~ruther/guix-local

841fd4880a03d04bf20cc51fcc1a4c956d28d74c — Leo Nikkilä 2 years ago 14210b7
linux-container: Inherit essential services.

Currently it's not possible to set `essential-services' when building
operating systems for containers, since `container-essential-services'
always uses the defaults.

It's possible to reference `essential-services' from the operating
system that's passed in, but since it's thunked, the operating system
needs to be defined in two passes to avoid an infinite loop.

* gnu/system/linux-container.scm (container-essential-services): Use
operating-system-essential-services instead of the defaults to allow
overriding the base services.
(containerized-operating-system): Update accordingly.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Change-Id: I81452487ef1ad01d3fa874c26d93a67d58ce6062
1 files changed, 47 insertions(+), 41 deletions(-)

M gnu/system/linux-container.scm
M gnu/system/linux-container.scm => gnu/system/linux-container.scm +47 -41
@@ 6,6 6,7 @@
;;; Copyright © 2020 Google LLC
;;; Copyright © 2022 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2023 Pierre Langlois <pierre.langlois@gmx.com>
;;; Copyright © 2024 Leo Nikkilä <hello@lnikki.la>
;;;
;;; This file is part of GNU Guix.
;;;


@@ 56,7 57,7 @@ from OS that are needed on the bare metal and not in a container."
                           (if shared-network?
                               (list hosts-service-type)
                               '()))))
            (operating-system-default-essential-services os)))
            (operating-system-essential-services os)))

  (cons (service system-service-type
                 `(("locale" ,(operating-system-locale-directory os))))


@@ 144,48 145,53 @@ containerized OS.  EXTRA-FILE-SYSTEMS is a list of file systems to add to OS."
        (list (service dummy-networking-service-type))
        '()))

  (define os-with-base-essential-services
    (operating-system
      (inherit os)
      (swap-devices '()) ; disable swap
      (services
       (append services-to-add
               (filter-map (lambda (s)
                             (cond ((memq (service-kind s) services-to-drop)
                                    #f)
                                   ((eq? nscd-service-type (service-kind s))
                                    (service nscd-service-type
                                             (nscd-configuration
                                              (inherit (service-value s))
                                              (caches %nscd-container-caches))))
                                   ((eq? guix-service-type (service-kind s))
                                    ;; Pass '--disable-chroot' so that
                                    ;; guix-daemon can build thing even in
                                    ;; Docker without '--privileged'.
                                    (service guix-service-type
                                             (guix-configuration
                                              (inherit (service-value s))
                                              (extra-options
                                               (cons "--disable-chroot"
                                                     (guix-configuration-extra-options
                                                      (service-value s)))))))
                                   (else s)))
                           (operating-system-user-services os))))
      (file-systems (append (map mapping->fs
                                 (if shared-network?
                                     (append %network-file-mappings mappings)
                                     mappings))
                            extra-file-systems
                            user-file-systems

                            ;; Provide a dummy root file system so we can create
                            ;; a 'boot-parameters' file.
                            (list (file-system
                                    (mount-point "/")
                                    (device "nothing")
                                    (type "dummy")))))))

  ;; `essential-services' is thunked, we need to evaluate it separately.
  (operating-system
    (inherit os)
    (swap-devices '()) ; disable swap
    (inherit os-with-base-essential-services)
    (essential-services (container-essential-services
                         this-operating-system
                         #:shared-network? shared-network?))
    (services
     (append services-to-add
             (filter-map (lambda (s)
                           (cond ((memq (service-kind s) services-to-drop)
                                  #f)
                                 ((eq? nscd-service-type (service-kind s))
                                  (service nscd-service-type
                                           (nscd-configuration
                                            (inherit (service-value s))
                                            (caches %nscd-container-caches))))
                                 ((eq? guix-service-type (service-kind s))
                                  ;; Pass '--disable-chroot' so that
                                  ;; guix-daemon can build thing even in
                                  ;; Docker without '--privileged'.
                                  (service guix-service-type
                                           (guix-configuration
                                            (inherit (service-value s))
                                            (extra-options
                                             (cons "--disable-chroot"
                                                   (guix-configuration-extra-options
                                                    (service-value s)))))))
                                 (else s)))
                         (operating-system-user-services os))))
    (file-systems (append (map mapping->fs
                               (if shared-network?
                                   (append %network-file-mappings mappings)
                                   mappings))
                          extra-file-systems
                          user-file-systems

                          ;; Provide a dummy root file system so we can create
                          ;; a 'boot-parameters' file.
                          (list (file-system
                                  (mount-point "/")
                                  (device "nothing")
                                  (type "dummy")))))))
                         os-with-base-essential-services
                         #:shared-network? shared-network?))))

(define* (container-script os #:key (mappings '()) shared-network?)
  "Return a derivation of a script that runs OS as a Linux container.