2026: project creation and OCIO support

[miravassor]

Flame 2026 removed Stone+Wire volumes and replaced SynColor with OCIO. Project creation was not possible.

Projects are now created directly under /projects on 2026.

The OCIO config path is passed to flame as OCIOConfigFile when the project is created. It comes from the OCIO env var, which core's OCIOEnvHook resolves.
→ subsequently, this PR is dependent to this ayon-core PR adding flame to OCIOEnvHook hosts.

SetupDir is dropped from the project settings on 2026. Flame resolves that path itself and rejects the write with "Setups folder is read only", which would abort the launch right after the project was created.

Setup needed

Application env for the flame 2026 variant:

{
    "FLAME_SCRIPT_DIRS": {"windows": "", "darwin": "", "linux": ""},
    "FLAME_WIRETAP_HOSTNAME": "",
    "FLAME_WIRETAP_VOLUME": "stonefs",
    "FLAME_WIRETAP_GROUP": "YOURDOMAIN\\Domain Users",
    "AYON_FLAME_PYTHON_EXEC": "/opt/Autodesk/python/2026.1.1/bin/python",
    "AYON_FLAME_PYTHONPATH": "/opt/Autodesk/python/2026.1.1/lib/python3.11/site-packages",
    "AYON_WIRETAP_TOOLS": "/opt/Autodesk/wiretap/tools/current"
}

You also need the usual Core > Color Management > OCIO config profile, with flame in its host names.

Worth knowing

Colour management is only applied when the project is created.
Tested on flame 2026.1.1, new and existing projects, plus a check that the SetupDir write really is rejected.

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Pull request overview

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Suppressed comments (1)

client/ayon_flame/hooks/pre_flame_setup.py:221

• RuntimeError("App arguments were not solved") is instantiated but never raised, so a missing/empty app_args will silently continue and likely fail later in a less clear way. This should be raise RuntimeError(...).

            output = run_subprocess(args, **process_kwargs)
            self.log.info("wiretap_com.py output:\n{}".format(output))