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#!/bin/sh
# -*- scheme -*-
GUILE_LOAD_PATH="$1"
export GUILE_LOAD_PATH
exec ${GUILE:-@GUILE@} --no-auto-compile -e main -s "$0" "$@"
!#
;;;; evaluate - convert a specification to a job list
;;; Copyright © 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;;
;;; This file is part of Cuirass.
;;;
;;; Cuirass 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.
;;;
;;; Cuirass 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 Cuirass. If not, see <http://www.gnu.org/licenses/>.
(use-modules (ice-9 format)
(ice-9 match)
(ice-9 pretty-print)
(guix store)
(srfi srfi-19))
(define-syntax-rule (with-directory-excursion dir body ...)
"Run BODY with DIR as the process's current directory."
(let ((init (getcwd)))
(dynamic-wind
(λ () (chdir dir))
(λ () body ...)
(λ () (chdir init)))))
(define (call-with-time thunk kont)
"Call THUNK and pass KONT the elapsed time followed by THUNK's return
value."
(let* ((start (current-time time-monotonic))
(result (thunk))
(end (current-time time-monotonic)))
(kont (time-difference end start) result)))
(define (call-with-time-display thunk)
"Call THUNK and write to the current output port its duration."
(call-with-time thunk
(λ (time result)
(let ((duration (+ (time-second time)
(/ (time-nanosecond time) 1e9))))
(format (current-error-port) "evaluate '~A': ~,3f seconds~%"
(assq-ref result #:job-name)
duration)
(acons #:duration duration result)))))
(define* (main #:optional (args (command-line)))
(match args
((command load-path cachedir specstr)
;; Load FILE, a Scheme file that defines Hydra jobs.
(let* ((%user-module (make-fresh-user-module))
(spec (eval-string specstr %user-module))
(stdout (current-output-port))
(stderr (current-error-port)))
(save-module-excursion
(λ ()
(set-current-module %user-module)
(with-directory-excursion
(string-append cachedir "/" (assq-ref spec #:name))
(primitive-load (assq-ref spec #:file)))))
(with-store store
;; Make sure we don't resort to substitutes.
(set-build-options store #:use-substitutes? #f #:substitute-urls '())
;; Grafts can trigger early builds. We do not want that to happen
;; during evaluation, so use a sledgehammer to catch such problems.
(set! build-things
(λ (store . args)
(display "error: trying to build things during evaluation!~%"
stderr)
(format stderr "'build-things' arguments: ~S~%" args)
(exit 1)))
;; Call the entry point of FILE and print the resulting job sexp.
(pretty-print
(let* ((proc (module-ref %user-module 'hydra-jobs) )
(thunks (proc store (assq-ref spec #:arguments))))
(map (λ (thunk)
(call-with-time-display thunk))
thunks))
stdout))))
((command _ ...)
(format (current-error-port) "Usage: ~A FILE
Evaluate the Hydra jobs defined in FILE.~%"
command)
(exit 1))))
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