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118 lines
4.2 KiB
Scheme
118 lines
4.2 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2016, 2017 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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;;; This program replicates the behavior of Hydra's 'hydra-eval-guile-job'.
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;;; It evaluates the Hydra job defined by the program passed as its first
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;;; arguments and outputs an sexp of the jobs on standard output.
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(use-modules (guix store)
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(srfi srfi-19)
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(ice-9 match)
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(ice-9 pretty-print)
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(ice-9 format))
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(define %user-module
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;; Hydra user module.
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(let ((m (make-module)))
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(beautify-user-module! m)
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m))
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(cond-expand
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(guile-2.2
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;; Guile 2.2.2 has a bug whereby 'time-monotonic' objects have seconds and
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;; nanoseconds swapped (fixed in Guile commit 886ac3e). Work around it.
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(define time-monotonic time-tai))
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(else #t))
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(define (call-with-time thunk kont)
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"Call THUNK and pass KONT the elapsed time followed by THUNK's return
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values."
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(let* ((start (current-time time-monotonic))
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(result (call-with-values thunk list))
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(end (current-time time-monotonic)))
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(apply kont (time-difference end start) result)))
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(define (call-with-time-display thunk)
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"Call THUNK and write to the current output port its duration."
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(call-with-time thunk
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(lambda (time . results)
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(format #t "~,3f seconds~%"
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(+ (time-second time)
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(/ (time-nanosecond time) 1e9)))
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(apply values results))))
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(define (assert-valid-job job thing)
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"Raise an error if THING is not an alist with a valid 'derivation' entry.
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Otherwise return THING."
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(unless (and (list? thing)
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(and=> (assoc-ref thing 'derivation)
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(lambda (value)
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(and (string? value)
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(string-suffix? ".drv" value)))))
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(error "job did not produce a valid alist" job thing))
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thing)
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;; Without further ado...
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(match (command-line)
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((command file)
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;; Load FILE, a Scheme file that defines Hydra jobs.
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(let ((port (current-output-port)))
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(save-module-excursion
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(lambda ()
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(set-current-module %user-module)
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(primitive-load file)))
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(with-store store
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;; Make sure we don't resort to substitutes.
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(set-build-options store
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#:use-substitutes? #f
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#:substitute-urls '())
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;; Grafts can trigger early builds. We do not want that to happen
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;; during evaluation, so use a sledgehammer to catch such problems.
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(set! build-things
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(lambda (store . args)
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(format (current-error-port)
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"error: trying to build things during evaluation!~%")
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(format (current-error-port)
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"'build-things' arguments: ~s~%" args)
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(exit 1)))
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;; Call the entry point of FILE and print the resulting job sexp.
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(pretty-print
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(match ((module-ref %user-module 'hydra-jobs) store '())
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(((names . thunks) ...)
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(map (lambda (job thunk)
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(format (current-error-port) "evaluating '~a'... " job)
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(force-output (current-error-port))
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(cons job
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(assert-valid-job job
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(call-with-time-display thunk))))
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names thunks)))
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port))))
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((command _ ...)
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(format (current-error-port) "Usage: ~a FILE
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Evaluate the Hydra jobs defined in FILE.~%"
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command)
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(exit 1)))
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;;; Local Variables:
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;;; eval: (put 'call-with-time 'scheme-indent-function 1)
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;;; End:
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