Mark more features as optional

[zamazan4ik]

What problem does this solve or what need does it fill?

I want to use bevy as an engine for backend part of my project. For now bevy requires a lot of useless dependencies for backend stuff like window features and others.

Describe the solution would you like?

Mark as much as possible features as optional. Then end user will be able to select and use only required features.

Describe the alternative(s) you've considered?

I don't see other solution for the problem.

Additional context

No

[smokku]

default-features = false is enough to run Bevy on backend server.

The simplest server I use on backend looks like:

    App::build()
        // minimal plugins necessary for timers + headless loop
        .add_plugin(bevy::type_registry::TypeRegistryPlugin::default())
        .add_plugin(bevy::core::CorePlugin)
        .add_plugin(ScheduleRunnerPlugin::run_loop(Duration::from_secs_f64(
            1.0 / 60.0,
        )))
        .run();

With Cargo.toml:

[dependencies]
bevy = { version ="*", default-features = false }

[zamazan4ik]

@smokku Does it require to install all deps from installation guide? Like sudo dnf install gcc-c++ libX11-devel alsa-lib-devel systemd-devel?

[smokku]

No. Turning off default features disables the whole render pipeline.

[smokku]

I just checked the dependencies of my server.

$ ldd target/debug/server
	linux-vdso.so.1 (0x00007ffca1de8000)
	libdl.so.2 => /lib64/libdl.so.2 (0x00007fb76aea7000)
	libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fb76ae85000)
	libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fb76ae6a000)
	libc.so.6 => /lib64/libc.so.6 (0x00007fb76aca0000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fb76b29d000)
	libm.so.6 => /lib64/libm.so.6 (0x00007fb76ab5a000)

[zamazan4ik]

Thanks for the help and your investigation! Now it's clear for me.