Drop browser codec preloads from yt-dlp host - #10513
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Summary
Chromium-family browsers can inject browser-specific codec libraries into native messaging hosts through environment variables such as
LD_PRELOADandVIVALDI_PRELOADS.When
omarchy-chromium-ytdlp-hostinherits those variables, child processes such asyt-dlpandffmpeginherit them too. With Vivaldi's proprietary codec setup, this can make the systemffmpegload Vivaldi's bundledlibffmpeg.so, causing ffmpeg to crash and preventing yt-dlp from merging downloaded streams.This change clears the browser-only preload variables immediately when the native messaging host starts:
LD_PRELOADVIVALDI_PRELOADSThis keeps browser codec injection from leaking into yt-dlp, ffmpeg, or other helper processes spawned by the host.
Fixes #10469.
Testing
Added
test/shell.d/chromium-ytdlp-preload-test.shwhich starts the native host with fake values for both preload variables and verifies that neither remains in the host environment.Also verified the final change is limited to the native host and its focused regression test.