mes: Add a Mes-specific 'mes-0' module.

* mes/module/mes/mes-0.scm: New file.

Co-authored-by: Jan (janneke) Nieuwenhuizen <janneke@gnu.org>

mes/module/mes/mes-0.scm

@@ -0,0 +1,38 @@
+;;; -*-scheme-*-
+
+;;; GNU Mes --- Maxwell Equations of Software
+;;; Copyright © 2016,2018,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;;
+;;; mes-0.scm: This file is part of GNU Mes.
+;;;
+;;; GNU Mes is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Mes is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; mes-0.scm is the first file being loaded into Guile.  It provides
+;;; non-standard definitions that Mes modules and tests depend on.
+
+;;; Code:
+
+(define-module (mes mes-0)
+  #:re-export (mes?
+               guile?)
+  #:export (mes-use-module
+            guile-1.8?
+            guile-2?))
+
+(define-macro (mes-use-module . rest) #t)
+
+(define guile-1.8? #f)
+(define guile-2? #f)