add clan_core path helper function

pkgs/clan-cli/tests/root.py

@@ -4,12 +4,13 @@ import pytest
 
 TEST_ROOT = Path(__file__).parent.resolve()
 PROJECT_ROOT = TEST_ROOT.parent
+CLAN_CORE = PROJECT_ROOT.parent.parent
 
 
 @pytest.fixture(scope="session")
 def project_root() -> Path:
     """
-    Root directory of the tests
+    Root directory the clan-cli
     """
     return PROJECT_ROOT
 
@@ -20,3 +21,11 @@ def test_root() -> Path:
     Root directory of the tests
     """
     return TEST_ROOT
+
+
+@pytest.fixture(scope="session")
+def clan_core() -> Path:
+    """
+    Directory of the clan-core flake
+    """
+    return CLAN_CORE

pkgs/clan-cli/tests/test_flake.py

@@ -5,7 +5,7 @@ from pathlib import Path
 from typing import Iterator
 
 import pytest
-from root import PROJECT_ROOT
+from root import CLAN_CORE
 
 from clan_cli.dirs import nixpkgs_source
 
@@ -46,9 +46,8 @@ def test_flake(monkeymodule: pytest.MonkeyPatch) -> Iterator[Path]:
 
 @pytest.fixture(scope="module")
 def test_flake_with_core(monkeymodule: pytest.MonkeyPatch) -> Iterator[Path]:
-    clan_core_flake = PROJECT_ROOT.parent.parent
-    if not (clan_core_flake / "flake.nix").exists():
+    if not (CLAN_CORE / "flake.nix").exists():
         raise Exception(
             "clan-core flake not found. This test requires the clan-core flake to be present"
         )
-    yield from create_flake(monkeymodule, "test_flake_with_core", clan_core_flake)
+    yield from create_flake(monkeymodule, "test_flake_with_core", CLAN_CORE)