gnu: commencement: stage0-posix: Use new package style.

* gnu/packages/commencement.scm (stage0-posix)[arguments]: Also use gexps for
inputs and output.

1 files changed, 8 insertions, 7 deletions

diff --git a/gnu/packages/commencement.scm b/gnu/packages/commencement.scm
index ffaa5f03de..0089c2607c 100644
--- a/gnu/packages/commencement.scm
+++ b/gnu/packages/commencement.scm
@@ -365,13 +365,14 @@ hex1, hex2, M1, and M2-Planet.")
         #:builder
         #~(begin
             (use-modules (guix build utils))
-            (let* ((bootstrap-seeds (assoc-ref %build-inputs "bootstrap-seeds"))
-                   (source (assoc-ref %build-inputs "source"))
-                   (tar (assoc-ref %build-inputs "bootar"))
-                   (bash (assoc-ref %build-inputs "bash"))
-                   (coreutils (assoc-ref %build-inputs "coreutils"))
-                   (guile (assoc-ref %build-inputs "guile"))
-                   (out (assoc-ref %outputs "out"))
+            (let* ((bootstrap-seeds #$(this-package-native-input
+                                       "bootstrap-seeds"))
+                   (source #$(package-source this-package))
+                   (tar #$(this-package-native-input "bootar"))
+                   (bash #$(this-package-native-input "bash"))
+                   (coreutils #$(this-package-native-input "coreutils"))
+                   (guile #$(this-package-input "guile"))
+                   (out #$output)
                    (bindir (string-append out "/bin"))
                    (target (or #$(%current-target-system)
                                #$(%current-system)))