12 +58,12 @@ index 1c4b943..10447b6 100644
 +                     make_install_requirement, clean_requires_python)
 +
  from .base import BaseRepository
-
-
+ 
+ 
 @@ -37,6 +47,45 @@ except ImportError:
      from pip.wheel import WheelCache
-
-
+ 
+ 
 +class HashCache(SafeFileCache):
 +    """Caches hashes of PyPI artifacts so we do not need to re-download them
 +
@@ -105,7 +105,7 @@ index 1c4b943..10447b6 100644
 +
  class PyPIRepository(BaseRepository):
      DEFAULT_INDEX_URL = PyPI.simple_url
-
+ 
 @@ -46,10 +95,11 @@ class PyPIRepository(BaseRepository):
      config), but any other PyPI mirror can be used if index_urls is
      changed/configured on the Finder.
@@ -117,7 +117,7 @@ index 1c4b943..10447b6 100644
          self.pip_options = pip_options
 -        self.wheel_cache = WheelCache(CACHE_DIR, pip_options.format_control)
 +        self.wheel_cache = WheelCache(PIPENV_CACHE_DIR, pip_options.format_control)
-
+ 
          index_urls = [pip_options.index_url] + pip_options.extra_index_urls
          if pip_options.no_index:
 @@ -74,11 +124,15 @@ class PyPIRepository(BaseRepository):
@@ -128,20 +128,20 @@ index 1c4b943..10447b6 100644
 +
 +        # stores *full* path + fragment => sha256
 +        self._hash_cache = HashCache(session=session)
-
+ 
          # Setup file paths
          self.freshen_build_caches()
 -        self._download_dir = fs_str(os.path.join(CACHE_DIR, 'pkgs'))
 -        self._wheel_download_dir = fs_str(os.path.join(CACHE_DIR, 'wheels'))
 +        self._download_dir = fs_str(os.path.join(PIPENV_CACHE_DIR, 'pkgs'))
 +        self._wheel_download_dir = fs_str(os.path.join(PIPENV_CACHE_DIR, 'wheels'))
-
+ 
      def freshen_build_caches(self):
          """
 @@ -114,10 +168,14 @@ class PyPIRepository(BaseRepository):
          if ireq.editable:
              return ireq  # return itself as the best match
-
+ 
 -        all_candidates = self.find_all_candidates(ireq.name)
 +        all_candidates = clean_requires_python(self.find_all_candidates(ireq.name))
 +
@@ -152,12 +152,12 @@ index 1c4b943..10447b6 100644
                                                    prereleases=prereleases)
 +        except TypeError:
 +            matching_versions = [candidate.version for candidate in all_candidates]
-
+ 
          # Reuses pip's internal candidate sort key to sort
          matching_candidates = [candidates_by_version[ver] for ver in matching_versions]
 @@ -126,11 +184,71 @@ class PyPIRepository(BaseRepository):
          best_candidate = max(matching_candidates, key=self.finder._candidate_sort_key)
-
+ 
          # Turn the candidate into a pinned InstallRequirement
 -        return make_install_requirement(
 -            best_candidate.project, best_candidate.version, ireq.extras, constraint=ireq.constraint
@@ -211,7 +211,7 @@ index 1c4b943..10447b6 100644
 +            return set(self._json_dep_cache[ireq])
 +        except Exception:
 +            return set()
-
+ 
      def get_dependencies(self, ireq):
 +        json_results = set()
 +
@@ -380,12 +380,12 @@ index 1c4b943..10447b6 100644
              reqset.cleanup_files()
 +
          return set(self._dependencies_cache[ireq])
-
+ 
      def get_hashes(self, ireq):
 @@ -210,6 +434,10 @@ class PyPIRepository(BaseRepository):
          if ireq.editable:
              return set()
-
+ 
 +        vcs = VcsSupport()
 +        if ireq.link and ireq.link.scheme in vcs.all_schemes and 'ssh' in ireq.link.scheme:
 +            return set()
@@ -412,13 +412,13 @@ index 1c4b943..10447b6 100644
 +        # matching_versions = list(
 +        #     ireq.specifier.filter((candidate.version for candidate in all_candidates)))
 +        # matching_candidates = candidates_by_version[matching_versions[0]]
-
+ 
          return {
 -            self._get_file_hash(candidate.location)
 +            self._hash_cache.get_hash(candidate.location)
              for candidate in matching_candidates
          }
-
+ 
 -    def _get_file_hash(self, location):
 -        h = hashlib.new(FAVORITE_HASH)
 -        with open_local_or_remote_file(location, self.session) as fp: