How to configure D autocompletion in Vim?

[p.shkadzko]

On Thursday, 26 December 2019 at 18:59:16 UTC, user7892 wrote:
>
> do you get something after
>
>     `void main(){ int.`
>
> ?. This invokes builtin completions but generally DCD needs to 
> know a few root paths to D libraries. So if the sample I give 
> you works then you must certainly configure dcd so that it 
> knows phobos sources path and druntime sources path.

No, I am not getting any response from Vim after typing "int." 
inside main(){}. I tested dcd-server in console and it works as 
expected:

$ echo | dcd-client --search toImpl
/usr/include/dlang/dmd/std/conv.d	f	55647
/usr/include/dlang/dmd/std/conv.d	f	54285
/usr/include/dlang/dmd/std/conv.d	f	52624
/usr/include/dlang/dmd/std/conv.d	f	52314
/usr/include/dlang/dmd/std/conv.d	f	45257
/usr/include/dlang/dmd/std/conv.d	f	43253
/usr/include/dlang/dmd/std/conv.d	f	39946
/usr/include/dlang/dmd/std/conv.d	f	37388
/usr/include/dlang/dmd/std/conv.d	f	29814
/usr/include/dlang/dmd/std/conv.d	f	25478
/usr/include/dlang/dmd/std/conv.d	f	21394
/usr/include/dlang/dmd/std/conv.d	f	19900
/usr/include/dlang/dmd/std/conv.d	f	19137
/usr/include/dlang/dmd/std/conv.d	f	18129
/usr/include/dlang/dmd/std/conv.d	f	17787
/usr/include/dlang/dmd/std/conv.d	f	14365

dcd-server response

2019-12-26T21:07:55.997 [info] main.d:130:runServer Starting up...
2019-12-26T21:07:55.997 [info] 
server.d:94:loadConfiguredImportDirs Loading configuration from 
/etc/dcd.conf
2019-12-26T21:07:55.997 [info] main.d:157:runServer Cleaning up 
old socket file at /run/user/1000/dcd.socket
2019-12-26T21:07:55.998 [info] main.d:164:runServer Listening at 
/run/user/1000/dcd.socket
2019-12-26T21:07:55.998 [info] main.d:181:runServer Import 
directories:
     /usr/include/dlang/dmd
2019-12-26T21:07:55.998 [info] main.d:187:runServer 0 symbols 
cached.
2019-12-26T21:07:55.998 [info] main.d:188:runServer Startup 
completed in 0 milliseconds.
2019-12-26T21:16:20.015 [warning] first.d:459:visit Could not 
resolve location of module 'ldc/intrinsics'
2019-12-26T21:16:20.225 [warning] first.d:459:visit Could not 
resolve location of module 'core/sys/openbsd/sys/cdefs'
2019-12-26T21:16:20.310 [warning] first.d:459:visit Could not 
resolve location of module 'gcc/builtins'
2019-12-26T21:16:20.314 [warning] first.d:459:visit Could not 
resolve location of module 'gcc/builtins'
2019-12-26T21:16:20.334 [warning] first.d:459:visit Could not 
resolve location of module 'core/sys/netbsd/execinfo'
2019-12-26T21:16:20.546 [warning] first.d:459:visit Could not 
resolve location of module 'core/sys/openbsd/sys/cdefs'
2019-12-26T21:16:20.903 [info] main.d:302:runServer Request 
processed in 1250 milliseconds