RcppCCTZ 0.2.14 on CRAN: New Upstream, Small Edits

Thu, 08 Jan 2026 10:42:00 CDT

A new release 0.2.14 of RcppCCTZ is now on CRAN, in Debian and built for r2u.

RcppCCTZ uses Rcpp to bring CCTZ to R. CCTZ is a C++ library for translating between absolute and civil times using the rules of a time zone. In fact, it is two libraries. One for dealing with civil time: human-readable dates and times, and one for converting between between absolute and civil times via time zones. And while CCTZ is made by Google(rs), it is not an official Google product. The RcppCCTZ page has a few usage examples and details. This package was the first CRAN package to use CCTZ; by now several others packages (four the last time we counted) include its sources too. Not ideal, but beyond our control.

This version updates to a new upstream release, and brings some small local edits. CRAN and R-devel were stumbled over us still mentioning C++11 in SystemRequirements (yes, this package is old enough for that to have mattered once). As that is a false positive—the package compiles well under any recent standard—we removed the mention. The key changes since the last CRAN release are summarised below.

Changes in version 0.2.14 (2026-01-08)

Synchronized with upstream CCTZ (Dirk in #46).

Explicitly enumerate files to be compiled in src/Makevars* (Dirk in #47)

Courtesy of my CRANberries, there is a diffstat report relative to to the previous version. More details are at the RcppCCTZ page; code, issue tickets etc at the GitHub repository.