Improve dependency source_url equality check to use normalised urls instead of given/derrived values

ptry-project ─╼ poetry@local update -vvv                                                                             0
Using virtualenv: /Users/martynas/Library/Caches/pypoetry/virtualenvs/ptry-project-3Lsr60E6-py3.8
Updating dependencies
Resolving dependencies...
   1: fact: ptry-project is 0.1.0
   1: derived: ptry-project
   1: fact: ptry-project depends on ptry-helper (0.1.0 git rev 047f569)
   1: fact: ptry-project depends on ptry-lib (0.1.0 git rev 3665750)
   1: fact: ptry-project depends on pytest (^5.2)
   1: fact: ptry-project depends on pytest (^5.2)
   1: selecting ptry-project (0.1.0)
   1: derived: pytest (^5.2)
   1: derived: ptry-lib (0.1.0 git rev 3665750)
   1: derived: ptry-helper (0.1.0 git rev 047f569)
PyPI: 15 packages found for pytest >=5.2,<6.0
   1: fact: ptry-lib (0.1.0 git rev 3665750) depends on ptry-helper (0.1.0 git rev 047f569)
   1: conflict: ptry-lib (0.1.0 git rev 3665750) depends on ptry-helper (0.1.0 git rev 047f569)
   1: ! not ptry-helper (0.1.0 git rev 047f569) is satisfied by ptry-helper (0.1.0 git rev 047f569)
   1: ! which is caused by "ptry-project depends on ptry-helper (0.1.0 git rev 047f569)"
   1: ! thus: ptry-lib is forbidden
   1: ! ptry-lib (0.1.0 git rev 3665750) is satisfied by ptry-lib (0.1.0 git rev 3665750)
   1: ! which is caused by "ptry-project depends on ptry-lib (0.1.0 git rev 3665750)"
   1: ! thus: version solving failed
   1: Version solving took 23.160 seconds.
   1: Tried 1 solutions.
Stack trace:
8  ~/Library/Caches/pypoetry/virtualenvs/poetry-RboxO2pV-py3.8/lib/python3.8/site-packages/clikit/console_application.py:131 in run

129│             parsed_args = resolved_command.args

130│

→ 131│             status_code = command.handle(parsed_args, io)

132│         except KeyboardInterrupt:

133│             status_code = 1
7  ~/Library/Caches/pypoetry/virtualenvs/poetry-RboxO2pV-py3.8/lib/python3.8/site-packages/clikit/api/command/command.py:120 in handle

118│     def handle(self, args, io):  # type: (Args, IO) -> int

119│         try:

→ 120│             status_code = self._do_handle(args, io)

121│         except KeyboardInterrupt:

122│             if io.is_debug():
6  ~/Library/Caches/pypoetry/virtualenvs/poetry-RboxO2pV-py3.8/lib/python3.8/site-packages/clikit/api/command/command.py:171 in _do_handle

169│         handler_method = self._config.handler_method

170│

→ 171│         return getattr(handler, handler_method)(args, io, self)

172│

173│     def repr(self):  # type: () -> str
5  ~/Library/Caches/pypoetry/virtualenvs/poetry-RboxO2pV-py3.8/lib/python3.8/site-packages/cleo/commands/command.py:92 in wrap_handle

90│         self._command = command

91│

→  92│         return self.handle()

93│

94│     def handle(self):  # type: () -> Optional[int]
4  ~/projects/poetry/poetry/console/commands/update.py:47 in handle

45│         self._installer.update(True)

46│

→ 47│         return self._installer.run()

48│
3  ~/projects/poetry/poetry/installation/installer.py:103 in run

101│         local_repo = Repository()

102│

→ 103│         return self._do_install(local_repo)

104│

105│     def dry_run(self, dry_run=True):  # type: (bool) -> Installer
2  ~/projects/poetry/poetry/installation/installer.py:235 in _do_install

233│             )

234│

→ 235│             ops = solver.solve(use_latest=self._whitelist)

236│         else:

237│             self._io.write_line("Installing dependencies from lock file")
1  ~/projects/poetry/poetry/puzzle/solver.py:65 in solve

63│         with self._provider.progress():

64│             start = time.time()

→  65│             packages, depths = self._solve(use_latest=use_latest)

66│             end = time.time()

67│
SolverProblemError
Because ptry-lib (0.1.0 git rev 3665750) depends on ptry-helper (0.1.0 git rev 047f569)

and ptry-project depends on ptry-helper (0.1.0 git rev 047f569), ptry-lib is forbidden.

So, because ptry-project depends on ptry-lib (0.1.0 git rev 3665750), version solving failed.
at ~/projects/poetry/poetry/puzzle/solver.py:241 in _solve

237│             packages = result.packages

238│         except OverrideNeeded as e:

239│             return self.solve_in_compatibility_mode(e.overrides, use_latest=use_latest)

240│         except SolveFailure as e:

→ 241│             raise SolverProblemError(e)

242│

243│         results = dict(

244│             depth_first_search(

245│                 PackageNode(self._package, packages), aggregate_package_nodes