1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2022 Alex Griffin <a@ajgrf.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 system wsl)
#:use-module (gnu bootloader)
#:use-module (gnu packages admin)
#:use-module (gnu packages base)
#:use-module (gnu packages bash)
#:use-module (gnu packages guile)
#:use-module (gnu packages linux)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu system)
#:use-module (gnu system shadow)
#:use-module (guix build-system trivial)
#:use-module (guix gexp)
#:use-module (guix packages)
#:export (wsl-boot-program
wsl-os))
(define (wsl-boot-program user)
"Program that runs the system boot script, then starts a login shell as USER."
(program-file
"wsl-boot-program"
#~(begin
(unless (file-exists? "/run/current-system")
(let ((shepherd-socket "/var/run/shepherd/socket"))
;; Clean up this file so we can wait for it later.
(when (file-exists? shepherd-socket)
(delete-file shepherd-socket))
;; Child process boots the system and is replaced by shepherd.
(when (zero? (primitive-fork))
(let* ((system-generation (readlink "/var/guix/profiles/system"))
(system (readlink
(string-append (if (absolute-file-name? system-generation)
""
"/var/guix/profiles/")
system-generation))))
(setenv "GUIX_NEW_SYSTEM" system)
(execl #$(file-append guile-3.0 "/bin/guile")
"guile"
"--no-auto-compile"
(string-append system "/boot"))))
;; Parent process waits for shepherd before continuing.
(while (not (file-exists? shepherd-socket))
(sleep 1))))
(let* ((pw (getpw #$user))
(shell (passwd:shell pw))
(sudo #+(file-append sudo "/bin/sudo"))
(args (cdr (command-line))))
;; Save the value of $PATH set by WSL. Useful for finding
;; Windows binaries to run with WSL's binfmt interop.
(setenv "WSLPATH" (getenv "PATH"))
;; Start login shell as user.
(apply execl sudo "sudo"
"--preserve-env=WSLPATH"
"-u" #$user
"--"
shell "-l" args)))))
(define dummy-package
(package
(name "dummy")
(version "0")
(source #f)
(build-system trivial-build-system)
(arguments
`(#:modules ((guix build utils))
#:target #f
#:builder (begin
(use-modules (guix build utils))
(let* ((out (assoc-ref %outputs "out"))
(dummy (string-append out "/dummy")))
(mkdir-p out)
(call-with-output-file dummy
(const #t))
#t))))
(home-page #f)
(synopsis #f)
(description #f)
(license #f)))
(define dummy-bootloader
(bootloader
(name 'dummy-bootloader)
(package dummy-package)
(configuration-file "/dev/null")
(configuration-file-generator
(lambda (. _rest)
(plain-file "dummy-bootloader" "")))
(installer #~(const #t))))
(define dummy-kernel dummy-package)
(define (dummy-initrd . _rest)
(plain-file "dummy-initrd" ""))
(define-public wsl-os
(operating-system
(host-name "gnu")
(timezone "Etc/UTC")
(bootloader
(bootloader-configuration
(bootloader dummy-bootloader)))
(kernel dummy-kernel)
(initrd dummy-initrd)
(initrd-modules '())
(firmware '())
(file-systems '())
(users (cons* (user-account
(name "guest")
(group "users")
(supplementary-groups '("wheel")) ; allow use of sudo
(password "")
(comment "Guest of GNU"))
(user-account
(inherit %root-account)
(shell (wsl-boot-program "guest")))
%base-user-accounts))
(services (list (service guix-service-type)
(service special-files-service-type
`(("/bin/sh" ,(file-append bash "/bin/bash"))
("/bin/mount" ,(file-append util-linux "/bin/mount"))
("/usr/bin/env" ,(file-append coreutils "/bin/env"))))))))
|