revert(build): drop 4.6.0 as a primary R version option #186
2026-08-31
revert(build): drop 4.6.0 as a primary R version option
#183 added it so the per-minor pass could run under 4.6. That was unnecessary: build-all-versions already loops every installed interpreter and runs build-all.R --sensitive-only for each non-primary minor, so the 4.6 pass happens when the pipeline runs with the slot's normal R_VERSION. Worse than unnecessary, it is a footgun. R_VERSION selects the *primary* minor, whose build lands in the generic slot. Choosing 4.6.0 for a slot whose generic binaries are 4.5-built would publish 4.6 binaries there and break every 4.5 client - the mirror image of the bug this all started with.