* guix/build/guile-build-system.scm (build): Add #:not-compiled-file-regexp and honor it. * guix/build-system/guile.scm (guile-build): Likewise. (guile-cross-build): Likewise.
* guix/build-system/guile.scm, guix/build/guile-build-system.scm: New files. * Makefile.am (MODULES): Add them. * doc/guix.texi (Build Systems): Document 'guile-build-system'.