I can not currently find a way to set the CFFI variables correctly to
get it to load libraries from Nix.
In the absence of that feature, a wrapper also does the trick.
It's not enough to compile in the right order - turns out you also
have to load the compiled objects in the right order.
To achieve this some cursed code has been added that changes the Lisp
generated by Nix to compile the other Lisp so that it also generates
some bash, which Nix can then use to concatenate the FASLs in the
right order to feed them to Lisp again.
It works but I'll replace it with a more elegant solution once one is
needed.
Similar to buildGo.nix, the library derivations carry information
about their dependencies which is merged when a load file is
instantiated.
The load files are created when compiling libraries, but will in the
future also be created when wrapping SBCL and dumping images.
Adds a Nix function to build a Lisp library out of a specified set of
Nix files. All files are combined into a single FASL.
This is by design only compatible with SBCL (for now).
