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-rw-r--r--doc/guix.texi36
-rw-r--r--gnu/services/base.scm16
-rw-r--r--gnu/services/virtualization.scm11
3 files changed, 58 insertions, 5 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index b5061877e2..f2fc567865 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -14582,11 +14582,26 @@ Whether to authorize the substitute keys listed in
@code{authorized-keys}---by default that of @code{@value{SUBSTITUTE-SERVER}}
(@pxref{Substitutes}).
+When @code{authorize-key?} is true, @file{/etc/guix/acl} cannot be
+changed by invoking @command{guix archive --authorize}. You must
+instead adjust @code{guix-configuration} as you wish and reconfigure the
+system. This ensures that your operating system configuration file is
+self-contained.
+
+@quotation Note
+When booting or reconfiguring to a system where @code{authorize-key?}
+is true, the existing @file{/etc/guix/acl} file is backed up as
+@file{/etc/guix/acl.bak} if it was determined to be a manually modified
+file. This is to facilitate migration from earlier versions, which
+allowed for in-place modifications to @file{/etc/guix/acl}.
+@end quotation
+
@vindex %default-authorized-guix-keys
@item @code{authorized-keys} (default: @code{%default-authorized-guix-keys})
The list of authorized key files for archive imports, as a list of
string-valued gexps (@pxref{Invoking guix archive}). By default, it
contains that of @code{@value{SUBSTITUTE-SERVER}} (@pxref{Substitutes}).
+See @code{substitute-urls} below for an example on how to change it.
@item @code{use-substitutes?} (default: @code{#t})
Whether to use substitutes.
@@ -14594,6 +14609,27 @@ Whether to use substitutes.
@item @code{substitute-urls} (default: @code{%default-substitute-urls})
The list of URLs where to look for substitutes by default.
+Suppose you would like to fetch substitutes from @code{guix.example.org}
+in addition to @code{@value{SUBSTITUTE-SERVER}}. You will need to do
+two things: (1) add @code{guix.example.org} to @code{substitute-urls},
+and (2) authorize its signing key, having done appropriate checks
+(@pxref{Substitute Server Authorization}). The configuration below does
+exactly that:
+
+@lisp
+(guix-configuration
+ (substitute-urls
+ (append (list "https://guix.example.org")
+ %default-substitute-urls))
+ (authorized-keys
+ (append (list (local-file "./guix.example.org-key.pub"))
+ %default-authorized-guix-keys)))
+@end lisp
+
+This example assumes that the file @file{./guix.example.org-key.pub}
+contains the public key that @code{guix.example.org} uses to sign
+substitutes.
+
@item @code{max-silent-time} (default: @code{0})
@itemx @code{timeout} (default: @code{0})
The number of seconds of silence and the number of seconds of activity,
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index 04bc991356..37b0a13ea7 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -1476,10 +1476,18 @@ archive' public keys, with GUIX."
#~(begin
(use-modules (guix build utils))
- (unless (file-exists? "/etc/guix/acl")
- (mkdir-p "/etc/guix")
- (copy-file #+default-acl "/etc/guix/acl")
- (chmod "/etc/guix/acl" #o600)))))
+ ;; If the ACL already exists, move it out of the way. Create a backup
+ ;; if it's a regular file: it's likely that the user manually updated
+ ;; it with 'guix archive --authorize'.
+ (if (file-exists? "/etc/guix/acl")
+ (if (and (symbolic-link? "/etc/guix/acl")
+ (store-file-name? (readlink "/etc/guix/acl")))
+ (delete-file "/etc/guix/acl")
+ (rename-file "/etc/guix/acl" "/etc/guix/acl.bak"))
+ (mkdir-p "/etc/guix"))
+
+ ;; Installed the declared ACL.
+ (symlink #+default-acl "/etc/guix/acl"))))
(define %default-authorized-guix-keys
;; List of authorized substitute keys.
diff --git a/gnu/services/virtualization.scm b/gnu/services/virtualization.scm
index edd0b644f5..eaf0bbde43 100644
--- a/gnu/services/virtualization.scm
+++ b/gnu/services/virtualization.scm
@@ -875,7 +875,16 @@ that will be listening to receive secret keys on port 1004, TCP."
(permit-root-login #t)
(allow-empty-passwords? #t)
(password-authentication? #t)))
- %base-services/hurd))))
+
+ ;; By default, the secret service introduces a pre-initialized
+ ;; /etc/guix/acl file in the childhurd. Thus, clear
+ ;; 'authorize-key?' so that it's not overridden at activation
+ ;; time.
+ (modify-services %base-services/hurd
+ (guix-service-type config =>
+ (guix-configuration
+ (inherit config)
+ (authorize-key? #f))))))))
(define-record-type* <hurd-vm-configuration>
hurd-vm-configuration make-hurd-vm-configuration