fix: count site cores with the builder's resolution

scripts/generate_site.py

@@ -38,10 +38,9 @@ from common import (
     load_emulator_profiles,
     load_provenance_snapshots,
     parse_md5_list,
-    preferred_profile,
     require_yaml,
+    resolve_platform_cores,
     unique_emulator_profiles,
-    upstream_profile_index,
     write_if_changed as _write_artifact,
     yaml_load,
 )
@@ -2925,7 +2924,7 @@ def generate_gap_analysis(
 
 
 def _render_xref_by_platform(
-    coverages: dict, unique: dict, core_to_profile: dict
+    coverages: dict, unique: dict
 ) -> list[str]:
     """Which cores each platform pulls in, and what they need."""
     lines: list[str] = []
@@ -2944,25 +2943,13 @@ def _render_xref_by_platform(
         )
         lines.append("")
 
-        # Resolve which profiles this platform uses
+        # The cores the builder and verify resolve: a hand copy here dropped
-        if platform_cores == "all_libretro":
+        # the libretro set a list naming retroarch pulls in, and the system
+        # fallback EmuDeck relies on.
         matched = {
-                k: v for k, v in unique.items() if "libretro" in v.get("type", "")
+            key: unique[key]
-            }
+            for key in resolve_platform_cores(config, unique)
-        elif isinstance(platform_cores, list):
+            if key in unique
-            matched = {}
-            for cname in platform_cores:
-                cname_str = str(cname)
-                if cname_str in unique:
-                    matched[cname_str] = unique[cname_str]
-                elif cname_str in core_to_profile:
-                    pkey = core_to_profile[cname_str]
-                    matched[pkey] = unique[pkey]
-        else:
-            # Fallback: system intersection
-            psystems = set(config.get("systems", {}).keys())
-            matched = {
-                k: v for k, v in unique.items() if set(v.get("systems", [])) & psystems
         }
 
         if platform_cores == "all_libretro":
@@ -3027,7 +3014,7 @@ def _render_xref_by_platform(
 
 
 def _render_xref_by_upstream(
-    coverages: dict, unique: dict, core_to_profile: dict
+    coverages: dict, unique: dict
 ) -> list[str]:
     """The same relation read the other way: one row per upstream."""
     lines: list[str] = []
@@ -3052,20 +3039,8 @@ def _render_xref_by_upstream(
     # Build platform membership per core
     platform_membership: dict[str, set[str]] = {}
     for pname, cov in coverages.items():
-        config = cov["config"]
+        for key in resolve_platform_cores(cov["config"], unique):
-        pcores = config.get("cores", [])
+            platform_membership.setdefault(key, set()).add(pname)
-        if pcores == "all_libretro":
-            for k, v in unique.items():
-                if "libretro" in v.get("type", ""):
-                    platform_membership.setdefault(k, set()).add(pname)
-        elif isinstance(pcores, list):
-            for cname in pcores:
-                cname_str = str(cname)
-                if cname_str in unique:
-                    platform_membership.setdefault(cname_str, set()).add(pname)
-                elif cname_str in core_to_profile:
-                    pkey = core_to_profile[cname_str]
-                    platform_membership.setdefault(pkey, set()).add(pname)
 
     for upstream_url in sorted(by_upstream.keys()):
         cores = by_upstream[upstream_url]
@@ -3102,12 +3077,6 @@ def generate_cross_reference(
         k: v for k, v in profiles.items() if v.get("type") not in ("alias", "test")
     }
 
-    # Core name -> the profile it designates, the rule target filtering uses.
-    index = upstream_profile_index(unique)
-    core_to_profile: dict[str, str] = {
-        core: preferred_profile(index, core) for core in index
-    }
-
     total_cores = len(unique)
     total_upstreams = len({
         p.get("upstream", p.get("source", ""))
@@ -3131,8 +3100,8 @@ def generate_cross_reference(
         "",
     ]
 
-    lines.extend(_render_xref_by_platform(coverages, unique, core_to_profile))
+    lines.extend(_render_xref_by_platform(coverages, unique))
-    lines.extend(_render_xref_by_upstream(coverages, unique, core_to_profile))
+    lines.extend(_render_xref_by_upstream(coverages, unique))
 
     lines.extend(["", f"*Generated on {_timestamp()}*"])
     return "\n".join(lines) + "\n"

tests/test_site_cores.py

@@ -0,0 +1,48 @@
+"""The site counts a platform's cores the way the builder resolves them.
+
+The cross-reference page re-implemented the resolution and dropped the
+libretro set a cores: list naming retroarch pulls in: RetroDECK read 20 cores
+where its pack is built from 321.
+"""
+
+from __future__ import annotations
+
+import re
+import sys
+import unittest
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(REPO_ROOT / "scripts"))
+
+import generate_site  # noqa: E402
+from common import (  # noqa: E402
+    list_registered_platforms,
+    load_emulator_profiles,
+    load_platform_config,
+    resolve_platform_cores,
+)
+
+
+class SiteCoreCounts(unittest.TestCase):
+    def test_each_platform_count_is_the_resolved_set(self):
+        platforms = str(REPO_ROOT / "platforms")
+        profiles = load_emulator_profiles(str(REPO_ROOT / "emulators"))
+        unique = {k: v for k, v in profiles.items() if v.get("type") not in ("alias", "test")}
+        coverages = {}
+        for name in list_registered_platforms(platforms, include_archived=True):
+            config = load_platform_config(name, platforms)
+            coverages[name] = {"platform": config.get("platform", name), "config": config}
+        page = generate_site.generate_cross_reference(coverages, profiles)
+        shown = {
+            m.group(1): int(m.group(2))
+            for m in re.finditer(r'\?\?\? abstract "([^"]+)"\n\n.*\n\n {4}\*\*(\d+) cores', page)
+        }
+        for name, cov in coverages.items():
+            with self.subTest(platform=name):
+                expected = len(resolve_platform_cores(cov["config"], unique))
+                self.assertEqual(shown[cov["platform"]], expected)
+
+
+if __name__ == "__main__":
+    unittest.main()