packages: Mark the `arguments' field of <package> as thunked.

* guix/packages.scm (<package>): Mark `arguments' as thunked.
  (package-derivation): Adjust accordingly.  Parameterize
  %CURRENT-SYSTEM to SYSTEM, so that arguments can refer to it.

* guix/build-system/gnu.scm (package-with-explicit-inputs): Expect
  `package-arguments' to always return a list, and return a list.
  (package-with-extra-configure-variable): Likewise.
  (static-package): Likewise.
* gnu/packages/base.scm (patch, findutils, gcc-4.7, binutils-boot0,
  gcc-boot0, glibc-final-with-bootstrap-bash, cross-gcc-wrapper,
  static-bash-for-glibc, binutils-final, gcc-final): Change `arguments'
  from a lambda to a list, and use (%current-system) as needed.
  (nix-system->gnu-triplet, boot-triplet): Have the first argument
  default to (%current-system).
* gnu/packages/bootstrap.scm (glibc-dynamic-linker): Have `system'
  default to (%current-system).
  (%bootstrap-gcc): Change `arguments' to a list.
* gnu/packages/gawk.scm (gawk): Likewise.
* gnu/packages/m4.scm (m4): Likewise.
* gnu/packages/make-bootstrap.scm (%glibc-for-bootstrap): Likewise, and
  expect `package-arguments' to return a list.
  (%static-inputs, %gcc-static, tarball-package): Likewise.
* gnu/packages/ncurses.scm (ncurses): Likewise.

1 files changed, 12 insertions, 16 deletions

diff --git a/gnu/packages/gawk.scm b/gnu/packages/gawk.scm
index 802042665a..ad87043d96 100644
--- a/gnu/packages/gawk.scm
+++ b/gnu/packages/gawk.scm
@@ -36,24 +36,20 @@
              (base32 "0sss7rhpvizi2a88h6giv0i7w5h07s2fxkw3s6n1hqvcnhrfgbb0"))))
    (build-system gnu-build-system)
    (arguments
-    (case-lambda
-      ((system)
-       `(#:parallel-tests? #f             ; test suite fails in parallel
+    `(#:parallel-tests? #f                ; test suite fails in parallel
 
-         ;; Work around test failure on Cygwin.
-         #:tests? ,(not (string=? system "i686-cygwin"))
+      ;; Work around test failure on Cygwin.
+      #:tests? ,(not (string=? (%current-system) "i686-cygwin"))
 
-         #:phases (alist-cons-before
-                   'configure 'set-shell-file-name
-                   (lambda* (#:key inputs #:allow-other-keys)
-                     ;; Refer to the right shell.
-                     (let ((bash (assoc-ref inputs "bash")))
-                       (substitute* "io.c"
-                         (("/bin/sh")
-                          (string-append bash "/bin/bash")))))
-                   %standard-phases)))
-      ((system cross-system)
-       '(#:parallel-tests? #f))))
+      #:phases (alist-cons-before
+                'configure 'set-shell-file-name
+                (lambda* (#:key inputs #:allow-other-keys)
+                  ;; Refer to the right shell.
+                  (let ((bash (assoc-ref inputs "bash")))
+                    (substitute* "io.c"
+                      (("/bin/sh")
+                       (string-append bash "/bin/bash")))))
+                %standard-phases)))
    (inputs `(("libsigsegv" ,libsigsegv)))
    (home-page "http://www.gnu.org/software/gawk/")
    (synopsis "GNU implementation of the Awk programming language")