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47b9614b | 1 | ;;; GNU Guix --- Functional package management for GNU |
4656180d | 2 | ;;; Copyright © 2019, 2020 Oleg Pykhalov <go.wigust@gmail.com> |
db65d744 | 3 | ;;; Copyright © 2020 Peng Mei Yu <i@pengmeiyu.com> |
47b9614b OP |
4 | ;;; |
5 | ;;; This file is part of GNU Guix. | |
6 | ;;; | |
7 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
8 | ;;; under the terms of the GNU General Public License as published by | |
9 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
10 | ;;; your option) any later version. | |
11 | ;;; | |
12 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
13 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ;;; GNU General Public License for more details. | |
16 | ;;; | |
17 | ;;; You should have received a copy of the GNU General Public License | |
18 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
19 | ||
20 | (define-module (gnu services nix) | |
21 | #:use-module (gnu packages admin) | |
22 | #:use-module (gnu packages package-management) | |
23 | #:use-module (gnu services base) | |
24 | #:use-module (gnu services configuration) | |
25 | #:use-module (gnu services shepherd) | |
26 | #:use-module (gnu services web) | |
27 | #:use-module (gnu services) | |
28 | #:use-module (gnu system shadow) | |
29 | #:use-module (guix gexp) | |
30 | #:use-module (guix packages) | |
31 | #:use-module (guix records) | |
32 | #:use-module (guix store) | |
33 | #:use-module (srfi srfi-1) | |
34 | #:use-module (srfi srfi-26) | |
4656180d | 35 | #:use-module (ice-9 match) |
db170ee9 | 36 | #:use-module (ice-9 format) |
4656180d | 37 | #:use-module (guix modules) |
ee67d193 PMY |
38 | #:export (nix-service-type |
39 | ||
40 | nix-configuration | |
41 | nix-configuration?)) | |
47b9614b OP |
42 | |
43 | ;;; Commentary: | |
44 | ;;; | |
45 | ;;; This module provides a service definition for the Nix daemon. | |
46 | ;;; | |
47 | ;;; Code: | |
48 | ||
4656180d OP |
49 | (define-record-type* <nix-configuration> |
50 | nix-configuration make-nix-configuration | |
51 | nix-configuration? | |
52 | (package nix-configuration-package ;package | |
53 | (default nix)) | |
54 | (sandbox nix-configuration-sandbox ;boolean | |
55 | (default #t)) | |
56 | (build-sandbox-items nix-configuration-build-sandbox-items ;list of strings | |
57 | (default '())) | |
3601d802 | 58 | (extra-config nix-configuration-extra-config ;list of strings |
64c6282e OP |
59 | (default '())) |
60 | (extra-options nix-configuration-extra-options ;list of strings | |
4656180d | 61 | (default '()))) |
47b9614b OP |
62 | |
63 | ;; Copied from gnu/services/base.scm | |
64 | (define* (nix-build-accounts count #:key | |
65 | (group "nixbld") | |
66 | (shadow shadow)) | |
67 | "Return a list of COUNT user accounts for Nix build users with the given | |
68 | GID." | |
69 | (unfold (cut > <> count) | |
70 | (lambda (n) | |
71 | (user-account | |
72 | (name (format #f "nixbld~2,'0d" n)) | |
73 | (system? #t) | |
74 | (group group) | |
75 | (supplementary-groups (list group "kvm")) | |
76 | (comment (format #f "Nix Build User ~2d" n)) | |
77 | (home-directory "/var/empty") | |
78 | (shell (file-append shadow "/sbin/nologin")))) | |
79 | 1+ | |
80 | 1)) | |
81 | (define (nix-accounts _) | |
82 | "Return the user accounts and user groups." | |
83 | (cons (user-group | |
84 | (name "nixbld") | |
85 | (system? #t) | |
86 | ||
87 | ;; Use a fixed GID so that we can create the store with the right | |
88 | ;; owner. | |
89 | (id 40000)) | |
90 | (nix-build-accounts 10 #:group "nixbld"))) | |
91 | ||
4656180d OP |
92 | (define nix-activation |
93 | ;; Return the activation gexp. | |
94 | (match-lambda | |
95 | (($ <nix-configuration> package sandbox build-sandbox-items extra-config) | |
96 | (with-imported-modules (source-module-closure | |
97 | '((guix build store-copy))) | |
98 | #~(begin | |
99 | (use-modules (guix build utils) | |
100 | (ice-9 format) | |
101 | (srfi srfi-1) | |
102 | (srfi srfi-26)) | |
103 | (for-each (cut mkdir-p <>) '("/nix/store" "/nix/var/log" | |
104 | "/nix/var/nix/gcroots/per-user" | |
105 | "/nix/var/nix/profiles/per-user")) | |
106 | (chown "/nix/store" | |
107 | (passwd:uid (getpw "root")) (group:gid (getpw "nixbld01"))) | |
108 | (chmod "/nix/store" #o775) | |
109 | (for-each (cut chmod <> #o777) '("/nix/var/nix/profiles" | |
110 | "/nix/var/nix/profiles/per-user")) | |
111 | (mkdir-p "/etc/nix") | |
112 | (with-output-to-file "/etc/nix/nix.conf" | |
113 | (lambda _ | |
114 | (format #t "sandbox = ~a~%" (if #$sandbox "true" "false")) | |
115 | ;; config.nix captures store file names. | |
116 | (format #t "build-sandbox-paths = ~{~a ~}~%" | |
117 | (append (append-map (cut call-with-input-file <> read) | |
118 | '#$(map references-file | |
119 | (list package))) | |
120 | '#$build-sandbox-items)) | |
64c6282e OP |
121 | (for-each (cut display <>) '#$extra-config) |
122 | (newline)))))))) | |
47b9614b | 123 | |
4656180d OP |
124 | (define nix-shepherd-service |
125 | ;; Return a <shepherd-service> for Nix. | |
126 | (match-lambda | |
64c6282e | 127 | (($ <nix-configuration> package _ _ _ extra-options) |
4656180d OP |
128 | (list |
129 | (shepherd-service | |
130 | (provision '(nix-daemon)) | |
131 | (documentation "Run nix-daemon.") | |
132 | (requirement '()) | |
133 | (start #~(make-forkexec-constructor | |
64c6282e OP |
134 | (list (string-append #$package "/bin/nix-daemon") |
135 | #$@extra-options))) | |
4656180d OP |
136 | (respawn? #f) |
137 | (stop #~(make-kill-destructor))))))) | |
47b9614b OP |
138 | |
139 | (define nix-service-type | |
140 | (service-type | |
141 | (name 'nix) | |
142 | (extensions | |
143 | (list (service-extension shepherd-root-service-type nix-shepherd-service) | |
144 | (service-extension account-service-type nix-accounts) | |
db65d744 PMYG |
145 | (service-extension activation-service-type nix-activation) |
146 | (service-extension profile-service-type | |
147 | (compose list nix-configuration-package)))) | |
4656180d OP |
148 | (description "Run the Nix daemon.") |
149 | (default-value (nix-configuration)))) | |
47b9614b OP |
150 | |
151 | ;;; nix.scm ends here |