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Victor Zverovich
fdf31252e6
Compilers are installed from third-party archives that periodically return 50x or throttle to a crawl, which fails the build. Keep the downloaded packages and restore them on the next run so that both apt and the legacy wget-based installs work from disk instead of refetching. apt, unlike apt-get, discards downloaded packages after installing them unless the binary-specific Keep-Downloaded-Packages is set. The cache is written once per key; bump the -v1 suffix to refresh it after the package versions change.