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21/24: gnu: services: Add %hurd-startup-service.


From: guix-commits
Subject: 21/24: gnu: services: Add %hurd-startup-service.
Date: Sat, 6 Jun 2020 11:09:41 -0400 (EDT)

janneke pushed a commit to branch wip-hurd-vm
in repository guix.

commit 7bfe4aaa730cab2a93275af2057e707ec00cf7ea
Author: Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
AuthorDate: Thu Apr 30 15:40:07 2020 +0200

    gnu: services: Add %hurd-startup-service.
    
    This decouples startup of the Hurd from the "hurd" package, moving the RC
    script into SYSTEM.
    
    * gnu/packages/hurd.scm (hurd)[inputs]: Remove hurd-rc-script.
    [arguments]: Do not substitute it.  Update "runsystem.sh" to parse kernel
    arguments and exec into --system=SYSTEM/rc.
    (hurd-rc-script): Move to...
    * gnu/services.scm (%hurd-rc-file): ...this new variable.
    (hurd-rc-entry): New procedure.
    (%hurd-startup-service): Use it in new variable.
    * gnu/system.scm (hurd-default-essential-services): Use it.
---
 gnu/packages/hurd.scm | 52 ++++++++++++---------------------------------------
 gnu/services.scm      | 35 ++++++++++++++++++++++++++++++++++
 gnu/system.scm        |  1 +
 3 files changed, 48 insertions(+), 40 deletions(-)

diff --git a/gnu/packages/hurd.scm b/gnu/packages/hurd.scm
index b2cbfa8..43725ba 100644
--- a/gnu/packages/hurd.scm
+++ b/gnu/packages/hurd.scm
@@ -310,32 +310,6 @@ Hurd-minimal package which are needed for both glibc and 
GCC.")
      (base32
       "0p2vhnc18cnbmb39vq4m7hzv4mhnm2l0a2s7gx3ar277fwng3hys"))))
 
-(define (hurd-rc-script)
-  "Return a script to be installed as /libexec/rc in the 'hurd' package.  The
-script takes care of installing the relevant passive translators on the first
-boot, since this cannot be done from GNU/Linux.  Then, it runs system
-activation; starting the Shepherd."
-
-  (define rc
-    (with-imported-modules '((guix build utils)
-                             (gnu build hurd-boot)
-                             (guix build syscalls))
-      #~(begin
-          (use-modules (guix build utils)
-                       (gnu build hurd-boot)
-                       (guix build syscalls)
-                       (ice-9 match)
-                       (system repl repl)
-                       (srfi srfi-1)
-                       (srfi srfi-26))
-
-          (boot-hurd-system))))
-
-  ;; FIXME: We want the program to use the cross-compiled Guile when
-  ;; cross-compiling.  But why do we need to be explicit here?
-  (with-parameters ((%current-target-system "i586-pc-gnu"))
-    (program-file "rc" rc)))
-
 (define dde-sources
   ;; This is the current tip of the dde branch
   (let ((commit "ac1c7eb7a8b24b7469bed5365be38a968d59a136"))
@@ -419,11 +393,19 @@ fsysopts / --writable
 
 # Note: this /hurd/ gets substituted
 settrans -c /servers/socket/1 /hurd/pflocal
-echo Starting /libexec/rc ...
-exec /libexec/rc \"$@\"
-")))
-             ))
 
+# parse multiboot arguments
+for i in \"$@\"; do
+    case $i in
+        (--system=*)
+            system=${i#--system=}
+            ;;
+    esac
+done
+
+echo Starting ${system}/rc...
+exec ${system}/rc \"$@\"
+")))))
          (add-before 'build 'set-file-names
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let* ((out  (assoc-ref outputs "out"))
@@ -497,15 +479,6 @@ exec /libexec/rc \"$@\"
                (mkdir-p datadir)
                (copy-file "unifont"
                           (string-append datadir "/vga-system.bdf"))
-               #t)))
-         (add-after 'install 'install-rc-file
-           (lambda* (#:key inputs outputs #:allow-other-keys)
-             (let* ((out  (assoc-ref outputs "out"))
-                    (file (string-append out "/libexec/rc"))
-                    (rc   (assoc-ref inputs "hurd-rc"))
-                    (coreutils (assoc-ref inputs "coreutils")))
-               (delete-file file)
-               (copy-file rc file)
                #t))))
        #:configure-flags (list (string-append "LDFLAGS=-Wl,-rpath="
                                               %output "/lib")
@@ -520,7 +493,6 @@ exec /libexec/rc \"$@\"
     (build-system gnu-build-system)
     (inputs
      `(("glibc-hurd-headers" ,glibc/hurd-headers)
-       ("hurd-rc" ,(hurd-rc-script))
 
        ("libgcrypt" ,libgcrypt)                  ;for /hurd/random
        ("libdaemon" ,libdaemon)                  ;for /bin/console --daemonize
diff --git a/gnu/services.scm b/gnu/services.scm
index 63a709f..27e5558 100644
--- a/gnu/services.scm
+++ b/gnu/services.scm
@@ -93,6 +93,8 @@
             activation-service-type
             activation-service->script
             %linux-bare-metal-service
+            %hurd-rc-script
+            %hurd-startup-service
             special-files-service-type
             extra-special-file
             etc-service-type
@@ -605,6 +607,39 @@ ACTIVATION-SCRIPT-TYPE."
                   activation-service-type
                   %linux-kernel-activation))
 
+(define %hurd-rc-script
+  ;; The RC script to be started upon boot.
+  (program-file "rc"
+                (with-imported-modules (source-module-closure
+                                        '((guix build utils)
+                                          (gnu build hurd-boot)
+                                          (guix build syscalls)))
+                  #~(begin
+                      (use-modules (guix build utils)
+                                   (gnu build hurd-boot)
+                                   (guix build syscalls)
+                                   (ice-9 match)
+                                   (system repl repl)
+                                   (srfi srfi-1)
+                                   (srfi srfi-26))
+                      (boot-hurd-system)))))
+
+(define (hurd-rc-entry rc)
+  "Return, as a monadic value, an entry for the RC script in the system
+directory."
+  (mlet %store-monad ((rc (lower-object rc)))
+    (return `(("rc" ,rc)))))
+
+(define hurd-startup-service-type
+  ;; The service that creates the initial SYSTEM/rc startup file.
+  (service-type (name 'startup)
+                (extensions
+                 (list (service-extension system-service-type hurd-rc-entry)))
+                (default-value %hurd-rc-script)))
+
+(define %hurd-startup-service
+  ;; The service that produces the RC script.
+  (service hurd-startup-service-type %hurd-rc-script))
 
 (define special-files-service-type
   ;; Service to install "special files" such as /bin/sh and /usr/bin/env.
diff --git a/gnu/system.scm b/gnu/system.scm
index 7cdc651..24def81 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -603,6 +603,7 @@ bookkeeping."
 (define (hurd-default-essential-services os)
   (list (service system-service-type '())
         %boot-service
+        %hurd-startup-service
         %activation-service
         %shepherd-root-service
         (service user-processes-service-type)



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