[Rd] Sys.timezone() fails on Linux under Microsoft WSL

Brenton Wiernik brenton @end|ng |rom w|ern|k@org
Tue Apr 13 15:15:50 CEST 2021

In Microsoft’s Windows Subsystem for Linux (WSL or WSL2), there is not system framework, so utilities that depend on it fail. This includes timedatectl which R uses in Sys.timezone(). The timedatectl utility is present on Linux systems installed under WSL/WSL2, but is non-functional. So, when Sys.timezone() checks for Sys.which("timedatectl"), it receives a false positive. The subsequent methods after this if () do work, however.

This can be fixed if line 42 of Sys.timezone() were changed from:
if (nzchar(Sys.which("timedatectl"))) {

if (nzchar(Sys.which("timedatectl")) && !grepl("microsoft", system("uname -r", intern = TRUE), ignore.case = TRUE)) {

"uname -r" returns for example:

So checking for "microsoft" or "WSL" would probably work.

Brenton Wiernik

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