Commit | Line | Data |
---|---|---|
2ca299ca | 1 | ;;; GNU Guix --- Functional package management for GNU |
a9f4a7ee | 2 | ;;; Copyright © 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org> |
e8728862 | 3 | ;;; Copyright © 2020 Simon Tournier <zimon.toutoune@gmail.com> |
c924e541 | 4 | ;;; Copyright © 2020 Konrad Hinsen <konrad.hinsen@fastmail.net> |
2ca299ca LC |
5 | ;;; |
6 | ;;; This file is part of GNU Guix. | |
7 | ;;; | |
8 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
9 | ;;; under the terms of the GNU General Public License as published by | |
10 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
11 | ;;; your option) any later version. | |
12 | ;;; | |
13 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
14 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | ;;; GNU General Public License for more details. | |
17 | ;;; | |
18 | ;;; You should have received a copy of the GNU General Public License | |
19 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
20 | ||
21 | (define-module (guix scripts repl) | |
22 | #:use-module (guix ui) | |
23 | #:use-module (guix scripts) | |
92a4087b | 24 | #:use-module (guix repl) |
2ca299ca | 25 | #:use-module (srfi srfi-1) |
c924e541 | 26 | #:use-module (srfi srfi-26) |
2ca299ca LC |
27 | #:use-module (srfi srfi-37) |
28 | #:use-module (ice-9 match) | |
29 | #:use-module (rnrs bytevectors) | |
30 | #:autoload (system repl repl) (start-repl) | |
31 | #:autoload (system repl server) | |
32 | (make-tcp-server-socket make-unix-domain-server-socket) | |
92a4087b | 33 | #:export (guix-repl)) |
2ca299ca LC |
34 | |
35 | ;;; Commentary: | |
36 | ;;; | |
c924e541 KH |
37 | ;;; This command provides a Guile script runner and REPL in an environment |
38 | ;;; that contains all the modules comprising Guix. | |
2ca299ca LC |
39 | |
40 | (define %default-options | |
41 | `((type . guile))) | |
42 | ||
43 | (define %options | |
44 | (list (option '(#\h "help") #f #f | |
45 | (lambda args | |
46 | (show-help) | |
47 | (exit 0))) | |
48 | (option '(#\V "version") #f #f | |
49 | (lambda args | |
50 | (show-version-and-exit "guix repl"))) | |
51 | (option '(#\t "type") #t #f | |
52 | (lambda (opt name arg result) | |
53 | (alist-cons 'type (string->symbol arg) result))) | |
54 | (option '("listen") #t #f | |
55 | (lambda (opt name arg result) | |
e8728862 | 56 | (alist-cons 'listen arg result))) |
a9f4a7ee LC |
57 | (option '(#\q) #f #f |
58 | (lambda (opt name arg result) | |
59 | (alist-cons 'ignore-dot-guile? #t result))) | |
358f66a0 LC |
60 | (option '(#\L "load-path") #t #f |
61 | (lambda (opt name arg result) | |
62 | ;; XXX: Imperatively modify the search paths. | |
63 | (set! %load-path (cons arg %load-path)) | |
64 | (set! %load-compiled-path (cons arg %load-compiled-path)) | |
65 | result)))) | |
2ca299ca LC |
66 | |
67 | ||
68 | (define (show-help) | |
c924e541 KH |
69 | (display (G_ "Usage: guix repl [OPTIONS...] [-- FILE ARGS...] |
70 | In the Guix execution environment, run FILE as a Guile script with | |
71 | command-line arguments ARGS. If no FILE is given, start a Guile REPL.\n")) | |
2ca299ca LC |
72 | (display (G_ " |
73 | -t, --type=TYPE start a REPL of the given TYPE")) | |
d14e4745 | 74 | (display (G_ " |
eb602532 | 75 | --listen=ENDPOINT listen to ENDPOINT instead of standard input")) |
a9f4a7ee LC |
76 | (display (G_ " |
77 | -q inhibit loading of ~/.guile")) | |
d14e4745 | 78 | (newline) |
e8728862 | 79 | (display (G_ " |
80 | -L, --load-path=DIR prepend DIR to the package module search path")) | |
2ca299ca LC |
81 | (newline) |
82 | (display (G_ " | |
83 | -h, --help display this help and exit")) | |
84 | (display (G_ " | |
85 | -V, --version display version information and exit")) | |
86 | (newline) | |
87 | (show-bug-report-information)) | |
88 | ||
2ca299ca LC |
89 | (define user-module |
90 | ;; Module where we execute user code. | |
91 | (let ((module (resolve-module '(guix-user) #f #f #:ensure #t))) | |
92 | (beautify-user-module! module) | |
93 | module)) | |
94 | ||
2ca299ca LC |
95 | (define (call-with-connection spec thunk) |
96 | "Dynamically-bind the current input and output ports according to SPEC and | |
97 | call THUNK." | |
98 | (if (not spec) | |
99 | (thunk) | |
100 | ||
101 | ;; Note: the "PROTO:" prefix in SPEC is here so that we can eventually | |
102 | ;; parse things like "fd:123" in a non-ambiguous way. | |
103 | (match (string-index spec #\:) | |
104 | (#f | |
105 | (leave (G_ "~A: invalid listen specification~%") spec)) | |
106 | (index | |
107 | (let ((protocol (string-take spec index)) | |
108 | (address (string-drop spec (+ index 1)))) | |
109 | (define socket | |
110 | (match protocol | |
111 | ("tcp" | |
112 | (make-tcp-server-socket #:port (string->number address))) | |
113 | ("unix" | |
114 | (make-unix-domain-server-socket #:path address)) | |
115 | (_ | |
116 | (leave (G_ "~A: unsupported protocol family~%") | |
117 | protocol)))) | |
118 | ||
119 | (listen socket 10) | |
120 | (let loop () | |
121 | (match (accept socket) | |
122 | ((connection . address) | |
123 | (if (= AF_UNIX (sockaddr:fam address)) | |
124 | (info (G_ "accepted connection~%")) | |
125 | (info (G_ "accepted connection from ~a~%") | |
126 | (inet-ntop (sockaddr:fam address) | |
127 | (sockaddr:addr address)))) | |
128 | (dynamic-wind | |
129 | (const #t) | |
130 | (lambda () | |
131 | (parameterize ((current-input-port connection) | |
132 | (current-output-port connection)) | |
133 | (thunk))) | |
134 | (lambda () | |
135 | (false-if-exception (close-port connection)) | |
136 | (info (G_ "connection closed~%")))))) | |
137 | (loop))))))) | |
138 | ||
139 | \f | |
3794ce93 LC |
140 | (define-command (guix-repl . args) |
141 | (category plumbing) | |
142 | (synopsis "read-eval-print loop (REPL) for interactive programming") | |
143 | ||
2ca299ca | 144 | (define opts |
2ca299ca LC |
145 | (args-fold* args %options |
146 | (lambda (opt name arg result) | |
147 | (leave (G_ "~A: unrecognized option~%") name)) | |
148 | (lambda (arg result) | |
c924e541 | 149 | (append `((script . ,arg) |
290c3166 | 150 | (ignore-dot-guile? . #t)) |
c924e541 | 151 | result)) |
2ca299ca LC |
152 | %default-options)) |
153 | ||
a9f4a7ee LC |
154 | (define user-config |
155 | (and=> (getenv "HOME") | |
156 | (lambda (home) | |
157 | (string-append home "/.guile")))) | |
158 | ||
c924e541 KH |
159 | (define (set-user-module) |
160 | (set-current-module user-module) | |
161 | (when (and (not (assoc-ref opts 'ignore-dot-guile?)) | |
162 | user-config | |
163 | (file-exists? user-config)) | |
164 | (load user-config))) | |
165 | ||
166 | (define script | |
167 | (reverse | |
168 | (filter-map (match-lambda | |
169 | (('script . script) script) | |
170 | (_ #f)) | |
171 | opts))) | |
172 | ||
2ca299ca | 173 | (with-error-handling |
c924e541 KH |
174 | |
175 | (unless (null? script) | |
176 | ;; Run script | |
177 | (save-module-excursion | |
178 | (lambda () | |
179 | (set-program-arguments script) | |
180 | (set-user-module) | |
d7f7ed39 KH |
181 | |
182 | ;; When passed a relative file name, 'load-in-vicinity' searches the | |
183 | ;; file in %LOAD-PATH. Thus, pass (getcwd) instead of ".". | |
184 | (load-in-vicinity (getcwd) (car script))))) | |
c924e541 KH |
185 | |
186 | (when (null? script) | |
187 | ;; Start REPL | |
188 | (let ((type (assoc-ref opts 'type))) | |
189 | (call-with-connection (assoc-ref opts 'listen) | |
190 | (lambda () | |
191 | (case type | |
192 | ((guile) | |
193 | (save-module-excursion | |
194 | (lambda () | |
195 | (set-user-module) | |
196 | ;; Do not exit repl on SIGINT. | |
197 | ((@@ (ice-9 top-repl) call-with-sigint) | |
198 | (lambda () | |
199 | (start-repl)))))) | |
200 | ((machine) | |
201 | (machine-repl)) | |
202 | (else | |
203 | (leave (G_ "~a: unknown type of REPL~%") type))))))))) | |
2ca299ca LC |
204 | |
205 | ;; Local Variables: | |
206 | ;; eval: (put 'call-with-connection 'scheme-indent-function 1) | |
207 | ;; End: |