GNU bug report logs - #42259
emacs-ess 18.10.2 sets R_HOME to a ridiculous value by default

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Message #10 received at 42259-done <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Kyle Andrews <kyle.c.andrews <at> gmail.com>
Cc: 42259-done <at> debbugs.gnu.org
Subject: Re: bug#42259: emacs-ess 18.10.2 sets R_HOME to a ridiculous value
 by default
Date: Sun, 27 Sep 2020 23:29:44 -0400

Hello,

Kyle Andrews <kyle.c.andrews <at> gmail.com> writes:

> I have been noticing many warnings coming from R in several contexts
> saying:
>
>   WARNING: ignoring environment value of R_HOME
>
> See for example the output of running:
>
>   $ R --version
>
> This warning appears to be coming from line 69 of ess-r-gui.el where an
> unset environment variable R_HOME is being set in elisp code which is
> pointing to some ancient version of R located inside a Microsoft Windows
> file system:
>
> R_HOME="c:/progra~1/R/R-2.6.1"
>
> This whole ess-r-gui.el file seems to be dedicated to interfacing with
> software in Microsoft Windows which doesn't seem at all relevant in the
> Guix world. This whole file can probably be safely deleted along with
> line 164 in the ESS/lisp/Makefile which I think triggers byte
> compilation.

This should be fixed in commit 0939462e3f81bc98b38bdb7610e6a80ca1cbaa1b.

Closing.  Thanks for the report!

Maxim

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