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bug#25221: Packages manager not working in WSL emacs-25 build

From: Angelo Graziosi
Subject: bug#25221: Packages manager not working in WSL emacs-25 build
Date: Sun, 18 Dec 2016 14:07:44 +0100
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1

I recently enabled and installed WSL (Windows Subsystem for Linux) in Windows 10 [1] and so tried to build Emacs.

Building Emacs master hangs [2]. So tried emacs-25 branch (+release and testing). This branch builds if one adopts the work around suggested in /et/PROBLEMS and from the WEB [3]:

echo 0 | sudo tee /proc/sys/kernel/randomize_va_space
./configure --prefix=/opt/emacs --without-x

It also seems to work but trying to install packages from MELPA/ELPA fails.

More precisely, in emacs25:

M-x package-list-packages

After the "Package refresh done" I cannot type anything nor I can quit (C-x C-c). If I do, for example pressing the down arrow key, in the packages buffer I see something like this

[1]+ Stopped emacs25ailable melpa No description available...
address@hidden   20151026.1233 available  melpa      play 2048 in Emacs..
$ 4clojure           20131014.1507 available  melpa..

At this point I can only try to kill Emacs. It is as if Emacs were reduced to background (C-z), and a 'fg' seems to resurrect it but is unusable (I have to close the WSL bash window).

Now, at the moment, enabling and installing WSL installs Ubuntu 14.04 and one can install other Ubuntu packages with apt-get. So I installed the emacs24-nox packages which works without this Packages manager issue!

Then for sanity check I did a build of emacs-24.3.tar.gz (the same version offered by WSL-Ubuntu) and it works as expected (also the packages Manager).

So the issue seems to regards only emacs-25 branch.


[1] https://msdn.microsoft.com/it-it/commandline/wsl/install_guide

[2] http://lists.gnu.org/archive/html/emacs-devel/2016-12/msg00427.html

[3] http://stackoverflow.com/questions/38905344/windows-bash-emacs-build-fail-memory-protection-enabled

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