How to add and run subPackages in Dub? - d

Question

Project/
dub.sdl/
source/
examples/
test/
source/
app.d
dub.sdl
Project/dub.sdl
...
subpackage "./examples/test"
...
Project/examples/test/dub.sdl
name "test"
targetType "executeable"
If I try to execute dub run test if get the following error
Failed to parse package description for test in Project/examples/test.
Failed to find a package named 'test'.
The same happens if I try to execute dub run :test.

Answer 1

In the command, you should prefix the subpackage name with the root package name.
dub run rootpackagename:test
It appears you need to specify run (or build or some other command) explicitly).

Answer 2

As of year 2017 with dub version 1.3.0: <rootpackagename> is optional. For example, I was testing jsoniopipe package as following:
# Add dependency which is not found on dub's repo:
git clone https://github.com/schveiguy/iopipe ../iopipe
dub add-local ../iopipe
dub.sdl file:
name "jsoniopipe"
description "JSON parser for iopipe"
authors "Steven Schveighoffer"
copyright "Copyright © 2017, Steven Schveighoffer"
license "boost"
targetType "library"
dependency "iopipe" version="*"
subPackage {
name "formatjson"
targetType "executable"
sourcePaths "examples/formatjson"
dependency "jsoniopipe" version="*"
}
Content of testjson.json
{
"name": "myproject",
"authors": [
"My Name"
],
"description": "My first project",
"copyright": "Copyright © 2017, imadev",
"license": "Boost"
}
Run command:
dub run :formatjson -- ./testjson.json