Enable asdf directives even if --load-system is not used.

[dangerousben]

This allows the directives to be used even if asdf is invoked by other
means.

[xach]

Thanks. Can you give me an example of when this is needed?

[dangerousben]

I'm experimenting with using buildapp to build stumpwm. Typically quicklisp is used to install the dependencies, while stumpwm itself is cloned from git and asdf-loaded via this file: https://github.com/dangerousben/stumpwm/blob/buildapp/load-stumpwm.lisp.in#L28-33 (with @STUMPWM_ASDF_DIR@ set by configure).

My ql/ba based build process looks something like:

• install dependencies via ql (currently manually but could be automated)
• write ql manifest file
• buildapp --output stumpwm --manifest-file quicklisp-manifest.txt --load load-stumpwm.lisp --entry stumpwm:stumpwm-cli

The point being that I can't simply use --load-system because stumpwm is not in the manifest file. Hope that makes sense, sorry for the verbosity.

[xach]

In the interim, you can always add --require asdf to your command line.