fix: send retropie users to the retropie pack

scripts/generate_site.py

@@ -3463,7 +3463,7 @@ open them depends on their name:
 
 | Setup | What it is | Pack | Extract to |
 |-------|-----------|------|-----------|
-| [RetroPie](https://retropie.org.uk/) | The classic Pi emulation setup, largest community, most online guides | [RetroArch]({rel}) | `~/RetroPie/BIOS/` |
+| [RetroPie](https://retropie.org.uk/) | The classic Pi emulation setup, largest community, most online guides | [RetroPie]({rel}) | `~/RetroPie/BIOS/` |
 | [Lakka](https://www.lakka.tv/) | Lightweight RetroArch OS, minimal config, boots straight into the UI | [RetroArch]({rel}) | `/storage/system/` |
 | [Batocera](https://batocera.org/) | Easy setup, works on Pi 3/4/5 and many other boards (Odroid, etc.) | [Batocera]({rel}) | `/userdata/bios/` |
 | [Recalbox](https://www.recalbox.com/) | Plug-and-play experience, good for a first build | [Recalbox]({rel}) | `/recalbox/share/bios/` |

tests/test_which_pack.py

@@ -0,0 +1,50 @@
+"""The "which pack" table sends each platform to the pack built for it.
+
+RetroPie's row linked the RetroArch pack, although a RetroPie pack is
+published and carries 3916 files the RetroArch one does not.
+"""
+
+from __future__ import annotations
+
+import re
+import sys
+import unittest
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(REPO_ROOT / "scripts"))
+
+
+class WhichPackRows(unittest.TestCase):
+    def test_platform_rows_name_their_own_pack(self):
+        from common import (
+            group_identical_platforms,
+            list_registered_platforms,
+            load_platform_config,
+        )
+
+        platforms_dir = str(REPO_ROOT / "platforms")
+        registered = list_registered_platforms(platforms_dir, include_archived=True)
+        display = {
+            p: load_platform_config(p, platforms_dir).get("platform", p)
+            for p in registered
+        }
+        packs_of: dict[str, set[str]] = {}
+        for group, _rep in group_identical_platforms(registered, platforms_dir):
+            names = {display[p] for p in group}
+            for p in group:
+                packs_of[display[p]] = names
+        source = (REPO_ROOT / "scripts" / "generate_site.py").read_text(encoding="utf-8")
+        row = re.compile(r"^\| \[([^\]]+)\]\([^)]*\) \|[^|]*\| \[([^\]]+)\]\(\{rel\}\)", re.M)
+        checked = 0
+        for setup, pack in row.findall(source):
+            if setup not in packs_of:
+                continue
+            checked += 1
+            with self.subTest(setup=setup):
+                self.assertIn(pack, packs_of[setup])
+        self.assertGreater(checked, 5)
+
+
+if __name__ == "__main__":
+    unittest.main()