Limit Core Pixi tests to the package test suite

Signed-off-by: Ralf W. Grosse-Kunstleve <rgrossekunst@nvidia.com>

Author: rwgk

cuda_core/pixi.toml

@@ -319,7 +319,7 @@ cmd = ["$PIXI_PROJECT_ROOT/tests/cython/build_tests.bat"]
 [target.linux.tasks.test]
 cmd = [
     "pytest",
-    "$PIXI_PROJECT_ROOT",
+    "$PIXI_PROJECT_ROOT/tests",
     "--override-ini",
     "norecursedirs=\"\"", # include cython tests (ignore by default config)
 ]
@@ -328,7 +328,7 @@ depends-on = [{ task = "build-cython-tests" }]
 [target.win-64.tasks.test]
 cmd = [
     "pytest",
-    "$PIXI_PROJECT_ROOT",
+    "$PIXI_PROJECT_ROOT/tests",
     "--override-ini",
     "norecursedirs=\"\"",  # include cython tests (ignore by default config)
 ]