Create a linux-aarch64-only migrator

conda_forge_tick/make_migrators.py

@@ -35,7 +35,6 @@
 )
 from conda_forge_tick.migrators import (
     AddNVIDIATools,
-    ArchRebuild,
     CDTMigrator,
     CombineV1ConditionsMigrator,
     CondaForgeYAMLCleanup,
@@ -52,6 +51,7 @@
     Jinja2VarsCleanup,
     LibboostMigrator,
     LicenseMigrator,
+    LinuxAarch64,
     MigrationYaml,
     Migrator,
     MiniMigrator,
@@ -245,9 +245,9 @@ def add_arch_migrate(migrators: MutableSequence[Migrator], gx: nx.DiGraph) -> No
         The list of migrators to run.
 
     """
-    with fold_log_lines("making aarch64+ppc64le migrator"):
+    with fold_log_lines("making aarch64 migrator"):
         migrators.append(
-            ArchRebuild(
+            LinuxAarch64(
                 total_graph=gx,
                 pr_limit=PR_LIMIT,
             ),

conda_forge_tick/migrators/__init__.py

@@ -1,5 +1,5 @@
 # flake8: noqa
-from .arch import ArchRebuild, OSXArm, WinArm64
+from .arch import ArchRebuild, LinuxAarch64, OSXArm, WinArm64
 from .broken_rebuild import RebuildBroken
 from .conda_forge_yaml_cleanup import CondaForgeYAMLCleanup
 from .core import (

conda_forge_tick/migrators/arch.py

@@ -68,7 +68,11 @@ def _filter_stubby_and_ignored_nodes(graph, ignored_packages):
 
 
 class ArchRebuild(GraphMigrator):
-    """A Migrator that adds aarch64 and ppc64le builds to feedstocks."""
+    """
+    A Migrator that adds aarch64 and ppc64le builds to feedstocks.
+
+    Note: Superseded by subclass LinuxAarch64Rebuild to skip ppc64le.
+    """
 
     allowed_schema_versions = {0, 1}
     migrator_version = 1
@@ -86,6 +90,7 @@ class ArchRebuild(GraphMigrator):
         "linux_aarch64": "default",
         "linux_ppc64le": "default",
     }
+    list_filename = "arch_rebuild.txt"
 
     def __init__(
         self,
@@ -100,7 +105,7 @@ def __init__(
         if total_graph is not None:
             if target_packages is None:
                 # We are constraining the scope of this migrator
-                target_packages = load_target_packages("arch_rebuild.txt")
+                target_packages = load_target_packages(self.list_filename)
 
             outputs_lut = get_outputs_lut(total_graph, graph, effective_graph)
 
@@ -199,8 +204,8 @@ def pr_body(
         body = super().pr_body(feedstock_ctx)
         body = body.format(
             dedent(
-                """\
-        This feedstock is being rebuilt as part of the aarch64/ppc64le migration.
+                f"""\
+        This feedstock is being rebuilt as part of the {"/".join(list(self.arches))} migration.
 
         **Feel free to merge the PR if CI is all green, but please don't close it
         without reaching out the the ARM migrators first at <code>@</code>conda-forge/arm-arch.**
@@ -213,6 +218,23 @@ def remote_branch(self, feedstock_ctx: FeedstockContext) -> str:
         return super().remote_branch(feedstock_ctx) + "_arch"
 
 
+class LinuxAarch64(ArchRebuild):
+    """A migrator to add linux-aarch64 to a feedstock."""
+
+    arches = {"linux_aarch64": "default"}
+    list_filename = "linux-aarch64.txt"
+
+    def __init__(self, *args, **kwargs):
+        kwargs.setdefault("name", "linux aarch64 addition")
+        super().__init__(*args, **kwargs)
+
+    def pr_title(self, feedstock_ctx: FeedstockContext) -> str:
+        return "Linux Aarch64 Migrator"
+
+    def remote_branch(self, feedstock_ctx: FeedstockContext) -> str:
+        return super().remote_branch(feedstock_ctx) + "_linuxaarch64"
+
+
 class _CrossCompileRebuild(GraphMigrator):
     """A Migrator that adds arch platform builds to feedstocks."""
 

conda_forge_tick/models/pr_info.py

@@ -49,6 +49,7 @@ class MigratorName(StrEnum):
 
     VERSION = "Version"
     ARCH_REBUILD = "ArchRebuild"
+    LINUX_AARCH64 = "LinuxAarch64Rebuild"
     OSX_ARM = "OSXArm"
     WIN_ARM64 = "WinArm64"
     MIGRATION_YAML = "MigrationYaml"

conda_forge_tick/status_report.py

@@ -21,8 +21,8 @@
 from conda_forge_tick.lazy_json_backends import LazyJson, get_all_keys_for_hashmap
 from conda_forge_tick.make_migrators import load_migrators
 from conda_forge_tick.migrators import (
-    ArchRebuild,
     GraphMigrator,
+    LinuxAarch64,
     MatplotlibBase,
     MigrationYamlCreator,
     Migrator,
@@ -505,7 +505,7 @@ def main(migrator_filter: str | list[str] | None = None) -> None:
                     paused_status[migrator_name] = f"{migrator.name} Migration Status"
                 elif (
                     mgconf.get("longterm", False)
-                    or isinstance(migrator, ArchRebuild)
+                    or isinstance(migrator, LinuxAarch64)
                     or isinstance(migrator, OSXArm)
                     or isinstance(migrator, WinArm64)
                 ):

tests/test_migrator_to_json.py

@@ -222,12 +222,19 @@ def test_migrator_to_json_replacement():
     assert dumps(migrator2.to_lazy_json_data()) == lzj_data
 
 
-def test_migrator_to_json_arch():
+@pytest.mark.parametrize(
+    "MigratorCls,name",
+    (
+        [conda_forge_tick.migrators.ArchRebuild, "aarch64andppc64leaddition"],
+        [conda_forge_tick.migrators.LinuxAarch64, "linuxaarch64addition"],
+    ),
+)
+def test_migrator_to_json_arch(MigratorCls, name):
     gx = nx.DiGraph()
     gx.add_node("conda", reqs=["python"], payload={}, blah="foo")
     gx.graph["outputs_lut"] = {}
 
-    migrator = conda_forge_tick.migrators.ArchRebuild(
+    migrator = MigratorCls(
         target_packages=["python"],
         pr_limit=5,
         total_graph=gx,
@@ -238,14 +245,14 @@ def test_migrator_to_json_arch():
     lzj_data = dumps(data)
     print("lazy json data:\n", lzj_data)
     assert data["__migrator__"] is True
-    assert data["class"] == "ArchRebuild"
-    assert data["name"] == "aarch64andppc64leaddition"
+    assert data["class"] == MigratorCls.__name__
+    assert data["name"] == name
 
     migrator2 = make_from_lazy_json_data(loads(lzj_data))
     assert [pgm.__class__.__name__ for pgm in migrator2.piggy_back_migrations] == [
         pgm.__class__.__name__ for pgm in migrator.piggy_back_migrations
     ]
-    assert isinstance(migrator2, conda_forge_tick.migrators.ArchRebuild)
+    assert isinstance(migrator2, MigratorCls)
     assert dumps(migrator2.to_lazy_json_data()) == lzj_data