canonicalized extra names

src/poetry/console/commands/install.py

@@ -115,6 +115,7 @@ def handle(self) -> int:
             )
             return 1
 
+        extras: list[str]
         if self.option("all-extras"):
             extras = list(self.poetry.package.extras.keys())
         else:

src/poetry/installation/installer.py

@@ -63,7 +63,7 @@ def __init__(
 
         self._whitelist: list[NormalizedName] = []
 
-        self._extras: list[str] = []
+        self._extras: list[NormalizedName] = []
 
         if executor is None:
             executor = Executor(
@@ -175,7 +175,7 @@ def whitelist(self, packages: Iterable[str]) -> Installer:
         return self
 
     def extras(self, extras: list[str]) -> Installer:
-        self._extras = extras
+        self._extras = [canonicalize_name(extra) for extra in extras]
 
         return self
 
@@ -259,8 +259,12 @@ def _do_install(self) -> int:
                     "</warning>"
                 )
 
+            locker_extras = {
+                canonicalize_name(extra)
+                for extra in self._locker.lock_data.get("extras", {})
+            }
             for extra in self._extras:
-                if extra not in self._locker.lock_data.get("extras", {}):
+                if extra not in locker_extras:
                     raise ValueError(f"Extra [{extra}] is not specified.")
 
             # If we are installing from lock
@@ -538,11 +542,17 @@ def _get_extra_packages(self, repo: Repository) -> set[NormalizedName]:
 
         Maybe we just let the solver handle it?
         """
-        extras: dict[str, list[str]]
+        extras: dict[NormalizedName, list[NormalizedName]]
         if self._update:
             extras = {k: [d.name for d in v] for k, v in self._package.extras.items()}
         else:
-            extras = self._locker.lock_data.get("extras", {})
+            raw_extras = self._locker.lock_data.get("extras", {})
+            extras = {
+                canonicalize_name(extra): [
+                    canonicalize_name(dependency) for dependency in dependencies
+                ]
+                for extra, dependencies in raw_extras.items()
+            }
 
         return get_extra_package_names(repo.packages, extras, self._extras)
 

src/poetry/packages/locker.py

@@ -11,6 +11,7 @@
 from typing import Any
 from typing import cast
 
+from packaging.utils import canonicalize_name
 from poetry.core.packages.dependency import Dependency
 from poetry.core.packages.package import Package
 from poetry.core.semver.helpers import parse_constraint
@@ -164,6 +165,7 @@ def locked_repository(self) -> LockfileRepository:
             extras = info.get("extras", {})
             if extras:
                 for name, deps in extras.items():
+                    name = canonicalize_name(name)
                     package.extras[name] = []
 
                     for dep in deps:

src/poetry/puzzle/provider.py

@@ -33,7 +33,6 @@
 from poetry.puzzle.exceptions import OverrideNeeded
 from poetry.repositories.exceptions import PackageNotFound
 from poetry.utils.helpers import download_file
-from poetry.utils.helpers import safe_extra
 from poetry.vcs.git import Git
 
 
@@ -580,7 +579,6 @@ def complete_package(
         # to the current package
         if dependency.extras:
             for extra in dependency.extras:
-                extra = safe_extra(extra)
                 if extra not in package.extras:
                     continue
 
@@ -615,9 +613,7 @@ def complete_package(
                 (dep.is_optional() and dep.name not in optional_dependencies)
                 or (
                     dep.in_extras
-                    and not set(dep.in_extras).intersection(
-                        {safe_extra(extra) for extra in dependency.extras}
-                    )
+                    and not set(dep.in_extras).intersection(dependency.extras)
                 )
             ):
                 continue

src/poetry/utils/extras.py

@@ -14,8 +14,8 @@
 
 def get_extra_package_names(
     packages: Iterable[Package],
-    extras: Mapping[str, list[str]],
-    extra_names: Collection[str],
+    extras: Mapping[NormalizedName, list[NormalizedName]],
+    extra_names: Collection[NormalizedName],
 ) -> set[NormalizedName]:
     """
     Returns all package names required by the given extras.

src/poetry/utils/helpers.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import os
-import re
 import shutil
 import stat
 import sys
@@ -171,18 +170,6 @@ def pluralize(count: int, word: str = "") -> str:
     return word + "s"
 
 
-def safe_extra(extra: str) -> str:
-    """Convert an arbitrary string to a standard 'extra' name.
-
-    Any runs of non-alphanumeric characters are replaced with a single '_',
-    and the result is always lowercased.
-
-    See
-    https://github.com/pypa/setuptools/blob/452e13c/pkg_resources/__init__.py#L1423-L1431.
-    """
-    return re.sub("[^A-Za-z0-9.-]+", "_", extra).lower()
-
-
 def _get_win_folder_from_registry(csidl_name: str) -> str:
     if sys.platform != "win32":
         raise RuntimeError("Method can only be called on Windows.")

tests/console/commands/test_install.py

@@ -166,10 +166,10 @@ def test_all_extras_populates_installer(tester: CommandTester, mocker: MockerFix
 
     tester.execute("--all-extras")
 
-    assert tester.command.installer._extras == ["extras_a", "extras_b"]
+    assert tester.command.installer._extras == ["extras-a", "extras-b"]
 
 
-def test_extras_conlicts_all_extras(tester: CommandTester, mocker: MockerFixture):
+def test_extras_conflicts_all_extras(tester: CommandTester, mocker: MockerFixture):
     """
     The --extras doesn't make sense with --all-extras.
     """

tests/installation/fixtures/with-dependencies-nested-extras.test

@@ -8,10 +8,10 @@ python-versions = "*"
 files = []
 
 [package.dependencies]
-B = {version = "^1.0", optional = true, extras = ["C"]}
+B = {version = "^1.0", optional = true, extras = ["c"]}
 
 [package.extras]
-b = ["B[C] (>=1.0,<2.0)"]
+b = ["B[c] (>=1.0,<2.0)"]
 
 [[package]]
 name = "B"

tests/installation/fixtures/with-directory-dependency-poetry-transitive.test

@@ -55,8 +55,8 @@ files = []
 version = "1.2.3"
 
 [package.extras]
-extras_a = ["pendulum (>=1.4.4)"]
-extras_b = ["cachy (>=0.2.0)"]
+extras-a = ["pendulum (>=1.4.4)"]
+extras-b = ["cachy (>=0.2.0)"]
 
 [package.source]
 type = "directory"

tests/installation/fixtures/with-directory-dependency-poetry.test

@@ -21,8 +21,8 @@ version = "1.2.3"
 pendulum = {version = ">=1.4.4", optional = true}
 
 [package.extras]
-extras_a = ["pendulum (>=1.4.4)"]
-extras_b = ["cachy (>=0.2.0)"]
+extras-a = ["pendulum (>=1.4.4)"]
+extras-b = ["cachy (>=0.2.0)"]
 
 [package.source]
 type = "directory"

tests/puzzle/test_provider.py

@@ -462,8 +462,8 @@ def test_search_for_directory_poetry(provider: Provider):
         get_dependency("pendulum", ">=1.4.4"),
     ]
     assert package.extras == {
-        "extras_a": [get_dependency("pendulum", ">=1.4.4")],
-        "extras_b": [get_dependency("cachy", ">=0.2.0")],
+        "extras-a": [get_dependency("pendulum", ">=1.4.4")],
+        "extras-b": [get_dependency("cachy", ">=0.2.0")],
     }
 
 
@@ -491,8 +491,8 @@ def test_search_for_directory_poetry_with_extras(provider: Provider):
         get_dependency("pendulum", ">=1.4.4"),
     ]
     assert package.extras == {
-        "extras_a": [get_dependency("pendulum", ">=1.4.4")],
-        "extras_b": [get_dependency("cachy", ">=0.2.0")],
+        "extras-a": [get_dependency("pendulum", ">=1.4.4")],
+        "extras-b": [get_dependency("cachy", ">=0.2.0")],
     }
 
 

tests/repositories/test_pypi_repository.py

@@ -238,14 +238,14 @@ def test_fallback_can_read_setup_to_get_dependencies() -> None:
     assert len([r for r in package.requires if r.is_optional()]) == 9
 
     assert package.extras == {
-        "mssql_pymssql": [Dependency("pymssql", "*")],
-        "mssql_pyodbc": [Dependency("pyodbc", "*")],
+        "mssql-pymssql": [Dependency("pymssql", "*")],
+        "mssql-pyodbc": [Dependency("pyodbc", "*")],
         "mysql": [Dependency("mysqlclient", "*")],
         "oracle": [Dependency("cx_oracle", "*")],
         "postgresql": [Dependency("psycopg2", "*")],
-        "postgresql_pg8000": [Dependency("pg8000", "*")],
-        "postgresql_psycopg2binary": [Dependency("psycopg2-binary", "*")],
-        "postgresql_psycopg2cffi": [Dependency("psycopg2cffi", "*")],
+        "postgresql-pg8000": [Dependency("pg8000", "*")],
+        "postgresql-psycopg2binary": [Dependency("psycopg2-binary", "*")],
+        "postgresql-psycopg2cffi": [Dependency("psycopg2cffi", "*")],
         "pymysql": [Dependency("pymysql", "*")],
     }
 
@@ -270,7 +270,7 @@ def test_pypi_repository_supports_reading_bz2_files() -> None:
     ]
 
     expected_extras = {
-        "all_non_platform": [
+        "all-non-platform": [
             Dependency("appdirs", ">=1.4.0"),
             Dependency("cryptography", ">=1.5"),
             Dependency("h2", ">=3.0,<4.0"),

tests/test_factory.py

@@ -6,6 +6,7 @@
 import pytest
 
 from deepdiff import DeepDiff
+from packaging.utils import canonicalize_name
 from poetry.core.semver.helpers import parse_constraint
 from poetry.core.toml.file import TOMLFile
 
@@ -152,6 +153,15 @@ def test_create_pyproject_from_package(project: str):
     result = pyproject["tool"]["poetry"]
     expected = poetry.pyproject.poetry_config
 
+    # Extras are normalized as they are read.
+    extras = expected.pop("extras", None)
+    if extras is not None:
+        normalized_extras = {
+            canonicalize_name(extra): dependencies
+            for extra, dependencies in extras.items()
+        }
+        expected["extras"] = normalized_extras
+
     # packages do not support this at present
     expected.pop("scripts", None)
 

tests/utils/test_helpers.py

@@ -2,8 +2,6 @@
 
 from poetry.core.utils.helpers import parse_requires
 
-from poetry.utils.helpers import safe_extra
-
 
 def test_parse_requires():
     requires = """\
@@ -59,10 +57,3 @@ def test_parse_requires():
     ]
     # fmt: on
     assert result == expected
-
-
-def test_safe_extra():
-    extra = "pandas.CSVDataSet"
-    result = safe_extra(extra)
-    expected = "pandas.csvdataset"
-    assert result == expected