feat(build): allow the per-minor pass to run under R 4.6 #183
2026-08-31
feat(build): allow the per-minor pass to run under R 4.6
The supported window is the latest R minor plus the two previous, which the build images install as R_VERSION_LATEST/PREV1/PREV2 (4.6.0, 4.5.3, 4.4.3). R_VERSION here offered only the latter two, so no pipeline could run local/build-all.R --sensitive-only under 4.6 and its per-minor slots kept a backlog. That backlog is the live bug: rlang is built for 4.4 and 4.5 on amd64/resolute but never for 4.6, so an R 4.6.1 client is served the generic 4.5.3 binary and dies with 'undefined symbol: SETLENGTH'. weekly-rebuild-missing cannot close it - its audit reads only the generic index and rebuild-missing.R targets only the flat slot - so this is the pipeline that has to grow the option.