[ci] Skip Playwright system deps install on subsequent self-hosted runs#92893
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On self-hosted runners, the system dependencies installed by playwright install --with-deps persist between runs. Use a stamp file (~/.cache/playwright-deps-installed) to skip the slow apt-get on subsequent runs, falling back to just downloading browser binaries if their version changed.
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Apr 16, 2026
This was referenced Apr 23, 2026
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What
Use a stamp file to skip
playwright install --with-depsafter the first successful run on a self-hosted runner.Why
--with-depsrunssudo apt-get installfor Playwright's system dependencies every time, even when they're already installed. On self-hosted runners this takes ~10s of no-opapt-getchecking. After the first install, subsequent runs only needplaywright install(which downloads browser binaries if the version changed, and is instant when cached).The assumption is that on most of the runners,
playwrightwill be the same version on each, and the deps that are installed are compatible within each version.Most of the time this step is ~3s, when everything is healthy and up-to-date.
Occasionally these steps will hiccup on builds when we're already really got these deps installed so this chops a little bit off each one. This also helps when APT mirrors go down.
How
playwright install --with-deps+ write~/.cache/playwright-deps-installedplaywright installwithout--with-deps