IntelliJ Plugin cannot get completion/DCD to work

[Damian Sobieralski]

I'm a 2 day noob to Mars D.  So far I'm really liking it. I've 
been using VisualD for work so far.  And that works great.  
However, there are times I am working on an Ubuntu machine and 
would like to have an IDE to use there.

I installed 
https://github.com/intellij-dlanguage/intellij-dlanguage via 
Intellij's "browse plugin" feature. All worked well.

I'm trying to get intellisense / completion to work.  I set up 
DCD as found:

https://github.com/dlang-community/DCD

I built via:

dub build --build=release --config=client --arch=x86_64
dub build --build=release --config=server --arch=x86_64

I created a ~/.config/dcd/dcd.conf that has:

/usr/include/dmd/druntime/import
/usr/include/dmd/phobos

in it

 From the command prompt I type dcd-server

2018-08-20T18:22:39.824:main.d:main:117 Starting up...
2018-08-20T18:22:39.824:server.d:loadConfiguredImportDirs:94 
Loading configuration from /home/XXX/.config/dcd/dcd.conf
2018-08-20T18:22:39.824:main.d:main:151 Listening at 
/run/user/1001/dcd.socket
2018-08-20T18:22:40.306:first.d:visit:497 Could not resolve 
location of module 'core/sys/netbsd/sys/mman'
2018-08-20T18:22:40.574:first.d:visit:418 Could not resolve 
location of module 'ldc/intrinsics'
2018-08-20T18:22:40.949:main.d:main:168 Import directories:
     /usr/include/dmd/druntime/import
     /usr/include/dmd/phobos
2018-08-20T18:22:40.949:main.d:main:174 114251 symbols cached.
2018-08-20T18:22:40.949:main.d:main:175 Startup completed in 1125 
milliseconds.

all seems good.

I ^C (quit) that and put the correct path in Intellij's DCD 
setting area for the dcd client and server.

But it never seems to work.  Whenever I tap control and space on 
a partial thing it says "D language: no completion found".

I am running:

DMD64 D Compiler v2.081.2
IntelliJ 2018.2.1 Community Edition
D Language Intellij Plugin 1.17.1

Any ideas where to start troubleshooting this?  It's so fun to 
work on Windows with VisualD and I'd really like to work on 
Ubuntu as well. I use Intellij for Java work so it'd be great if 
I could get this to work on Ubuntu.

Thanks!

- Damian