diff --git a/poetry.lock b/poetry.lock
index 64e272c30..170c2d4f4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -696,6 +696,7 @@ files = [
     {file = "PyYAML-6.0.1-cp311-cp311-win_amd64.whl", hash = "sha256:bf07ee2fef7014951eeb99f56f39c9bb4af143d8aa3c21b1677805985307da34"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:855fb52b0dc35af121542a76b9a84f8d1cd886ea97c84703eaa6d88e37a2ad28"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:40df9b996c2b73138957fe23a16a4f0ba614f4c0efce1e9406a184b6d07fa3a9"},
+    {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:a08c6f0fe150303c1c6b71ebcd7213c2858041a7e01975da3a99aed1e7a378ef"},
     {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6c22bec3fbe2524cde73d7ada88f6566758a8f7227bfbf93a408a9d86bcc12a0"},
     {file = "PyYAML-6.0.1-cp312-cp312-musllinux_1_1_x86_64.whl", hash = "sha256:8d4e9c88387b0f5c7d5f281e55304de64cf7f9c0021a3525bd3b1c542da3b0e4"},
     {file = "PyYAML-6.0.1-cp312-cp312-win32.whl", hash = "sha256:d483d2cdf104e7c9fa60c544d92981f12ad66a457afae824d146093b8c294c54"},
@@ -955,13 +956,13 @@ files = [
 
 [[package]]
 name = "typing-extensions"
-version = "4.9.0"
+version = "4.10.0"
 description = "Backported and Experimental Type Hints for Python 3.8+"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "typing_extensions-4.9.0-py3-none-any.whl", hash = "sha256:af72aea155e91adfc61c3ae9e0e342dbc0cba726d6cba4b6c72c1f34e47291cd"},
-    {file = "typing_extensions-4.9.0.tar.gz", hash = "sha256:23478f88c37f27d76ac8aee6c905017a143b0b1b886c3c9f66bc2fd94f9f5783"},
+    {file = "typing_extensions-4.10.0-py3-none-any.whl", hash = "sha256:69b1a937c3a517342112fb4c6df7e72fc39a38e7891a5730ed4985b5214b5475"},
+    {file = "typing_extensions-4.10.0.tar.gz", hash = "sha256:b0abd7c89e8fb96f98db18d86106ff1d90ab692004eb746cf6eda2682f91b3cb"},
 ]
 
 [[package]]
diff --git a/src/poetry/core/factory.py b/src/poetry/core/factory.py
index 5e74991e3..400ac481c 100644
--- a/src/poetry/core/factory.py
+++ b/src/poetry/core/factory.py
@@ -8,6 +8,7 @@
 from typing import Any
 from typing import List
 from typing import Union
+from typing import cast
 
 from packaging.utils import canonicalize_name
 
@@ -20,6 +21,8 @@
 
     from poetry.core.packages.dependency import Dependency
     from poetry.core.packages.dependency_group import DependencyGroup
+    from poetry.core.packages.project_package import BuildConfigSpec
+    from poetry.core.packages.project_package import IncludeSpec
     from poetry.core.packages.project_package import ProjectPackage
     from poetry.core.poetry import Poetry
     from poetry.core.spdx.license import License
@@ -197,9 +200,11 @@ def configure_package(
 
         if "build" in config:
             build = config["build"]
+            if not build:
+                build = {}
             if not isinstance(build, dict):
                 build = {"script": build}
-            package.build_config = build or {}
+            package.build_config = cast("BuildConfigSpec", build)
 
         if "include" in config:
             package.include = []
@@ -212,8 +217,7 @@ def configure_package(
                 if formats and not isinstance(formats, list):
                     formats = [formats]
                 include["format"] = formats
-
-                package.include.append(include)
+                package.include.append(cast("IncludeSpec", include))
 
         if "exclude" in config:
             package.exclude = config["exclude"]
diff --git a/src/poetry/core/masonry/builders/builder.py b/src/poetry/core/masonry/builders/builder.py
index a6a6fd60e..3718bb540 100644
--- a/src/poetry/core/masonry/builders/builder.py
+++ b/src/poetry/core/masonry/builders/builder.py
@@ -66,7 +66,7 @@ def _module(self) -> Module:
                 formats = [formats]
 
             if (
-                formats
+                len(formats) > 0
                 and self.format
                 and self.format not in formats
                 and not self._ignore_packages_formats
@@ -80,7 +80,7 @@ def _module(self) -> Module:
             formats = include.get("format", [])
 
             if (
-                formats
+                len(formats) > 0
                 and self.format
                 and self.format not in formats
                 and not self._ignore_packages_formats
diff --git a/src/poetry/core/packages/project_package.py b/src/poetry/core/packages/project_package.py
index fad048258..e20041c24 100644
--- a/src/poetry/core/packages/project_package.py
+++ b/src/poetry/core/packages/project_package.py
@@ -3,20 +3,38 @@
 import warnings
 
 from typing import TYPE_CHECKING
-from typing import Any
+from typing import Literal
 from typing import Mapping
 from typing import Sequence
+from typing import TypedDict
 
 from poetry.core.constraints.version import parse_constraint
+from poetry.core.packages.package import Package
+from poetry.core.packages.utils.utils import create_nested_marker
 from poetry.core.version.markers import parse_marker
 
 
 if TYPE_CHECKING:
+    from typing_extensions import NotRequired
+
     from poetry.core.constraints.version import Version
     from poetry.core.packages.dependency import Dependency
 
-from poetry.core.packages.package import Package
-from poetry.core.packages.utils.utils import create_nested_marker
+    SupportedPackageFormats = Literal["sdist", "wheel"]
+
+    BuildConfigSpec = TypedDict(
+        "BuildConfigSpec",
+        {"script": NotRequired[str], "generate-setup-file": NotRequired[bool]},
+    )
+
+    class PackageSpec(TypedDict):
+        include: str
+        to: str
+        format: list[SupportedPackageFormats]
+
+    class IncludeSpec(TypedDict):
+        path: str
+        format: list[SupportedPackageFormats]
 
 
 class ProjectPackage(Package):
@@ -39,10 +57,10 @@ def __init__(
         # Attributes must be immutable for clone() to be safe!
         # (For performance reasons, clone only creates a copy instead of a deep copy).
 
-        self.build_config: Mapping[str, Any] = {}
-        self.packages: Sequence[Mapping[str, Any]] = []
-        self.include: Sequence[Mapping[str, Any]] = []
-        self.exclude: Sequence[Mapping[str, Any]] = []
+        self.build_config: BuildConfigSpec = {}
+        self.packages: Sequence[PackageSpec] = []
+        self.include: Sequence[IncludeSpec] = []
+        self.exclude: Sequence[IncludeSpec] = []
         self.custom_urls: Mapping[str, str] = {}
 
         if self._python_versions == "*":