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

* guix/packages.scm (<package>)[inputs]: Mark as thunked.
  (package-derivation)[expand-input]: Remove case where the input is a
  procedure.
* tests/packages.scm ("trivial with system-dependent input"): Remove
  `lambda', and use (%current-system).
* gnu/packages/bootstrap.scm (package-from-tarball): Likewise for `inputs'.
  (%bootstrap-glibc, %bootstrap-gcc): Likewise.
* gnu/packages/scheme.scm (mit-scheme): Likewise.

1 files changed, 36 insertions, 46 deletions

diff --git a/gnu/packages/bootstrap.scm b/gnu/packages/bootstrap.scm
index ea2cf618f2..b0ab70abbc 100644
--- a/gnu/packages/bootstrap.scm
+++ b/gnu/packages/bootstrap.scm
@@ -99,12 +99,9 @@ check whether everything is alright."
                   (zero? (system* (string-append "bin/" ,program-to-test)
                                   "--version"))))))))
     (inputs
-     `(("tar" ,(lambda (system)
-                 (search-bootstrap-binary "tar" system)))
-       ("xz"  ,(lambda (system)
-                 (search-bootstrap-binary "xz" system)))
-       ("tarball" ,(lambda (system)
-                     (bootstrap-origin (source* system))))))
+     `(("tar" ,(search-bootstrap-binary "tar" (%current-system)))
+       ("xz"  ,(search-bootstrap-binary "xz" (%current-system)))
+       ("tarball" ,(bootstrap-origin (source* (%current-system))))))
     (synopsis description*)
     (description #f)
     (home-page #f)))
@@ -269,25 +266,22 @@ $out/bin/guile --version~%"
                (("/[^ ]+/lib/(libc|ld)" _ prefix)
                 (string-append out "/lib/" prefix))))))))
     (inputs
-     `(("tar" ,(lambda (system)
-                 (search-bootstrap-binary "tar" system)))
-       ("xz"  ,(lambda (system)
-                 (search-bootstrap-binary "xz" system)))
-       ("tarball" ,(lambda (system)
-                     (bootstrap-origin
-                      (origin
-                       (method url-fetch)
-                       (uri (map (cut string-append <> "/" system
-                                      "/20130105/glibc-2.17.tar.xz")
-                                 %bootstrap-base-urls))
-                       (sha256
-                        (match system
-                          ("x86_64-linux"
-                           (base32
-                            "18kv1z9d8dr1j3hm9w7663kchqw9p6rsx11n1m143jgba2jz6jy3"))
-                          ("i686-linux"
-                           (base32
-                            "08hv8i0axwnihrcgbz19x0a7s6zyv3yx38x8r29liwl8h82x9g88"))))))))))
+     `(("tar" ,(search-bootstrap-binary "tar" (%current-system)))
+       ("xz"  ,(search-bootstrap-binary "xz" (%current-system)))
+       ("tarball" ,(bootstrap-origin
+                    (origin
+                     (method url-fetch)
+                     (uri (map (cut string-append <> "/" (%current-system)
+                                    "/20130105/glibc-2.17.tar.xz")
+                               %bootstrap-base-urls))
+                     (sha256
+                      (match (%current-system)
+                        ("x86_64-linux"
+                         (base32
+                          "18kv1z9d8dr1j3hm9w7663kchqw9p6rsx11n1m143jgba2jz6jy3"))
+                        ("i686-linux"
+                         (base32
+                          "08hv8i0axwnihrcgbz19x0a7s6zyv3yx38x8r29liwl8h82x9g88")))))))))
     (synopsis "Bootstrap binaries and headers of the GNU C Library")
     (description #f)
     (home-page #f)))
@@ -337,28 +331,24 @@ exec ~a/bin/.gcc-wrapped -B~a/lib \
 
              (chmod "gcc" #o555))))))
     (inputs
-     `(("tar" ,(lambda (system)
-                 (search-bootstrap-binary "tar" system)))
-       ("xz"  ,(lambda (system)
-                 (search-bootstrap-binary "xz" system)))
-       ("bash" ,(lambda (system)
-                  (search-bootstrap-binary "bash" system)))
+     `(("tar" ,(search-bootstrap-binary "tar" (%current-system)))
+       ("xz"  ,(search-bootstrap-binary "xz" (%current-system)))
+       ("bash" ,(search-bootstrap-binary "bash" (%current-system)))
        ("libc" ,%bootstrap-glibc)
-       ("tarball" ,(lambda (system)
-                     (bootstrap-origin
-                      (origin
-                       (method url-fetch)
-                       (uri (map (cut string-append <> "/" system
-                                      "/20130105/gcc-4.7.2.tar.xz")
-                                 %bootstrap-base-urls))
-                       (sha256
-                        (match system
-                          ("x86_64-linux"
-                           (base32
-                            "1x1p7han5crnbw906iwdifykr6grzm0w27dy9gz75j0q1b32i4px"))
-                          ("i686-linux"
-                           (base32
-                            "06wqs0xxnpw3hn0xjb4c9cs0899p1xwkcysa2rvzhvpra0c5vsg2"))))))))))
+       ("tarball" ,(bootstrap-origin
+                    (origin
+                     (method url-fetch)
+                     (uri (map (cut string-append <> "/" (%current-system)
+                                    "/20130105/gcc-4.7.2.tar.xz")
+                               %bootstrap-base-urls))
+                     (sha256
+                      (match (%current-system)
+                        ("x86_64-linux"
+                         (base32
+                          "1x1p7han5crnbw906iwdifykr6grzm0w27dy9gz75j0q1b32i4px"))
+                        ("i686-linux"
+                         (base32
+                          "06wqs0xxnpw3hn0xjb4c9cs0899p1xwkcysa2rvzhvpra0c5vsg2")))))))))
     (synopsis "Bootstrap binaries of the GNU Compiler Collection")
     (description #f)
     (home-page #f)))