Clarify message about inconsistent lock file

As discussed in python-poetry#8737 (comment)

src/poetry/console/commands/check.py

@@ -147,7 +147,7 @@ def handle(self) -> int:
  check_result["errors"] += ["poetry.lock was not found."]
  if self.poetry.locker.is_locked() and not self.poetry.locker.is_fresh():
  check_result["errors"] += [
- "poetry.lock is not consistent with pyproject.toml. Run `poetry"
+ "pyproject.toml changes significantly since poetry.lock was generated. Run `poetry"
  " lock [--no-update]` to fix it."
  ]
 

src/poetry/console/commands/lock.py

@@ -44,7 +44,7 @@ def handle(self) -> int:
  return 0
  self.line_error(
  "<error>"
- "Error: poetry.lock is not consistent with pyproject.toml. "
+ "Error: pyproject.toml changes significantly since poetry.lock was generated. "
  "Run `poetry lock [--no-update]` to fix it."
  "</error>"
  )

src/poetry/installation/installer.py

@@ -246,7 +246,7 @@ def _do_install(self) -> int:
 
  if not self._locker.is_fresh():
  raise ValueError(
- "poetry.lock is not consistent with pyproject.toml. "
+ "pyproject.toml changes significantly since poetry.lock was generated. "
  "Run `poetry lock [--no-update]` to fix it."
  )
 

tests/console/commands/test_check.py

@@ -171,7 +171,7 @@ def test_check_lock_outdated(
  tester = command_tester_factory("check", poetry=poetry_with_outdated_lockfile)
  status_code = tester.execute(options)
  expected = (
- "Error: poetry.lock is not consistent with pyproject.toml. "
+ "Error: pyproject.toml changes significantly since poetry.lock was generated. "
  "Run `poetry lock [--no-update]` to fix it.\n"
  )
 

tests/console/commands/test_lock.py

@@ -106,7 +106,7 @@ def test_lock_check_outdated_legacy(
  status_code = tester.execute("--check")
  expected = (
  "poetry lock --check is deprecated, use `poetry check --lock` instead.\n"
- "Error: poetry.lock is not consistent with pyproject.toml. "
+ "Error: pyproject.toml changes significantly since poetry.lock was generated. "
  "Run `poetry lock [--no-update]` to fix it.\n"
  )
 

tests/installation/test_installer.py

@@ -220,7 +220,7 @@ def test_not_fresh_lock(installer: Installer, locker: Locker) -> None:
  with pytest.raises(
  ValueError,
  match=re.escape(
- "poetry.lock is not consistent with pyproject.toml. "
+ "pyproject.toml changes significantly since poetry.lock was generated. "
  "Run `poetry lock [--no-update]` to fix it."
  ),
  ):