diff --git a/conda_lock/src_parser/environment_yaml.py b/conda_lock/src_parser/environment_yaml.py
index f274c16f..e55452a8 100644
--- a/conda_lock/src_parser/environment_yaml.py
+++ b/conda_lock/src_parser/environment_yaml.py
@@ -7,7 +7,6 @@
 import yaml
 
 from conda_lock.models.lock_spec import Dependency, LockSpecification
-from conda_lock.src_parser.aggregation import aggregate_lock_specs
 from conda_lock.src_parser.conda_common import conda_spec_to_versioned_dep
 from conda_lock.src_parser.selectors import filter_platform_selectors
 
@@ -27,10 +26,10 @@ def parse_conda_requirement(req: str) -> Tuple[str, str]:
 
 
 def _parse_environment_file_for_platform(
-    environment_file: pathlib.Path,
     content: str,
+    category: str,
     platform: str,
-) -> LockSpecification:
+) -> List[Dependency]:
     """
     Parse dependencies from a conda environment specification for an
     assumed target platform.
@@ -44,12 +43,7 @@ def _parse_environment_file_for_platform(
     """
     filtered_content = "\n".join(filter_platform_selectors(content, platform=platform))
     env_yaml_data = yaml.safe_load(filtered_content)
-
     specs = env_yaml_data["dependencies"]
-    channels: List[str] = env_yaml_data.get("channels", [])
-
-    # These extension fields are nonstandard
-    category: str = env_yaml_data.get("category") or "main"
 
     # Split out any sub spec sections from the dependencies mapping
     mapping_specs = [x for x in specs if not isinstance(x, str)]
@@ -87,11 +81,7 @@ def _parse_environment_file_for_platform(
             # ensure pip is in target env
             dependencies.append(parse_python_requirement("pip", manager="conda"))
 
-    return LockSpecification(
-        dependencies={platform: dependencies},
-        channels=channels,  # type: ignore
-        sources=[environment_file],
-    )
+    return dependencies
 
 
 def parse_platforms_from_env_file(environment_file: pathlib.Path) -> List[str]:
@@ -125,22 +115,20 @@ def parse_environment_file(
     with environment_file.open("r") as fo:
         content = fo.read()
 
-    # Parse with selectors for each target platform
-    spec = aggregate_lock_specs(
-        [
-            _parse_environment_file_for_platform(
-                environment_file,
-                content,
-                platform,
-            )
-            for platform in platforms
-        ]
-    )
+    env_yaml_data = yaml.safe_load(content)
+    channels: List[str] = env_yaml_data.get("channels", [])
 
-    # Remove platform selectors if they apply to all targets
-    for platform in spec.platforms:
-        for dep in spec.dependencies[platform]:
-            if dep.selectors.platform == platforms:
-                dep.selectors.platform = None
+    # These extension fields are nonstandard
+    category: str = env_yaml_data.get("category") or "main"
 
-    return spec
+    # Parse with selectors for each target platform
+    dep_map = {
+        platform: _parse_environment_file_for_platform(content, category, platform)
+        for platform in platforms
+    }
+
+    return LockSpecification(
+        dependencies=dep_map,
+        channels=channels,  # type: ignore
+        sources=[environment_file],
+    )