gnu: bash: Do not retain dependency on Coreutils.

Previously the "include" output of BASH-FINAL would refer to
'bootstrap-binaries' via 'Makefile.inc'.

* gnu/packages/bash.scm (bash)[arguments]: In 'move-development-files'
phase, remove absolute file name of 'install' from the 'INSTALL'
variable in 'Makefile.inc'.
* gnu/packages/commencement.scm (bash-final)[arguments]: Pass
 #:disallowed-references.

gnu/packages/bash.scm

@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2015, 2017 Leo Famulari <leo@famulari.name>
 ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
@@ -171,6 +171,13 @@ number/base32-hash tuples, directly usable in the 'patch-series' form."
                 (rename-file (string-append out "/lib/pkgconfig")
                              (string-append include
                                             "/lib/pkgconfig"))
+
+                ;; Don't capture the absolute file name of 'install' to avoid
+                ;; retaining a dependency on Coreutils.
+                (substitute* (string-append (lib include)
+                                            "/Makefile.inc")
+                  (("^INSTALL =.*")
+                   "INSTALL = install -c\n"))
                 #t))))))
 
      (native-search-paths

gnu/packages/commencement.scm

@@ -800,12 +800,17 @@ exec ~a/bin/~a-~a -B~a/lib -Wl,-dynamic-linker -Wl,~a/~a \"$@\"~%"
 (define bash-final
   ;; Link with `-static-libgcc' to make sure we don't retain a reference
   ;; to the bootstrap GCC.
-  ;; FIXME: This depends on 'bootstrap-binaries' via Makefile.in.
-  (package-with-bootstrap-guile
-   (package-with-explicit-inputs (static-libgcc-package bash)
-                                 %boot3-inputs
-                                 (current-source-location)
-                                 #:guile %bootstrap-guile)))
+  (let ((bash (package
+                (inherit bash)
+                (arguments
+                 `(#:disallowed-references
+                   ,(assoc-ref %boot3-inputs "coreutils&co")
+                   ,@(package-arguments bash))))))
+    (package-with-bootstrap-guile
+     (package-with-explicit-inputs (static-libgcc-package bash)
+                                   %boot3-inputs
+                                   (current-source-location)
+                                   #:guile %bootstrap-guile))))
 
 (define %boot4-inputs
   ;; Now use the final Bash.