This package has a Depends or Build-Depends on SDL version 1.2, which
is unmaintained upstream.

If possible, please port this package to SDL 2 and close this bug. There
is a migration guide at <https://wiki.libsdl.org/SDL2/MigrationGuide>,
and examples of successful ports from SDL 1.2 to SDL 2 can be found in
the commit history of packages like darkplaces and ioquake3.

If it is not possible to port to SDL 2, please test the package with
libsdl1.2-compat-shim (preferably version 1.2.64 or later), and leave
this bug open to track the package as still using SDL 1.2 APIs.

libsdl1.2-compat-shim is a compatibility layer that provides the SDL 1.2
API/ABI by using SDL 2: it has already replaced the "classic" SDL 1.2
library in some other distributions like Fedora and Arch, and my intention
is to do the same in Debian during the trixie release cycle.

It is *not* necessary to change dependencies from libsdl1.2debian to
libsdl1.2-compat-shim, or from libsdl1.2-dev to libsdl1.2-compat-dev.
My intention is to make a future version of sdl12-compat take over
the old package names, to minimize the changes that are required in
dependent packages.

The interesting scenarios to test with libsdl1.2-compat-shim are:

1. Install libsdl1.2-compat-shim and run the program in an X11 environment,
   such as "GNOME on Xorg" or XFCE.
   ($XDG_RUNTIME_DIR/wayland-* should not exist)
2. Install libsdl1.2-compat-shim and run the program in a Wayland
   environment such as GNOME's default mode, using Xwayland.
   ($XDG_RUNTIME_DIR/wayland-* should exist)
3. Install libsdl1.2-compat-shim and run the program in a Wayland
   environment, but this time with environment variable
   SDL_VIDEODRIVER=wayland so that it uses the native Wayland interface
   (this is not currently the default for SDL 2).
4. Install libsdl1.2-compat-dev and recompile the package.

Note that using libsdl1.2-compat and LD_LIBRARY_PATH is not sufficient if
the package contains programs that are setgid games. See
<https://github.com/libsdl-org/sdl12-compat/blob/main/HOW_TO_TEST_GAMES.md>
for more information.

If any of those fail, please report it as a bug in the
libsdl1.2-compat-shim or libsdl1.2-compat-dev package as appropriate,
with "affects" pointing to the program that is affected.

Thanks,
    smcv

Simon McVittie <smcv@debian.org> wrote:

Sorry to have not acknowledged this a while back. I am working on it.

The hardest part of porting Chroma to SDL 2 is its fullscreen and
window-sizing logic, which was complicated already, and for which SDL 2
has profoundly changed the APIs. But that is also an area of the Chroma
code with at least one known bug (#1023770), so I'm thinking that a full
rewrite of that section - especially one that simplifies it rather than
making it more complicated - is probably a good thing anyway.

I hope to be in a position shortly to send a draft patch along these
lines upstream and see what they think about it.

Cheers,
Simon

That's great to hear. Please don't think of this as *particularly*
urgent: as long as chroma works OK with libsdl1.2-compat-shim (it
seemed OK when I did some brief testing) and compiles successfully with
libsdl1.2-compat-dev (it does), it isn't going to block #1039911.

    smcv

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