Sys.timezone() fails on Linux under Microsoft WSL
One way to avoid the call to timedatectl is to set the `TZ` environment variable on your machine to your local timezone, if this is set `Sys.timezone()` uses this and does not try to query timedatectl for the timezone. This is a common issue as well in docker containers, as like on WSL in docker timedatectl is present, but non-functional. Jim
On Tue, Apr 13, 2021 at 9:19 AM Brenton Wiernik <brenton at wiernik.org> wrote:
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"))) {
to:
if (nzchar(Sys.which("timedatectl")) && !grepl("microsoft", system("uname
-r", intern = TRUE), ignore.case = TRUE)) {
"uname -r" returns for example:
"5.4.72-microsoft-standard-WSL2"
So checking for "microsoft" or "WSL" would probably work.
Brenton Wiernik
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