normalize source distribution names

src/poetry/core/masonry/builders/sdist.py

@@ -18,6 +18,7 @@
 
 from poetry.core.masonry.builders.builder import Builder
 from poetry.core.masonry.builders.builder import BuildIncludeFile
+from poetry.core.masonry.utils.helpers import distribution_name
 
 
 if TYPE_CHECKING:
@@ -65,7 +66,8 @@ def build(
         if not target_dir.exists():
             target_dir.mkdir(parents=True)
 
-        target = target_dir / f"{self._package.pretty_name}-{self._meta.version}.tar.gz"
+        name = distribution_name(self._package.name)
+        target = target_dir / f"{name}-{self._meta.version}.tar.gz"
         gz = GzipFile(target.as_posix(), mode="wb", mtime=0)
         tar = tarfile.TarFile(
             target.as_posix(), mode="w", fileobj=gz, format=tarfile.PAX_FORMAT

src/poetry/core/masonry/builders/wheel.py

@@ -24,12 +24,14 @@
 from poetry.core.constraints.version import parse_constraint
 from poetry.core.masonry.builders.builder import Builder
 from poetry.core.masonry.builders.sdist import SdistBuilder
-from poetry.core.masonry.utils.helpers import escape_name
+from poetry.core.masonry.utils.helpers import distribution_name
 from poetry.core.masonry.utils.helpers import normalize_file_permissions
 from poetry.core.masonry.utils.package_include import PackageInclude
 
 
 if TYPE_CHECKING:
+    from packaging.utils import NormalizedName
+
     from poetry.core.poetry import Poetry
 
 wheel_file_template = """\
@@ -280,7 +282,7 @@ def wheel_data_folder(self) -> str:
 
     @property
     def wheel_filename(self) -> str:
-        name = escape_name(self._package.pretty_name)
+        name = distribution_name(self._package.name)
         version = self._meta.version
         return f"{name}-{version}-{self.tag}.whl"
 
@@ -289,9 +291,8 @@ def supports_python2(self) -> bool:
             parse_constraint(">=2.0.0 <3.0.0")
         )
 
-    def dist_info_name(self, distribution: str, version: str) -> str:
-        escaped_name = escape_name(distribution)
-
+    def dist_info_name(self, name: NormalizedName, version: str) -> str:
+        escaped_name = distribution_name(name)
         return f"{escaped_name}-{version}.dist-info"
 
     @property

src/poetry/core/masonry/utils/helpers.py

@@ -3,6 +3,17 @@
 import re
 import warnings
 
+from typing import TYPE_CHECKING
+from typing import NewType
+from typing import cast
+
+
+if TYPE_CHECKING:
+    from packaging.utils import NormalizedName
+
+
+DistributionName = NewType("DistributionName", str)
+
 
 def normalize_file_permissions(st_mode: int) -> int:
     """
@@ -39,4 +50,35 @@ def escape_name(name: str) -> str:
     Escaped wheel name as specified in https://packaging.python.org/en/latest/specifications/binary-distribution-format/#escaping-and-unicode.
     This function should only be used for the generation of artifact names, and not to normalize or filter existing artifact names.
     """
+    warnings.warn(
+        "escape_name() is deprecated. Use packaging.utils.canonicalize_name() and"
+        " distribution_name() instead.",
+        DeprecationWarning,
+        stacklevel=2,
+    )
     return re.sub(r"[-_.]+", "_", name, flags=re.UNICODE).lower()
+
+
+def distribution_name(name: NormalizedName) -> DistributionName:
+    """
+    A normalized name, but with "-" replaced by "_". This is used in various places:
+
+    https://packaging.python.org/en/latest/specifications/binary-distribution-format/#escaping-and-unicode
+
+    In distribution names ... This is equivalent to PEP 503 normalisation followed by
+    replacing - with _.
+
+    https://packaging.python.org/en/latest/specifications/source-distribution-format/#source-distribution-file-name
+
+    ... {name} is normalised according to the same rules as for binary distributions
+
+    https://packaging.python.org/en/latest/specifications/recording-installed-packages/#the-dist-info-directory
+
+    This directory is named as {name}-{version}.dist-info, with name and version
+    fields corresponding to Core metadata specifications. Both fields must be
+    normalized (see PEP 503 and PEP 440 for the definition of normalization for each
+    field respectively), and replace dash (-) characters with underscore
+    (_) characters ...
+    """
+    distribution_name = name.replace("-", "_")
+    return cast(DistributionName, distribution_name)

tests/integration/test_pep517.py

@@ -48,7 +48,7 @@ def test_pep517_build_sdist(
         outdir=str(temporary_directory),
         distributions=["sdist"],
     )
-    distributions = list(temporary_directory.glob("poetry-core-*.tar.gz"))
+    distributions = list(temporary_directory.glob("poetry_core-*.tar.gz"))
     assert len(distributions) == 1
 
 

tests/masonry/builders/test_complete.py

@@ -427,7 +427,7 @@ def test_module_src() -> None:
     builder = Builder(Factory().create_poetry(module_path))
     builder.build(fmt="all")
 
-    sdist = module_path / "dist" / "module-src-0.1.tar.gz"
+    sdist = module_path / "dist" / "module_src-0.1.tar.gz"
 
     assert sdist.exists()
 
@@ -451,7 +451,7 @@ def test_package_src() -> None:
     builder = Builder(Factory().create_poetry(module_path))
     builder.build(fmt="all")
 
-    sdist = module_path / "dist" / "package-src-0.1.tar.gz"
+    sdist = module_path / "dist" / "package_src-0.1.tar.gz"
 
     assert sdist.exists()
 
@@ -476,7 +476,7 @@ def test_split_source() -> None:
     builder = Builder(Factory().create_poetry(module_path))
     builder.build(fmt="all")
 
-    sdist = module_path / "dist" / "split-source-0.1.tar.gz"
+    sdist = module_path / "dist" / "split_source-0.1.tar.gz"
 
     assert sdist.exists()
 
@@ -522,7 +522,7 @@ def test_package_with_include(mocker: MockerFixture) -> None:
     builder = Builder(Factory().create_poetry(module_path))
     builder.build(fmt="all")
 
-    sdist = fixtures_dir / "with-include" / "dist" / "with-include-1.2.3.tar.gz"
+    sdist = fixtures_dir / "with-include" / "dist" / "with_include-1.2.3.tar.gz"
 
     assert sdist.exists()
 
@@ -589,7 +589,7 @@ def test_respect_format_for_explicit_included_files() -> None:
     builder = Builder(Factory().create_poetry(module_path))
     builder.build(fmt="all")
 
-    sdist = module_path / "dist" / "exclude-whl-include-sdist-0.1.0.tar.gz"
+    sdist = module_path / "dist" / "exclude_whl_include_sdist-0.1.0.tar.gz"
 
     assert sdist.exists()
 

tests/masonry/builders/test_sdist.py

@@ -255,7 +255,7 @@ def test_package() -> None:
     builder = SdistBuilder(poetry)
     builder.build()
 
-    sdist = fixtures_dir / "complete" / "dist" / "my-package-1.2.3.tar.gz"
+    sdist = fixtures_dir / "complete" / "dist" / "my_package-1.2.3.tar.gz"
 
     assert sdist.exists()
 
@@ -272,7 +272,7 @@ def test_sdist_reproducibility() -> None:
         builder = SdistBuilder(poetry)
         builder.build()
 
-        sdist = fixtures_dir / "complete" / "dist" / "my-package-1.2.3.tar.gz"
+        sdist = fixtures_dir / "complete" / "dist" / "my_package-1.2.3.tar.gz"
 
         assert sdist.exists()
 
@@ -388,7 +388,7 @@ def test_with_src_module_file() -> None:
 
     builder.build()
 
-    sdist = fixtures_dir / "source_file" / "dist" / "module-src-0.1.tar.gz"
+    sdist = fixtures_dir / "source_file" / "dist" / "module_src-0.1.tar.gz"
 
     assert sdist.exists()
 
@@ -413,7 +413,7 @@ def test_with_src_module_dir() -> None:
 
     builder.build()
 
-    sdist = fixtures_dir / "source_package" / "dist" / "package-src-0.1.tar.gz"
+    sdist = fixtures_dir / "source_package" / "dist" / "package_src-0.1.tar.gz"
 
     assert sdist.exists()
 
@@ -465,7 +465,7 @@ def get_ignored_files(self, folder: Path | None = None) -> list[str]:
     builder.build()
 
     sdist = (
-        fixtures_dir / "default_with_excluded_data" / "dist" / "my-package-1.2.3.tar.gz"
+        fixtures_dir / "default_with_excluded_data" / "dist" / "my_package-1.2.3.tar.gz"
     )
 
     assert sdist.exists()
@@ -499,7 +499,7 @@ def test_src_excluded_nested_data() -> None:
     builder = SdistBuilder(poetry)
     builder.build()
 
-    sdist = module_path / "dist" / "my-package-1.2.3.tar.gz"
+    sdist = module_path / "dist" / "my_package-1.2.3.tar.gz"
 
     assert sdist.exists()
 
@@ -554,7 +554,7 @@ def test_includes() -> None:
 
     builder.build()
 
-    sdist = fixtures_dir / "with-include" / "dist" / "with-include-1.2.3.tar.gz"
+    sdist = fixtures_dir / "with-include" / "dist" / "with_include-1.2.3.tar.gz"
 
     assert sdist.exists()
 
@@ -574,7 +574,7 @@ def test_includes_with_inline_table() -> None:
         fixtures_dir
         / "with_include_inline_table"
         / "dist"
-        / "with-include-1.2.3.tar.gz"
+        / "with_include-1.2.3.tar.gz"
     )
 
     assert sdist.exists()
@@ -608,7 +608,7 @@ def test_sdist_package_pep_561_stub_only() -> None:
     builder = SdistBuilder(poetry)
     builder.build()
 
-    sdist = root / "dist" / "pep-561-stubs-0.1.tar.gz"
+    sdist = root / "dist" / "pep_561_stubs-0.1.tar.gz"
 
     assert sdist.exists()
 
@@ -626,7 +626,7 @@ def test_sdist_disable_setup_py() -> None:
     builder = SdistBuilder(poetry)
     builder.build()
 
-    sdist = module_path / "dist" / "my-package-1.2.3.tar.gz"
+    sdist = module_path / "dist" / "my_package-1.2.3.tar.gz"
 
     assert sdist.exists()
 

tests/masonry/utils/test_helpers.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+import warnings
+
 import pytest
 
 from poetry.core.masonry.utils.helpers import escape_name
@@ -16,4 +18,6 @@
     ],
 )
 def test_escape_name(name: str, expected: str) -> None:
-    assert escape_name(name) == expected
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore")
+        assert escape_name(name) == expected