guix/gnu/services/nix.scm
Ludovic Courtès db170ee921
services: Add missing (ice-9 format) import.
These issues were reported by -Wformat, though they were harmless in
practice because importing (ice-9 format) changes the global 'format'
binding currently.

* gnu/services/nix.scm: Import (ice-9 format).
* gnu/services/web.scm: Likewise.
* gnu/system/mapped-devices.scm: Likewise.
2020-06-25 01:20:31 +02:00

115 lines
3.8 KiB
Scheme
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Oleg Pykhalov <go.wigust@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu services nix)
#:use-module (gnu packages admin)
#:use-module (gnu packages package-management)
#:use-module (gnu services base)
#:use-module (gnu services configuration)
#:use-module (gnu services shepherd)
#:use-module (gnu services web)
#:use-module (gnu services)
#:use-module (gnu system shadow)
#:use-module (guix gexp)
#:use-module (guix packages)
#:use-module (guix records)
#:use-module (guix store)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 format)
#:export (nix-service-type))
;;; Commentary:
;;;
;;; This module provides a service definition for the Nix daemon.
;;;
;;; Code:
;;;
;;; Accounts
;;;
;; Copied from gnu/services/base.scm
(define* (nix-build-accounts count #:key
(group "nixbld")
(shadow shadow))
"Return a list of COUNT user accounts for Nix build users with the given
GID."
(unfold (cut > <> count)
(lambda (n)
(user-account
(name (format #f "nixbld~2,'0d" n))
(system? #t)
(group group)
(supplementary-groups (list group "kvm"))
(comment (format #f "Nix Build User ~2d" n))
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin"))))
1+
1))
(define (nix-accounts _)
"Return the user accounts and user groups."
(cons (user-group
(name "nixbld")
(system? #t)
;; Use a fixed GID so that we can create the store with the right
;; owner.
(id 40000))
(nix-build-accounts 10 #:group "nixbld")))
(define (nix-activation _)
"Return the activation gexp."
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils)
(srfi srfi-26))
(for-each (cut mkdir-p <>) '("/nix/store" "/nix/var/log"
"/nix/var/nix/gcroots/per-user"
"/nix/var/nix/profiles/per-user"))
(chown "/nix/store"
(passwd:uid (getpw "root")) (group:gid (getpw "nixbld01")))
(chmod "/nix/store" #o775)
(for-each (cut chmod <> #o777) '("/nix/var/nix/profiles"
"/nix/var/nix/profiles/per-user")))))
(define (nix-shepherd-service _)
"Return a <shepherd-service> for Nix."
(list
(shepherd-service
(provision '(nix-daemon))
(documentation "Run nix-daemon.")
(requirement '())
(start #~(make-forkexec-constructor
(list (string-append #$nix "/bin/nix-daemon"))))
(respawn? #f)
(stop #~(make-kill-destructor)))))
(define nix-service-type
(service-type
(name 'nix)
(extensions
(list (service-extension shepherd-root-service-type nix-shepherd-service)
(service-extension account-service-type nix-accounts)
(service-extension activation-service-type nix-activation)))
(default-value '())
(description "Run the Nix daemon.")))
;;; nix.scm ends here