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A general description is here.
‘system()’ and related functions sometimes failed when run in ‘Rgui’.
‘R CMD check’ on a multi-architecture installation now skips the user's ‘.Renviron’ file for the architecture-specific tests (which do read the architecture-specific ‘Renviron.site’ files). This is consistent with single-architecture checks, which use ‘--no-environ’.
‘R CMD build’ now looks for ‘DESCRIPTION’ fields ‘BuildResaveData’ and ‘BuildKeepEmpty’ for per-package overrides. See ‘Writing R Extensions’.
‘R CMD check’ on a multi-architecture installation now skips the user's
‘.Renviron’ file for the architecture-specific tests (which do read the
architecture-specific ‘Renviron.site’ files). This is consistent with
single-architecture checks, which use ‘--no-environ’.