nonguix: Use the install-plan of the copy-build-system in the binary-build-system.

* nonguix/build-system/binary.scm (lower): Adapt the default value of the
  install plan.
* nonguix/build/binary-build-system.scm (new-install): New procedure.
(old-install): Rename former `install' procedure to this.
(install): New procedure that dispatches over old-install and new-install.

nonguix/build-system/binary.scm

@@ -23,6 +23,7 @@
   #:use-module (guix search-paths)
   #:use-module (guix build-system)
   #:use-module (guix build-system gnu)
+  #:use-module (guix build-system copy)
   #:use-module (guix packages)
   #:use-module (ice-9 match)
   #:use-module (srfi srfi-1)
@@ -37,7 +38,7 @@
 ;; Commentary:
 ;;
 ;; Standard build procedure for binary packages.  This is implemented as an
-;; extension of `gnu-build-system'.
+;; extension of `copy-build-system'.
 ;;
 ;; Code:
 
@@ -45,7 +46,7 @@
   ;; Build-side modules imported by default.
   `((nonguix build binary-build-system)
     (nonguix build utils)
-    ,@%gnu-build-system-modules))
+    ,@%copy-build-system-modules))
 
 (define (default-patchelf)
   "Return the default patchelf package."
@@ -78,7 +79,6 @@
                               `(("source" ,source))
                               '())
                         ,@inputs
-
                         ;; Keep the standard inputs of 'gnu-build-system'.
                         ,@(standard-packages)))
          (build-inputs `(("patchelf" ,patchelf)
@@ -94,7 +94,7 @@
                        #:key (guile #f)
                        (outputs '("out"))
                        (patchelf-plan ''())
-                       (install-plan ''(("." (".") "./")))
+                       (install-plan ''(("." "./")))
                        (search-paths '())
                        (out-of-source? #t)
                        (validate-runpath? #t)

nonguix/build/binary-build-system.scm

@@ -30,7 +30,11 @@
 ;;
 ;; Code:
 
-(define* (install #:key install-plan outputs #:allow-other-keys)
+(define (new-install)
+  "Return the copy-build-system `install' procedure."
+  (@@ (guix build copy-build-system) install))
+
+(define* (old-install #:key install-plan outputs #:allow-other-keys)
   "Copy files from the \"source\" build input to the \"out\" output according to INSTALL-PLAN.
 
 An INSTALL-PLAN is made of three elements:
@@ -70,6 +74,18 @@ represent the target full path, which only makes sense for single files."
   (for-each install install-plan)
   #t)
 
+(define* (install #:key install-plan outputs #:allow-other-keys)
+  (define (install-old-format)
+     (warn "Install-plan format deprecated.
+Please update to the format of the copy-build-system.")
+     (old-install #:install-plan install-plan #:outputs outputs))
+  (match (car install-plan)
+    ((source (. matches) target)
+     (install-old-format))
+    ((source #f target)
+     (install-old-format))
+    (_ ((new-install) #:install-plan install-plan #:outputs outputs))))
+
 (define* (patchelf #:key inputs outputs patchelf-plan #:allow-other-keys)
   "Set the interpreter and the RPATH of files as per the PATCHELF-PLAN.