linux-initrd: 'expression->initrd' returns the complete file name.

Previously 'expression->initrd' would return the directory that contains
the 'initrd' file; now it returns the complete file name for that file.

* gnu/system/linux-initrd.scm (expression->initrd)[builder]: Change
output file name to "initrd.cpio.gz".  Tail-call 'file-append' to return
the complete file name.
* gnu/system.scm (operating-system-initrd-file): Remove 'file-append'
call.
* gnu/build/linux-initrd.scm (write-cpio-archive): Check whether OUTPUT
already has the ".gz" suffix; rename if before invoking GZIP if it does,
and otherwise after.
* gnu/system/vm.scm (expression->derivation-in-linux-vm)[builder]: Do
not append "/initrd" to #$initrd.

1 files changed, 5 insertions, 4 deletions

diff --git a/gnu/system/linux-initrd.scm b/gnu/system/linux-initrd.scm
index a53d3cb106..983c6d81c8 100644
--- a/gnu/system/linux-initrd.scm
+++ b/gnu/system/linux-initrd.scm
@@ -91,16 +91,17 @@ the derivations referenced by EXP are automatically copied to the initrd."
             (lambda (port)
               (simple-format port "~A\n" #$guile)))
 
-          (build-initrd (string-append #$output "/initrd")
+          (build-initrd (string-append #$output "/initrd.cpio.gz")
                         #:guile #$guile
                         #:init #$init
                         ;; Copy everything INIT refers to into the initrd.
                         #:references-graphs '("closure")
                         #:gzip (string-append #$gzip "/bin/gzip")))))
 
-  (computed-file name builder
-                 #:options
-                 `(#:references-graphs (("closure" ,init)))))
+  (file-append (computed-file name builder
+                              #:options
+                              `(#:references-graphs (("closure" ,init))))
+               "/initrd.cpio.gz"))
 
 (define (flat-linux-module-directory linux modules)
   "Return a flat directory containing the Linux kernel modules listed in