gnu: glibc: Rename linux-headers input to kernel-headers.

* gnu/packages/base.scm (glibc)[propagated-inputs]: Use a kernel
  agnostic name for the kernel headers.
  [arguments]: Adjust accordingly.
* gnu/packages/commencement.scm (glibc-final-with-bootstrap-bash)
  [propagated-inputs]: Adjust accordingly.
* gnu/packages/cross-base.scm (cross-gcc-arguments)[arguments]: Adjust
  accordingly.
  (cross-gcc)[native-inputs]: Adjust accordingly.
* gnu/packages/make-bootstrap.scm (%glibc-stripped)[arguments]: Adjust
  accordingly.
  [inputs]: Adjust accordingly.

gnu/packages/base.scm

@@ -479,7 +479,7 @@ (define-public glibc
 
    ;; Glibc's <limits.h> refers to <linux/limit.h>, for instance, so glibc
    ;; users should automatically pull Linux headers as well.
-   (propagated-inputs `(("linux-headers" ,linux-libre-headers)))
+   (propagated-inputs `(("kernel-headers" ,linux-libre-headers)))
 
    (outputs '("out" "debug"))
 
@@ -519,7 +519,7 @@ (define-public glibc
                            ,version)
 
             (string-append "--with-headers="
-                           (assoc-ref %build-inputs "linux-headers")
+                           (assoc-ref %build-inputs "kernel-headers")
                            "/include")
 
             ;; This is the default for most architectures as of GNU libc 2.21,

gnu/packages/commencement.scm

@@ -382,7 +382,7 @@ (define glibc-final-with-bootstrap-bash
                                    "export CPATH\n"
                                    all "\n"))))
                ,phases)))))
-     (propagated-inputs `(("linux-headers" ,(linux-libre-headers-boot0))))
+     (propagated-inputs `(("kernel-headers" ,(linux-libre-headers-boot0))))
      (native-inputs
       `(("texinfo" ,texinfo-boot0)
         ("perl" ,perl-boot0)))

gnu/packages/cross-base.scm

@@ -166,18 +166,18 @@ (define (cross-gcc-arguments target libc)
               `(alist-cons-before
                 'configure 'set-cross-path
                 (lambda* (#:key inputs #:allow-other-keys)
-                  ;; Add the cross Linux headers to CROSS_CPATH, and remove them
+                  ;; Add the cross kernel headers to CROSS_CPATH, and remove them
                   ;; from CPATH.
                   (let ((libc  (assoc-ref inputs "libc"))
-                        (linux (assoc-ref inputs "xlinux-headers")))
+                        (kernel (assoc-ref inputs "xkernel-headers")))
                     (define (cross? x)
                       ;; Return #t if X is a cross-libc or cross Linux.
                       (or (string-prefix? libc x)
-                          (string-prefix? linux x)))
+                          (string-prefix? kernel x)))
 
                     (setenv "CROSS_CPATH"
                             (string-append libc "/include:"
-                                           linux "/include"))
+                                           kernel "/include"))
                     (setenv "CROSS_LIBRARY_PATH"
                             (string-append libc "/lib"))
 
@@ -250,9 +250,9 @@ (define* (cross-gcc target
                                (alist-delete "libc" %final-inputs))))
            (if libc
                `(("libc" ,libc)
-                 ("xlinux-headers"                ;the target headers
+                 ("xkernel-headers"                ;the target headers
                   ,@(assoc-ref (package-propagated-inputs libc)
-                               "linux-headers"))
+                               "kernel-headers"))
                  ,@inputs)
                inputs))))
 
@@ -314,17 +314,17 @@ (define xlinux-headers
                ,flags))
        ((#:phases phases)
         `(alist-cons-before
-          'configure 'set-cross-linux-headers-path
+          'configure 'set-cross-kernel-headers-path
           (lambda* (#:key inputs #:allow-other-keys)
-            (let ((linux (assoc-ref inputs "linux-headers")))
+            (let ((kernel (assoc-ref inputs "kernel-headers")))
               (setenv "CROSS_CPATH"
-                      (string-append linux "/include"))
+                      (string-append kernel "/include"))
               #t))
           ,phases))))
 
-    ;; Shadow the native "linux-headers" because glibc's recipe expects the
-    ;; "linux-headers" input to point to the right thing.
-    (propagated-inputs `(("linux-headers" ,xlinux-headers)))
+    ;; Shadow the native "kernel-headers" because glibc's recipe expects the
+    ;; "kernel-headers" input to point to the right thing.
+    (propagated-inputs `(("kernel-headers" ,xlinux-headers)))
 
     ;; FIXME: 'static-bash' should really be an input, not a native input, but
     ;; to do that will require building an intermediate cross libc.

gnu/packages/make-bootstrap.scm

@@ -344,7 +344,7 @@ (define %glibc-stripped
                   (libdir (string-append out "/lib"))
                   (incdir (string-append out "/include"))
                   (libc   (assoc-ref %build-inputs "libc"))
-                  (linux  (assoc-ref %build-inputs "linux-headers")))
+                  (linux  (assoc-ref %build-inputs "kernel-headers")))
              (mkdir-p libdir)
              (for-each (lambda (file)
                          (let ((target (string-append libdir "/"
@@ -379,7 +379,7 @@ (define %glibc-stripped
                                 (parameterize ((%current-target-system #f))
                                   (cross-libc target)))
                                glibc)))
-                ("linux-headers" ,linux-libre-headers)))
+                ("kernel-headers" ,linux-libre-headers)))
 
       ;; Only one output.
       (outputs '("out")))))