diff options
Diffstat (limited to 'gnu/services')
| -rw-r--r-- | gnu/services/nix.scm | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/gnu/services/nix.scm b/gnu/services/nix.scm new file mode 100644 index 0000000000..72ecb7d089 --- /dev/null +++ b/gnu/services/nix.scm @@ -0,0 +1,112 @@ +;;; 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) + #: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)) + (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 |