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[9.4] [ML] Retry 3rd-party git clones and propagate clone failures (#3233) - #3235
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The Eigen and Valijson sources are cloned at CMake configure time from gitlab.com and github.com respectively. Those hosts occasionally return transient errors (e.g. GitLab "currently unable to handle this request due to load"), and a single failed clone was enough to break an entire CI build, requiring a manual rebuild. Wrap each clone in a bounded retry loop (5 attempts, increasing backoff) that starts from a clean slate on every attempt, so a brief hosting outage no longer fails the build. Also propagate the failure from the outer execute_process() calls that run these scripts. Previously the FATAL_ERROR raised inside the child `cmake -P` process was swallowed: configure logged the error but continued with an empty 3rd_party/eigen, so the failure only surfaced much later as a cryptic "Eigen/Core: No such file or directory" compile error. COMMAND_ERROR_IS_FATAL ANY makes configure stop immediately with the clear message once retries are exhausted, finally delivering the behaviour #3164 intended. (cherry picked from commit bcce4aa)
3 of 4 tasks
edsavage
enabled auto-merge (squash)
October 13, 2026 02:39
edsavage
disabled auto-merge
October 13, 2026 02:39
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