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fix: detect Batocera and Knulli by build files

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No Batocera build writes /etc/batocera-version: batocera-system.mk:21-22
(batocera.linux 38845725, unchanged since batocera-30) writes
/usr/share/batocera/batocera.version. Knulli (knulli-linux 57afa662) adds
OS_NAME=knulli to os-release, writes /usr/share/knulli/knulli.version and
removes /usr/share/batocera, and no Knulli source writes /etc/knulli-release.
Neither was detected. A Knulli board is named and not narrowed by
Batocera's per-board lists, and an unlisted board is named.
This commit is contained in:
Abdessamad Derraz committed 2026-10-21 05:44:27 +02:00
1 parent edda080c59
commit 89c533e9ba
6 files changed
+102 -15
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wiki/installer.md
+6 -3
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@@ -279,9 +279,9 @@ wins, since a machine is only one of them.
| Evidence | Platform | BIOS directory |
|----------|----------|----------------|
| `/etc/os-release` `OS_NAME=ROCKNIX` (or `ID=rocknix` on images before 2025) | ROCKNIX | `/storage/roms/bios` |
| `/etc/knulli-release` | Batocera | `/userdata/bios` |
| `/etc/os-release` `OS_NAME=knulli` or `/usr/share/knulli/knulli.version` | Batocera (Knulli) | `/userdata/bios` |
| `/etc/os-release` `ID=lakka` | Lakka | `/storage/system` |
| `/etc/batocera-version` | Batocera | `/userdata/bios` |
| `/usr/share/batocera/batocera.version` | Batocera | `/userdata/bios` |
| `/recalbox/recalbox.version` or `/usr/bin/recalbox-settings` | Recalbox | `/recalbox/share/bios` |
| `/opt/muos` | RetroArch (muOS) | `system_directory` of `/opt/muos/share/info/config/retroarch.cfg`, else of the default it is copied from: `/run/muos/storage/bios`, which muOS binds to `MUOS/bios` on the second card when that card holds one, else the first. Cores are read from that config's `libretro_directory` (`/opt/muos/share/core`) |
| `/mnt/mmc/MUOS/` | RetroArch | `/mnt/mmc/MUOS/bios` |
@@ -290,7 +290,10 @@ wins, since a machine is only one of them.
Batocera, Recalbox, ROCKNIX and Lakka also name the board they were built for, and
that board narrows the install unless `--target` or `--every-board` says
otherwise (see the options above).
otherwise (see the options above). A board with no core list of its own is
named and gets the files of every board. Knulli names its board in
`/usr/share/knulli/knulli.arch` but builds its own set of cores, so Batocera's
per-board lists are not applied to it and the run says so.
Some platforms keep their BIOS in a fixed directory, and that directory is the
evidence. They are looked for after the configurations below, for a platform