;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
(define-module (guix remote)
#:use-module (guix ssh)
#:use-module (guix gexp)
+ #:use-module (guix i18n)
+ #:use-module ((guix diagnostics) #:select (formatted-message))
#:use-module (guix inferior)
#:use-module (guix store)
#:use-module (guix monads)
#:use-module (guix derivations)
#:use-module (guix utils)
#:use-module (ssh popen)
+ #:use-module (ssh channel)
#:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-34)
+ #:use-module (srfi srfi-35)
+ #:use-module (ice-9 format)
#:use-module (ice-9 match)
#:export (remote-eval))
;;;
;;; Code:
-(define (remote-pipe-for-gexp lowered session)
- "Return a remote pipe for the given SESSION to evaluate LOWERED."
+(define* (remote-pipe-for-gexp lowered session #:optional become-command)
+ "Return a remote pipe for the given SESSION to evaluate LOWERED. If
+BECOME-COMMAND is given, use that to invoke the remote Guile REPL."
(define shell-quote
(compose object->string object->string))
- (apply open-remote-pipe* session OPEN_READ
- (string-append (derivation-input-output-path
- (lowered-gexp-guile lowered))
- "/bin/guile")
- "--no-auto-compile"
- (append (append-map (lambda (directory)
- `("-L" ,directory))
- (lowered-gexp-load-path lowered))
- (append-map (lambda (directory)
- `("-C" ,directory))
- (lowered-gexp-load-path lowered))
- `("-c"
- ,(shell-quote (lowered-gexp-sexp lowered))))))
+ (define repl-command
+ (append (or become-command '())
+ (list
+ (string-append (derivation-input-output-path
+ (lowered-gexp-guile lowered))
+ "/bin/guile")
+ "--no-auto-compile")
+ (append-map (lambda (directory)
+ `("-L" ,directory))
+ (lowered-gexp-load-path lowered))
+ (append-map (lambda (directory)
+ `("-C" ,directory))
+ (lowered-gexp-load-path lowered))
+ `("-c"
+ ,(shell-quote (lowered-gexp-sexp lowered)))))
-(define (%remote-eval lowered session)
+ (let ((pipe (apply open-remote-pipe* session OPEN_READ repl-command)))
+ (when (eof-object? (peek-char pipe))
+ (let ((status (channel-get-exit-status pipe)))
+ (close-port pipe)
+ (raise (formatted-message (G_ "remote command '~{~a~^ ~}' failed \
+with status ~a")
+ repl-command status))))
+ pipe))
+
+(define* (%remote-eval lowered session #:optional become-command)
"Evaluate LOWERED, a lowered gexp, in SESSION. This assumes that all the
-prerequisites of EXP are already available on the host at SESSION."
- (let* ((pipe (remote-pipe-for-gexp lowered session))
+prerequisites of EXP are already available on the host at SESSION. If
+BECOME-COMMAND is given, use that to invoke the remote Guile REPL."
+ (let* ((pipe (remote-pipe-for-gexp lowered session become-command))
(result (read-repl-response pipe)))
(close-port pipe)
result))
(build-locally? #t)
(system (%current-system))
(module-path %load-path)
- (socket-name "/var/guix/daemon-socket/socket"))
+ (socket-name (%daemon-socket-uri))
+ (become-command #f))
"Evaluate EXP, a gexp, on the host at SESSION, an SSH session. Ensure that
all the elements EXP refers to are built and deployed to SESSION beforehand.
When BUILD-LOCALLY? is true, said dependencies are built locally and sent to
(built-derivations inputs)
((store-lift send-files) to-send remote #:recursive? #t)
(return (close-connection remote))
- (return (%remote-eval lowered session))))
+ (return (%remote-eval lowered session become-command))))
(let ((to-send (append (map (compose derivation-file-name
derivation-input-derivation)
inputs)
((store-lift send-files) to-send remote #:recursive? #t)
(return (build-derivations remote inputs))
(return (close-connection remote))
- (return (%remote-eval lowered session)))))))
+ (return (%remote-eval lowered session become-command)))))))