Local library with dub

[JG]

On Tuesday, 20 April 2021 at 18:11:18 UTC, Andre Pany wrote:
> On Tuesday, 20 April 2021 at 17:15:15 UTC, JG wrote:
>> Hi
>>
>> I want to put some code together in a local library that is 
>> then used by several other projects. I am running into a few 
>> problems. Firstly when I try and configure the code to be a 
>> library (dub init, add d files to source, and remove 
>> source/app.d - perhaps this wrong) dub test no longer seems to 
>> work?
>>
>> Secondly I am having problems getting dub to add the library 
>> code to other projects. It seems to work if I run dub 
>> add-local path/to/library and then add the appropriate 
>> dependencies to the projects dub.json file. However, I didn't 
>> manage to find documentation that explains exactly how this 
>> should work. Also there seems to be some mention getting this 
>> to work with versions (in the documentation about dub 
>> add-path), which I couldn't follow.
>>
>> Does anyone know in more detail how this works or how I can 
>> find out?
>
> You need to add 2 configurations. The first configuration is 
> used automatically when you execute `dub build`. Just name the 
> config `debug` with targetType `library`. Add a second 
> configuration with name `unittest` and targetType `executable` 
> and attribute `mainSourceFile` pointing to a module containing 
> your main function for your test. For example name this module 
> `testapp.d`.
> The module `testapp.d` you need to exclude in your 
> configuration `debug` using attribute `excludeSourceFiles`.
>
> The configuration `unittest` is automatically used when you 
> execute `dub test`.
>
> Kind regards
> Andre

Thank you very much. In case someone wants more specific 
instructions:
(a) add a file source/test.d containing:
void main(){}
(b) add configurations to dub.json:
"configurations": [
          { "name": "debug",
            "excludedSourceFiles": ["source/test.d"],
            "targetType": "library"},
          { "name": "unittest",
            "mainSourceFile": "source/test.d",
            "targetType": "executable"}]

This still leaves open the question of how to include a version 
of such a library in another project via dub.