* guix/build/cmake-build-system.scm (%standard-phases): Use 'modify-phases' instead of alist-*. * guix/build/glib-or-gtk-build-system.scm (%standard-phases): Likewise. * guix/build/gnu-dist.scm (%dist-phases): Likewise. * guix/build/perl-build-system.scm (%standard-phases): Likewise. * guix/build/python-build-system.scm (%standard-phases): Likewise. * guix/build/ruby-build-system.scm (%standard-phases): Likewise. * guix/build/waf-build-system.scm (%standard-phases): Likewise.
* guix/build/gnu-dist.scm: New file. * Makefile.am (MODULES): Add it. * guix/build-system/gnu.scm (%default-modules): New variable. (gnu-build): Use it. (dist-package): New procedure.