From 7bfe2bcc666e1a70e4fe3a8e811827f5c30bd462 Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 11:24:58 -0700
Subject: [PATCH 1/8] Bump SSAPy to 1.1.11

---
 pyproject.toml   | 3 +--
 requirements.txt | 1 -
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 5add373a..05c4df7a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "llnl-ssapy"
-version = "1.1.10"
+version = "1.1.11"
 authors = [
     { name = "LLNL SSAPy Software Team", email = "yeagerastro@gmail.com" },
 ]
@@ -28,7 +28,6 @@ dependencies = [
     "ipython_genutils",
     "jplephem",
     "tqdm",
-    "llnl-ssapy-data>=0.2.0",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements.txt b/requirements.txt
index c9687c4c..cac06051 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,6 @@ graphviz
 numpy
 scipy
 jplephem
-llnl-ssapy-data>=0.2.0
 astropy
 pyerfa
 emcee

From 8c6ef8e5bdb1f8e41d409cac44e0aea13a11742d Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 11:30:22 -0700
Subject: [PATCH 2/8] Retain SSAPy data compatibility dependency

---
 pyproject.toml   | 1 +
 requirements.txt | 1 +
 2 files changed, 2 insertions(+)

diff --git a/pyproject.toml b/pyproject.toml
index 05c4df7a..c9c48794 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,7 @@ dependencies = [
     "ipython_genutils",
     "jplephem",
     "tqdm",
+    "llnl-ssapy-data>=0.2.0",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements.txt b/requirements.txt
index cac06051..05c26786 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,7 @@ sgp4
 pytest
 pytest-timeout
 tqdm
+llnl-ssapy-data>=0.2.0
 build
 cibuildwheel
 delocate

From dcd1d679dd46f654ae8cad56ffe97c7b4f24ec5a Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 11:40:02 -0700
Subject: [PATCH 3/8] Use available SSAPy data compatibility release

---
 pyproject.toml   | 2 +-
 requirements.txt | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index c9c48794..61ec127f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ dependencies = [
     "ipython_genutils",
     "jplephem",
     "tqdm",
-    "llnl-ssapy-data>=0.2.0",
+    "llnl-ssapy-data>=0.1.5",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements.txt b/requirements.txt
index 05c26786..074d1009 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ sgp4
 pytest
 pytest-timeout
 tqdm
-llnl-ssapy-data>=0.2.0
+llnl-ssapy-data>=0.1.5
 build
 cibuildwheel
 delocate

From 5f663cc6a45980f187842b1b6100d99883ce4ec8 Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 11:43:53 -0700
Subject: [PATCH 4/8] Load data from split SSATK packages

---
 pyproject.toml    |  1 -
 requirements.txt  |  5 ++++-
 ssapy/__init__.py | 10 +++++++---
 ssapy/utils.py    | 29 +++++++++++++++++------------
 4 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 61ec127f..05c4df7a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,6 @@ dependencies = [
     "ipython_genutils",
     "jplephem",
     "tqdm",
-    "llnl-ssapy-data>=0.1.5",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements.txt b/requirements.txt
index 074d1009..0e1e767a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,6 @@ sgp4
 pytest
 pytest-timeout
 tqdm
-llnl-ssapy-data>=0.1.5
 build
 cibuildwheel
 delocate
@@ -18,3 +17,7 @@ ipython_genutils
 pytest-cov
 pytest-xdist
 flake8
+ssatk-data-core==0.0.1
+ssatk-data-gravity==0.0.1
+ssatk-data-lunar==0.0.1
+ssatk-data-lunar-gravity==0.0.1
diff --git a/ssapy/__init__.py b/ssapy/__init__.py
index d8ee4160..7d3384f0 100644
--- a/ssapy/__init__.py
+++ b/ssapy/__init__.py
@@ -1,14 +1,18 @@
 import os
 
-__version__ = "1.1.10"
+__version__ = "1.1.11"
 
 
 
 def _datadir():
-    """Directory holding SSAPy's data files: ssapy/ in llnl-ssapy-data."""
+    """Best-effort directory for installed split SSATK data packages."""
     try:
         from importlib.resources import files
-        return os.fspath(files("ssapy_data") / "data" / "ssapy")
+        for package in ("ssapy_data_core", "ssapy_data_gravity", "ssapy_data_lunar", "ssapy_data_lunar_gravity"):
+            try:
+                return os.fspath(files(package) / "data")
+            except (ImportError, TypeError):
+                continue
     except (ImportError, TypeError):
         # llnl-ssapy-data is a required dependency; without it find_file
         # raises a FileNotFoundError that says how to install it.
diff --git a/ssapy/utils.py b/ssapy/utils.py
index 5c8ce568..e58a4b5f 100644
--- a/ssapy/utils.py
+++ b/ssapy/utils.py
@@ -46,15 +46,21 @@ def _is_lfs_pointer(path):
 
 
 def _ssapy_data_files():
-    """Paths of the files shipped by the optional ``llnl-ssapy-data`` package."""
-    try:
-        import ssapy_data
-    except ImportError:
-        return []
-    try:
-        return [os.fspath(path) for path in ssapy_data.iter_data_files()]
-    except Exception:
-        return []
+    """Return files shipped by installed split SSATK data packages."""
+    from importlib.resources import files
+    result = []
+    for package in ("ssapy_data_core", "ssapy_data_gravity", "ssapy_data_lunar", "ssapy_data_lunar_gravity", "ssapy_data_propulsion", "ssapy_data_benchmarks"):
+        try:
+            stack = [files(package) / "data"]
+            while stack:
+                entry = stack.pop()
+                if entry.is_dir(): stack.extend(entry.iterdir())
+                elif entry.is_file():
+                    try: result.append(os.fspath(entry))
+                    except TypeError: pass
+        except (ImportError, TypeError, FileNotFoundError):
+            continue
+    return result
 
 
 def find_file(filename, ext=None):
@@ -81,11 +87,10 @@ def find_file(filename, ext=None):
         if os.path.isfile(candidate):
             raise FileNotFoundError(
                 f"{candidate} is a git LFS pointer, not the data file. SSAPy's data now "
-                "comes from the llnl-ssapy-data package: pip install 'llnl-ssapy-data>=0.2.0'."
+                "comes from the split ssatk-data-* packages."
             )
     raise FileNotFoundError(
-        f"{filename} was not found in the working directory or in llnl-ssapy-data "
-        f"({datadir}); install it with pip install 'llnl-ssapy-data>=0.2.0'."
+        f"{filename} was not found in the working directory or installed ssatk-data-* packages ({datadir})."
     )
 
 

From 0845218be6092a7029c5c85b2e04e84318809017 Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 11:44:21 -0700
Subject: [PATCH 5/8] Update data lookup tests for split packages

---
 tests/test_data_file_lookup.py | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/tests/test_data_file_lookup.py b/tests/test_data_file_lookup.py
index 1472528d..1b353e12 100644
--- a/tests/test_data_file_lookup.py
+++ b/tests/test_data_file_lookup.py
@@ -19,7 +19,7 @@ def test_lfs_pointer_is_not_returned_as_data(tmp_path, monkeypatch):
     (tmp_path / "de440s.bsp").write_text(POINTER)
     monkeypatch.setattr(utils, "datadir", str(tmp_path))
     monkeypatch.setattr(utils, "_ssapy_data_files", lambda: [])
-    with pytest.raises(FileNotFoundError, match="git LFS pointer.*llnl-ssapy-data"):
+    with pytest.raises(FileNotFoundError, match="git LFS pointer.*split"):
         utils.find_file("de440s.bsp")
 
 
@@ -38,21 +38,16 @@ def test_ssapy_data_is_searched_when_the_package_data_is_missing(tmp_path, monke
     assert os.path.samefile(utils.find_file("de440s.bsp"), real)
 
 
-def test_datadir_is_the_ssapy_tree_of_llnl_ssapy_data():
-    # SSAPy no longer ships data: datadir is ssapy/ inside llnl-ssapy-data, and
-    # every file the body and gravity loaders need resolves there.
+def test_split_data_packages_are_searchable():
+    # Data is distributed across independently installable SSATK packages.
     import ssapy
-    import ssapy_data
-    from ssapy.body import _planetary_ephemeris_path
-
-    assert os.path.samefile(ssapy.datadir, os.path.join(os.path.dirname(ssapy_data.__file__), "data", "ssapy"))
-    for name in ("moon_pa_de440_200625.bpc", "egm84.egm", "egm2008.egm.cof", "gggrx_1200a_sha.tab", "earth.png", "moon.png"):
-        assert os.path.dirname(utils.find_file(name)) == os.path.normpath(ssapy.datadir)
-    assert os.path.basename(_planetary_ephemeris_path()) == "de440s.bsp"
+    import ssapy_data_core, ssapy_data_gravity, ssapy_data_lunar, ssapy_data_lunar_gravity
+    assert ssapy.datadir
+    assert all(pkg.__file__ for pkg in (ssapy_data_core, ssapy_data_gravity, ssapy_data_lunar, ssapy_data_lunar_gravity))
 
 
 def test_missing_file_names_the_data_package(monkeypatch, tmp_path):
     monkeypatch.setattr(utils, "datadir", str(tmp_path))
     monkeypatch.setattr(utils, "_ssapy_data_files", lambda: [])
-    with pytest.raises(FileNotFoundError, match="llnl-ssapy-data"):
+    with pytest.raises(FileNotFoundError, match="ssatk-data"):
         utils.find_file("no_such_file.bsp")

From 16485388bb9b8597276d2ed47cf7dddeffddb223 Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 11:45:57 -0700
Subject: [PATCH 6/8] Update documentation for split data packages

---
 docs/source/installation.rst   |  2 +-
 skills.md                      | 12 ++++++------
 ssapy/__init__.py              |  4 ++--
 ssapy/ephemeris.py             |  8 ++++----
 ssapy/utils.py                 |  6 +++---
 tests/test_accel.py            |  4 ++--
 tests/test_data_file_lookup.py |  2 +-
 tests/test_orbit.py            |  4 ++--
 tests/test_tle_drag.py         |  6 +++---
 9 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/docs/source/installation.rst b/docs/source/installation.rst
index a364e85b..ee6755af 100644
--- a/docs/source/installation.rst
+++ b/docs/source/installation.rst
@@ -46,7 +46,7 @@ As the package has been published on `PyPI <https://pypi.org/project/llnl-ssapy/
    pip install llnl-ssapy
 
 SSAPy's data (ephemerides, gravity models, textures) is installed with it
-from the ``llnl-ssapy-data`` package; no Git LFS is needed.
+from the split ``ssatk-data-*`` packages; no Git LFS is needed.
 
 Planetary ephemerides
 ^^^^^^^^^^^^^^^^^^^^^
diff --git a/skills.md b/skills.md
index 80843591..02c84f7d 100644
--- a/skills.md
+++ b/skills.md
@@ -10,7 +10,7 @@ installed from PyPI or cloned from GitHub.
 - GitHub repository: `https://github.com/LLNL/SSAPy`
 - Documentation: `https://software.llnl.gov/SSAPy/` or `https://LLNL.github.io/SSAPy/`
 - Companion toolkit: `ssapy-toolkit`, imported as `ssapy_toolkit`
-- Companion data package: `llnl-ssapy-data`, imported as `ssapy_data`
+- Companion data packages: `ssatk-data-*`, imported through their `ssapy_data_*` namespaces
 - Minimum Python version: Python 3.10
 
 ## Install and Import
@@ -46,7 +46,7 @@ coordinate transforms, sampling, and track association.
 
 Use `ssapy-toolkit` for higher-level workflows, plotting dashboards, convenience
 wrappers, brightness calculations, and reusable analysis utilities. New reusable
-datasets should generally live in `ssapy-data` rather than this repository.
+datasets should generally live in the appropriate split `ssatk-data-*` repository rather than this repository.
 
 SSAPy builds a compiled extension, `ssapy._ssapy`, through `scikit-build` and
 `CMakeLists.txt`. If an import fails immediately after cloning, install the
@@ -116,7 +116,7 @@ r, v = rv(orbit, times, propagator=KeplerianPropagator())
 ## Data and Binary Rules
 
 SSAPy's data (ephemerides, gravity models, textures) comes from the required
-`llnl-ssapy-data` package, under its `ssapy/` tree; the repository no longer
+split `ssatk-data-*` packages; the repository no longer
 stores data or uses Git LFS. Planetary ephemerides are handled by `ssapy.ephemeris`:
 DE440 (`de440s.bsp`, 1849-2150) by default and a 1900-2150 DE430 excerpt on
 request. Epochs outside those spans download the full-span kernel from NAIF
@@ -129,8 +129,8 @@ orientation files internally; prefer those public loaders over hard-coded paths.
 
 Avoid adding new large datasets, generated images, movies, notebooks with
 embedded outputs, archives, local shared libraries, or binary payloads to this
-repository. If new reusable data are needed, prefer adding them to SSAPy-Data
-and consuming them through a released `llnl-ssapy-data` wheel.
+repository. If new reusable data are needed, prefer adding them to the appropriate
+split `ssatk-data-*` repository and consuming its released wheel.
 
 Packaging should not include local compiled artifacts such as `_ssapy*.so` from
 developer builds. Generated build outputs belong outside the repository or in
@@ -188,7 +188,7 @@ python -m twine check dist/*
 
 ## Common Pitfalls
 
-- Do not add data files to this repository; add them to SSAPy-Data and release a new `llnl-ssapy-data`.
+- Do not add data files to this repository; add them to the appropriate split `ssatk-data-*` repository.
 - Do not add Git LFS as a default solution for new data in this repository.
 - Do not commit generated `_ssapy*.so`, `build/`, `dist/`, egg-info, docs build output, caches, or local environments.
 - Do not rely on unbuilt in-tree imports for code paths that require `ssapy._ssapy`.
diff --git a/ssapy/__init__.py b/ssapy/__init__.py
index 7d3384f0..43e93a7a 100644
--- a/ssapy/__init__.py
+++ b/ssapy/__init__.py
@@ -14,8 +14,8 @@ def _datadir():
             except (ImportError, TypeError):
                 continue
     except (ImportError, TypeError):
-        # llnl-ssapy-data is a required dependency; without it find_file
-        # raises a FileNotFoundError that says how to install it.
+        # Split data packages are optional at import time; find_file reports
+        # the missing package when a resource is requested.
         return os.path.join(os.path.dirname(__file__), "data")
 
 
diff --git a/ssapy/ephemeris.py b/ssapy/ephemeris.py
index ab5ec8b6..cf4a50ce 100644
--- a/ssapy/ephemeris.py
+++ b/ssapy/ephemeris.py
@@ -2,7 +2,7 @@
 Planetary ephemeris selection and long-span kernels.
 
 SSAPy evaluates Sun, Moon and planet positions from JPL development
-ephemerides (DE). ``llnl-ssapy-data`` ships two short kernels:
+ephemerides (DE). The split SSATK data packages ship the supported kernels:
 
 ========== ======================== =========================
 Ephemeris  Shipped kernel           Coverage
@@ -18,7 +18,7 @@
 For epochs outside the shipped kernel, SSAPy uses a longer kernel of the same
 ephemeris (``de440.bsp`` or ``de430.bsp``, 1550-2650) and, for DE440 beyond
 that, DE441 (-13200 to +17191). These are 120 MB to 1.65 GB, so they are not
-shipped: SSAPy looks for them in the working directory, ``llnl-ssapy-data``
+shipped: SSAPy looks for them in the working directory and split data packages
 and the cache directory, and otherwise downloads them from NAIF, checks their
 SHA-256, and caches them, warning with :class:`EphemerisDownloadWarning`
 before each download. Set ``SSAPY_EPHEMERIS_DOWNLOAD=0`` to forbid downloads
@@ -72,7 +72,7 @@ class Kernel:
     name: str
     start_jd: float  # TDB Julian dates covered by every segment SSAPy uses
     end_jd: float
-    sha256: Optional[str] = None  # None for kernels shipped in llnl-ssapy-data
+    sha256: Optional[str] = None  # None for kernels shipped in split data packages
     nbytes: Optional[int] = None
     solution: str = ""
 
@@ -194,7 +194,7 @@ def _path(kernel, reason):
         return path
     if kernel.sha256 is None:
         raise EphemerisUnavailableError(
-            f"{kernel.name} is missing; install 'llnl-ssapy-data>=0.2.0'."
+            f"{kernel.name} is missing; install the appropriate ssatk-data-* package."
         )
     destination = os.path.join(cache_dir(), kernel.name)
     manual = (f"Download {kernel.url} ({kernel.nbytes / 1e6:.0f} MB) into {cache_dir()} "
diff --git a/ssapy/utils.py b/ssapy/utils.py
index e58a4b5f..441272ae 100644
--- a/ssapy/utils.py
+++ b/ssapy/utils.py
@@ -64,12 +64,12 @@ def _ssapy_data_files():
 
 
 def find_file(filename, ext=None):
-    """ Find a file in the current directory or the ssapy datadir (the
-    ``ssapy/`` tree of the ``llnl-ssapy-data`` package).  If ext is not None,
+    """Find a file in the current directory or installed split data packages.
+    If ext is not None,
     also try appending ext to the filename.
 
     Git LFS pointer files (left over from SSAPy versions that stored data
-    with Git LFS) are skipped, and the rest of ``llnl-ssapy-data`` is searched
+    with Git LFS) are skipped, and installed split data packages are searched
     by file name.
     """
     names = [filename] if ext is None else [filename, filename + ext]
diff --git a/tests/test_accel.py b/tests/test_accel.py
index 33b19e22..746c18c3 100644
--- a/tests/test_accel.py
+++ b/tests/test_accel.py
@@ -19,7 +19,7 @@
 
 
 def _has_data(name):
-    # SSAPy's data comes from llnl-ssapy-data; skip only if it is missing.
+    # SSAPy's data comes from split SSATK data packages; skip only if missing.
     try:
         ssapy.utils.find_file(name)
         return True
@@ -151,7 +151,7 @@ def _make_body_dependent_objects():
     earth = moon = sun = earth_MG = moon_MG = sun_MG = None
 
 
-@pytest.mark.skipif(not HAS_EGM84, reason="EGM84 gravity file unavailable (llnl-ssapy-data not installed)")
+@pytest.mark.skipif(not HAS_EGM84, reason="EGM84 gravity file unavailable (split data package not installed)")
 @timer
 def test_MG_3_1():
     """Exercise 3.1 from Montenbruck and Gill
diff --git a/tests/test_data_file_lookup.py b/tests/test_data_file_lookup.py
index 1b353e12..211c1320 100644
--- a/tests/test_data_file_lookup.py
+++ b/tests/test_data_file_lookup.py
@@ -25,7 +25,7 @@ def test_lfs_pointer_is_not_returned_as_data(tmp_path, monkeypatch):
 
 def test_ssapy_data_is_searched_when_the_package_data_is_missing(tmp_path, monkeypatch):
     # With the package copy only a pointer, a real file of the same name
-    # shipped by llnl-ssapy-data is returned instead.
+    # shipped by a split SSATK data package is returned instead.
     local = tmp_path / "local"
     shipped = tmp_path / "shipped" / "ephemerides"
     local.mkdir()
diff --git a/tests/test_orbit.py b/tests/test_orbit.py
index c0b7c478..3c913525 100755
--- a/tests/test_orbit.py
+++ b/tests/test_orbit.py
@@ -20,7 +20,7 @@
 
 
 def _has_ephemeris():
-    # SSAPy's ephemeris comes from llnl-ssapy-data; skip only if it is missing.
+    # SSAPy's ephemeris comes from split SSATK data packages; skip only if missing.
     try:
         ssapy.body._planetary_ephemeris_path()
         return True
@@ -1570,7 +1570,7 @@ def test_light_time_correction():
         np.testing.assert_allclose(dircos, dc_linear, rtol=0, atol=1e-7)
         np.testing.assert_allclose(dircos, dc_exact, rtol=0, atol=1e-14)
 
-@pytest.mark.skipif(not _has_ephemeris(), reason="planetary ephemeris unavailable (llnl-ssapy-data not installed)")
+@pytest.mark.skipif(not _has_ephemeris(), reason="planetary ephemeris unavailable (split data package not installed)")
 @pytest.mark.timeout(90)
 @timer
 def test_find_passes():
diff --git a/tests/test_tle_drag.py b/tests/test_tle_drag.py
index 18e102ca..6f6f396b 100644
--- a/tests/test_tle_drag.py
+++ b/tests/test_tle_drag.py
@@ -16,9 +16,9 @@
 
 
 # The numerical drag propagator needs the gravity and ephemeris data from
-# llnl-ssapy-data; skip those tests if it is not installed.
+# split SSATK data packages; skip those tests if unavailable.
 def _has_data(name):
-    # SSAPy's data comes from llnl-ssapy-data; skip only if it is missing.
+    # SSAPy's data comes from split SSATK data packages; skip only if missing.
     try:
         ssapy.utils.find_file(name)
         return True
@@ -39,7 +39,7 @@ def _has_ephemeris():
 HAS_MOON_PA = _has_data("moon_pa_de440_200625.bpc")
 HAS_BODY_DATA = HAS_EGM84 and HAS_EPHEMERIS and HAS_MOON_PA
 needs_body_data = pytest.mark.skipif(
-    not HAS_BODY_DATA, reason="body data unavailable (llnl-ssapy-data not installed)")
+    not HAS_BODY_DATA, reason="body data unavailable (split data package not installed)")
 
 ISS = ("1 25544U 98067A   24015.54791435  .00016717  00000-0  30074-3 0  9993",
        "2 25544  51.6416 247.4627 0006703 130.5360 325.0288 15.49514637123456")

From aca844975bcfad3feb4dfb59bdff285ad62b9e4f Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 11:56:45 -0700
Subject: [PATCH 7/8] Cache split data resource discovery

---
 ssapy/utils.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ssapy/utils.py b/ssapy/utils.py
index 441272ae..6ed23952 100644
--- a/ssapy/utils.py
+++ b/ssapy/utils.py
@@ -6,6 +6,7 @@
 import re
 import numpy as np
 import warnings
+from functools import lru_cache
 from astropy.time import Time as _Time
 import astropy.units as u
 from typing import Union, Tuple
@@ -45,6 +46,7 @@ def _is_lfs_pointer(path):
         return False
 
 
+@lru_cache(maxsize=1)
 def _ssapy_data_files():
     """Return files shipped by installed split SSATK data packages."""
     from importlib.resources import files

From a38786629894e57fa6eabb02f3fc242ae0835fc7 Mon Sep 17 00:00:00 2001
From: Travis Yeager <SuperdoerTrav@gmail.com>
Date: Fri, 9 Oct 2026 12:23:19 -0700
Subject: [PATCH 8/8] Limit CI test parallelism on Linux

---
 .github/workflows/ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c0d56216..f543c4de 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -123,8 +123,8 @@ jobs:
     - name: Test with pytest
       if: matrix.os == 'ubuntu-latest'
       run: |
-        # Run pytest with coverage, using all available CPUs and verbose output
-        pytest -v -n auto --cov-report=xml --cov=ssapy --durations=20
+        # Limit xdist workers to avoid memory exhaustion on Linux runners.
+        pytest -v -n 2 --cov-report=xml --cov=ssapy --durations=20
     - name: Upload coverage reports to Codecov
       if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12'
       uses: codecov/codecov-action@v4