Correctly identify the installed collections when duplicates exist

pyproject.toml

@@ -45,7 +45,7 @@ changelog = "https://github.com/ansible/ansible-compat/releases"
 
 [tool.coverage.report]
 exclude_lines = ["pragma: no cover", "if TYPE_CHECKING:"]
-fail_under = 92
+fail_under = 100
 skip_covered = true
 show_missing = true
 
@@ -346,6 +346,7 @@ filterwarnings = [
 testpaths = ["test"]
 
 [tool.ruff]
+extend-include = ["src/ansible_compat/_version.py"]
 target-version = "py39"
 lint.select = ["ALL"]
 lint.ignore = [

src/ansible_compat/runtime.py

@@ -1,5 +1,7 @@
 """Ansible runtime environment manager."""
 
+# pylint: disable=too-many-lines
+
 from __future__ import annotations
 
 import contextlib
@@ -271,7 +273,15 @@ def load_collections(self) -> None:
         self.collections = OrderedDict()
         no_collections_msg = "None of the provided paths were usable"
 
-        proc = self.run(["ansible-galaxy", "collection", "list", "--format=json"])
+        proc = self.run(
+            [
+                "ansible-galaxy",
+                "collection",
+                "list",
+                "--format=json",
+                f"-p={':'.join(self.config.collections_paths)}",
+            ],
+        )
         if proc.returncode == RC_ANSIBLE_OPTIONS_ERROR and (
             no_collections_msg in proc.stdout or no_collections_msg in proc.stderr
         ):  # pragma: no cover
@@ -298,11 +308,15 @@ def load_collections(self) -> None:
                     msg = f"Unexpected collection data, {collection_info}"
                     raise TypeError(msg)
 
-                self.collections[collection] = Collection(
-                    name=collection,
-                    version=collection_info["version"],
-                    path=path,
-                )
+                if collection in self.collections:
+                    msg = f"Multiple versions of '{collection}' were found installed, only the first one will be used, {self.collections[collection].version} ({self.collections[collection].path})."
+                    logging.warning(msg)
+                else:
+                    self.collections[collection] = Collection(
+                        name=collection,
+                        version=collection_info["version"],
+                        path=path,
+                    )
 
     def _ensure_module_available(self) -> None:
         """Assure that Ansible Python module is installed and matching CLI version."""

test/test_runtime.py

@@ -449,9 +449,16 @@ def test_require_collection_preexisting_broken(runtime_tmp: Runtime) -> None:
         runtime_tmp.require_collection("foo.bar")
 
 
-def test_require_collection(runtime_tmp: Runtime) -> None:
-    """Check that require collection successful install case."""
-    runtime_tmp.require_collection("community.molecule", "0.1.0")
+def test_require_collection_install(runtime_tmp: Runtime) -> None:
+    """Check that require collection successful install case, including upgrade path."""
+    runtime_tmp.install_collection("ansible.posix:==1.5.2")
+    runtime_tmp.load_collections()
+    collection = runtime_tmp.collections["ansible.posix"]
+    assert collection.version == "1.5.2"
+    runtime_tmp.require_collection(name="ansible.posix", version="1.5.4", install=True)
+    runtime_tmp.load_collections()
+    collection = runtime_tmp.collections["ansible.posix"]
+    assert collection.version == "1.5.4"
 
 
 @pytest.mark.parametrize(