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;;; base.scm -- Cuirass base module
;;; Copyright © 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;;
;;; 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/>.
(define-module (cuirass base)
#:use-module (cuirass database)
#:use-module (cuirass utils)
#:use-module (gnu packages)
#:use-module (guix derivations)
#:use-module (guix store)
#:use-module (ice-9 format)
#:use-module (ice-9 popen)
#:use-module (ice-9 rdelim)
#:use-module (srfi srfi-19)
#:export (;; Procedures.
call-with-time-display
fetch-repository
compile
evaluate
build-packages
process-specs
set-guix-package-path!
;; Parameters.
%guix-package-path
%package-cachedir
%use-substitutes?))
(define %use-substitutes?
;; Define whether to use substitutes
(make-parameter #f))
(define %package-cachedir
;; Define to location of cache directory of this package.
(make-parameter (or (getenv "CUIRASS_CACHEDIR")
(string-append (or (getenv "HOME") ".")
"/.cache/cuirass"))
(λ (val)
(if (string? val)
val
(scm-error 'wrong-type-arg
"%package-cachedir" "Not a string: ~S" (list #f) #f)))))
(define (call-with-time thunk kont)
"Call THUNK and pass KONT the elapsed time followed by THUNK's return
values."
(let* ((start (current-time time-monotonic))
(result (call-with-values thunk list))
(end (current-time time-monotonic)))
(apply 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 (fetch-repository spec)
"Get the latest version of repository specified in SPEC. Clone repository
if required. Return the last commit ID on success, #f otherwise."
(define (current-commit)
(let* ((pipe (open-input-pipe "git log -n1"))
(log (read-string pipe))
(commit (cadr (string-split log char-set:whitespace))))
(close-pipe pipe)
commit))
(let ((cachedir (%package-cachedir)))
(or (file-exists? cachedir) (mkdir-p cachedir))
(with-directory-excursion cachedir
(let ((name (assq-ref spec #:name))
(url (assq-ref spec #:url))
(branch (assq-ref spec #:branch))
(commit (assq-ref spec #:commit))
(tag (assq-ref spec #:tag)))
(and (or (file-exists? name)
(zero? (system* "git" "clone" url name)))
(with-directory-excursion name
(and (zero? (system* "git" "fetch"))
(zero? (system* "git" "reset" "--hard"
(or tag
commit
(string-append "origin/" branch))))
(current-commit))))))))
(define (compile dir)
;; Required for fetching Guix bootstrap tarballs.
"Compile files in repository in directory DIR."
(with-directory-excursion dir
(or (file-exists? "configure") (system* "./bootstrap"))
(or (file-exists? "Makefile")
(system* "./configure" "--localstatedir=/var"))
(zero? (system* "make" "-j" (number->string (current-processor-count))))))
(define (evaluate store db spec)
"Evaluate and build package derivations. Return a list of jobs."
(let* ((port (open-pipe* OPEN_READ
"evaluate"
(string-append (%package-cachedir) "/"
(assq-ref spec #:name) "/"
(assq-ref spec #:load-path))
(%guix-package-path)
(%package-cachedir)
(object->string spec)
(%package-database)))
(jobs (read port)))
(close-pipe port)
jobs))
(define (build-packages store db jobs)
"Build JOBS and return a list of Build results."
(define (build job)
(let* ((name (assq-ref job #:job-name))
(drv (assq-ref job #:derivation))
(eval-id (assq-ref job #:eval-id))
(success? #t)
(error-log (string-append (%package-cachedir) "/"
name ".log")))
(simple-format #t "building ~A...\n" drv)
(let ((log (call-with-output-string
(λ (port)
(parameterize ((current-build-output-port port))
(catch 'srfi-34
(λ ()
(build-derivations store (list drv)))
(λ (key . args)
(set! success? #f)
(pk "kets key:" key "args:" args))))))))
(when (not success?)
(with-output-to-file error-log
(λ () (display log)))
(simple-format #t "build failed: ~a\n" error-log))
(let* ((output (and success? (derivation-path->output-path drv)))
(log (if success? (log-file store output) error-log))
(build `((#:derivation . ,drv)
(#:eval-id . ,eval-id)
(#:log . ,log)
(#:output . ,output))))
(db-add-build db build)
(simple-format #t "~A\n" output)
build))))
(map build jobs))
(define (process-specs db jobspecs)
"Evaluate and build JOBSPECS and store results in DB."
(define (process spec)
(let ((commit (fetch-repository spec))
(stamp (db-get-stamp db spec)))
(when commit
(unless (string=? commit stamp)
(unless (assq-ref spec #:no-compile?)
(compile (string-append (%package-cachedir) "/"
(assq-ref spec #:name))))
(with-store store
(let* ((spec* (acons #:current-commit commit spec))
(jobs (evaluate store db spec*)))
(unless (%use-substitutes?)
(set-build-options store #:use-substitutes? #f))
(build-packages store db jobs))))
(db-add-stamp db spec commit))))
(for-each process jobspecs))
;;;
;;; Guix package path.
;;;
(define %guix-package-path
;; Extension of package modules search path.
(make-parameter ""))
(define (set-guix-package-path! path)
"Use PATH to find custom packages not defined in (gnu packages ...)
namespace or not already present in current Guile load paths."
(%package-module-path (cons path (%package-module-path)))
(%patch-path (cons path (%patch-path)))
(set! %load-path (cons path %load-path))
(set! %load-compiled-path (cons path %load-compiled-path)))
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