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diff --git a/guix/scripts/deploy.scm b/guix/scripts/deploy.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 David Thompson <davet@gnu.org>
+;;;
+;;; 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 (guix scripts deploy)
+  #:use-module (guix ui)
+  #:use-module (guix store)
+  #:use-module (guix derivations)
+  #:use-module (guix packages)
+  #:use-module (guix profiles)
+  #:use-module (guix utils)
+  #:use-module (guix monads)
+  #:use-module (guix build utils)
+  #:use-module (guix scripts)
+  #:use-module (guix scripts build)
+  #:use-module (gnu packages)
+  #:use-module (gnu system)
+  #:use-module (gnu system vm)
+  #:use-module (gnu machines)
+  #:use-module (ice-9 format)
+  #:use-module (ice-9 match)
+  #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-26)
+  #:use-module (srfi srfi-37)
+  #:use-module (srfi srfi-98)
+  #:export (guix-deploy))
+
+(define (show-help)
+  (display (_ "Usage: guix deploy [OPTION] ACTION FILE
+Manage your data beans without disturbing Terry the data goblin.\n"))
+  (newline)
+  (display (_ "The valid values for ACTION are:\n"))
+  (display (_ "\
+  - 'build', build all of the operating systems without deploying\n"))
+  (display (_ "\
+  - 'init', provision and install the operating systems\n"))
+  (display (_ "\
+  - 'reconfigure', update an existing deployment\n"))
+  (display (_ "\
+  - 'destroy', unprovision the deployed operating systems\n"))
+  (display (_ "
+  -e, --expression=EXPR  create environment for the package that EXPR
+                         evaluates to"))
+  (newline)
+  (show-build-options-help)
+  (newline)
+  (display (_ "
+  -h, --help             display this help and exit"))
+  (display (_ "
+  -V, --version          display version information and exit"))
+  (newline)
+  (show-bug-report-information))
+
+(define %default-options
+  `((substitutes? . #t)
+    (max-silent-time . 3600)
+    (verbosity . 0)))
+
+(define %options
+  (cons* (option '(#\h "help") #f #f
+                 (lambda args
+                   (show-help)
+                   (exit 0)))
+         (option '(#\V "version") #f #f
+                 (lambda args
+                   (show-version-and-exit "guix deploy")))
+         %standard-build-options))
+
+(define-syntax-rule (return* body ...)
+  "Generate the monadic form of BODY, an expression evaluated for its
+side-effects.  The result is always #t."
+  (return (begin body ... #t)))
+
+(define (deployment-derivations deployment)
+  (map (lambda (machine)
+         (operating-system-derivation
+          (machine-os-for-platform machine)))
+       (deployment-machines deployment)))
+
+(define (build-deployment deployment)
+  (mlet* %store-monad
+      ((drvs (sequence %store-monad (deployment-derivations deployment))))
+    (mbegin %store-monad
+      (show-what-to-build* drvs)
+      (built-derivations drvs)
+      (return*
+       (for-each (lambda (drv)
+                   (display (derivation->output-path drv))
+                   (newline))
+                 drvs)))))
+
+(define (provision-deployment deployment)
+  (sequence %store-monad
+            (map (lambda (machine)
+                   (mlet %store-monad
+                       ((state (provision-machine machine)))
+                     (return (list machine state))))
+                 (deployment-machines deployment))))
+
+(define (spawn-deployment deployment)
+  (mlet %store-monad
+      ((states (provision-deployment deployment)))
+    (sequence %store-monad
+              (map (match-lambda
+                    ((machine state)
+                     (return* (boot-machine machine state))))
+                   states))))
+
+(define (perform-action action deployment)
+  (case action
+    ((build) (build-deployment deployment))
+    ((provision) (provision-deployment deployment))
+    ((spawn) (spawn-deployment deployment))))
+
+(define (guix-deploy . args)
+  (define (parse-sub-command-or-config arg result)
+    (cond
+     ((assoc-ref result 'config)
+      (leave (_ "~a: extraneous argument~%") arg))
+     ((assoc-ref result 'action)
+      (alist-cons 'config arg result))
+     (else
+      (let ((action (string->symbol arg)))
+        (case action
+          ((build provision spawn)
+           (alist-cons 'action action result))
+          (else (leave (_ "~a: unknown action~%") action)))))))
+
+  (with-error-handling
+    (let* ((opts (args-fold* args %options
+                             (lambda (opt name arg result)
+                               (leave (_ "~A: unrecognized option~%") name))
+                             parse-sub-command-or-config %default-options))
+           (action (assoc-ref opts 'action))
+           (deployment (primitive-load (assoc-ref opts 'config))))
+      (with-store store
+        (run-with-store store
+          (mbegin %store-monad
+            (set-build-options-from-command-line* opts)
+            (perform-action action deployment)))))))