[Fab-user] RFC: using vellum build scripts as source of fabric tasks/environments

[Ronny Pfannschmidt]

Hi,

i worked with vellum and fabric and what they do in regard to "tasks"
looks similar so i made up an integration idea.

A translation of the "complex" example.

        def test():
            set(fab_hosts = ['localhost'])
        
        def staging():
            set(fab_hosts = ['n1.stg.python.org', 'n2.stg.python.org'])
        
        def production():
            set(fab_hosts = ['n1.python.org', 'n2.python.org'])
        
        def deploy():
            'Deploy the app to the target environment'
            local("make dist")
            put("bin/bundle.zip", "bundle.zip")
            sudo("./install.sh bundle.zip")

*could* look like the following in using vellum:

        options(
          name 'Test'
        )
        
        imports[
           module(from 'fabric.vellum')
        ]
        
        depends(
           deploy ['dist']
        )
        
        targets(
           test 
              set(fab_hosts ['localhost'])
           staging
              set(fab_hosts ['n1.stg.python.org' 'n2.stg.python.org'])
           production
              set(fab_hosts ['n1.python.org' 'n2.python.org'])
           
           dist $ make dist
           
           deploy [
                put(from 'bin/bundle.zip' to 'bundle.zip')
                sudo $./install.sh bundle.zip
           ]
        )

Im hoping for some comments before trying to make the tools suitable for that 
kind of integration.

Regards Ronny