Fix extras with dependency markers

src/poetry/core/factory.py

@@ -186,8 +186,6 @@ def configure_package(
                         dep.in_extras.append(extra_name)
                         package.extras[extra_name].append(dep)
 
-                        break
-
         if "build" in config:
             build = config["build"]
             if not isinstance(build, dict):

tests/fixtures/project_with_markers_and_extras/pyproject.toml

@@ -0,0 +1,20 @@
+[tool.poetry]
+name = "project-with-markers-and-extras"
+version = "1.2.3"
+description = "This is a description"
+authors = ["Your Name <you@example.com>"]
+license = "MIT"
+
+packages = [
+    {include = "project"}
+]
+
+[tool.poetry.dependencies]
+python = "*"
+orjson = [
+    { url = "https://example/location/orjson-3.8.0-cp310-cp310-manylinux_2_28_x86_64.whl", platform = "linux", optional = true },
+    { url = "https://example/location/orjson-3.8.0-cp310-cp310-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl", platform = "darwin", optional = true }
+]
+
+[tool.poetry.extras]
+all = ["orjson"]

tests/test_factory.py

@@ -8,9 +8,11 @@
 import pytest
 
 from poetry.core.factory import Factory
+from poetry.core.packages.url_dependency import URLDependency
 from poetry.core.packages.vcs_dependency import VCSDependency
 from poetry.core.semver.helpers import parse_constraint
 from poetry.core.toml import TOMLFile
+from poetry.core.version.markers import SingleMarker
 
 
 if TYPE_CHECKING:
@@ -323,6 +325,26 @@ def test_create_poetry_with_groups_and_explicit_main() -> None:
     }
 
 
+def test_create_poetry_with_markers_and_extras() -> None:
+    poetry = Factory().create_poetry(fixtures_dir / "project_with_markers_and_extras")
+
+    package = poetry.package
+    dependencies = package.requires
+    extras = package.extras
+
+    assert len(dependencies) == 2
+    assert {dependency.name for dependency in dependencies} == {"orjson"}
+    assert set(extras["all"]) == set(dependencies)
+    for dependency in dependencies:
+        assert dependency.in_extras == ["all"]
+        assert isinstance(dependency, URLDependency)
+        assert isinstance(dependency.marker, SingleMarker)
+        assert dependency.marker.name == "sys_platform"
+        assert dependency.marker.value == (
+            "darwin" if "macosx" in dependency.url else "linux"
+        )
+
+
 @pytest.mark.parametrize(
     "constraint, exp_python, exp_marker",
     [