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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020 raingloom <raingloom@riseup.net>
;;;
;;; 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 build chicken-build-system)
#:use-module ((guix build gnu-build-system) #:prefix gnu:)
#:use-module (guix build utils)
#:use-module (ice-9 match)
#:use-module (ice-9 ftw)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (rnrs io ports)
#:use-module (rnrs bytevectors)
#:export (%standard-phases
chicken-build))
;; CHICKEN_EGG_CACHE is where sources are fetched and binaries are built
;; CHICKEN_INSTALL_REPOSITORY is where dependencies are looked up
;; its first component is also where new eggs are installed.
;; TODO: deduplicate with go-build-system.scm ?
;; TODO: the binary version should be defined in one of the relevant modules
;; instead of being hardcoded everywhere. Tried to do that but got undefined
;; variable errors.
(define (chicken-package? name)
(string-prefix? "chicken-" name))
(define* (setup-chicken-environment #:key inputs outputs #:allow-other-keys)
(setenv "CHICKEN_INSTALL_REPOSITORY"
(string-concatenate
;; see TODO item about binary version above
(append (list (assoc-ref outputs "out") "/var/lib/chicken/11/")
(let ((oldenv (getenv "CHICKEN_INSTALL_REPOSITORY")))
(if oldenv
(list ":" oldenv)
'())))))
(setenv "CHICKEN_EGG_CACHE" (getcwd))
#t)
;; This is copied from go-build-system.scm so it could probably be simplified.
;; I used it because the source of the egg needs to be unpacked into a directory
;; that is named after the egg and I knew that the go build system does that.
(define* (unpack #:key source egg-name unpack-path #:allow-other-keys)
"Relative to $CHICKEN_EGG_CACHE, unpack SOURCE in UNPACK-PATH, or EGG-NAME
when UNPACK-PATH is unset. If the SOURCE archive has a single top level
directory, it is stripped so that the sources appear directly under UNPACK-PATH.
When SOURCE is a directory, copy its content into UNPACK-PATH instead of
unpacking."
(define (unpack-maybe-strip source dest)
(let* ((scratch-dir (string-append (or (getenv "TMPDIR") "/tmp")
"/scratch-dir"))
(out (mkdir-p scratch-dir)))
(with-directory-excursion scratch-dir
(if (string-suffix? ".zip" source)
(invoke "unzip" source)
(invoke "tar" "-xvf" source))
(let ((top-level-files (remove (lambda (x)
(member x '("." "..")))
(scandir "."))))
(match top-level-files
((top-level-file)
(when (file-is-directory? top-level-file)
(copy-recursively top-level-file dest #:keep-mtime? #t)))
(_
(copy-recursively "." dest #:keep-mtime? #t)))))
(delete-file-recursively scratch-dir)))
(when (string-null? egg-name)
(display "WARNING: The egg name is unset.\n"))
(when (string-null? unpack-path)
(set! unpack-path egg-name))
(let ((dest (string-append (getenv "CHICKEN_EGG_CACHE") "/" unpack-path)))
(mkdir-p dest)
(if (file-is-directory? source)
(copy-recursively source dest #:keep-mtime? #t)
(unpack-maybe-strip source dest)))
#t)
(define* (build #:key egg-name #:allow-other-keys)
"Build the Chicken egg named by EGG-NAME"
(invoke "chicken-install" "-cached" "-no-install" egg-name))
(define* (install #:key egg-name #:allow-other-keys)
"Install the already built egg named by EGG-NAME"
(invoke "chicken-install" "-cached" egg-name))
(define* (check #:key egg-name tests? #:allow-other-keys)
"Build and run tests for the Chicken egg EGG-NAME"
;; there is no "-test-only" option, but we've already run install
;; so this just runs tests.
;; i think it's a fair assumption that phases won't be reordered.
(setenv "CHICKEN_REPOSITORY_PATH"
(string-append (getenv "CHICKEN_INSTALL_REPOSITORY")
":"
(getenv "CHICKEN_REPOSITORY_PATH")))
(when tests?
(invoke "chicken-install" "-cached" "-test" "-no-install" egg-name)))
(define* (stamp-egg-version #:key egg-name name #:allow-other-keys)
"Check if EGG-NAME.egg contains version information and add some if not."
(let* ((filename (string-append egg-name "/" egg-name ".egg"))
(egg-info (call-with-input-file filename read))
(ver? (find (lambda (i) (eqv? (car i) 'version)) egg-info))
(ver (substring name (1+ (string-rindex name #\-)))))
(when (not ver?)
(make-file-writable filename)
(call-with-output-file filename
(lambda (f) (write (cons `(version ,ver) egg-info) f))))))
;; It doesn't look like Chicken generates any unnecessary references.
;; So we don't have to remove them either. Nice.
(define %standard-phases
(modify-phases gnu:%standard-phases
(replace 'unpack unpack)
(delete 'bootstrap)
(delete 'configure)
(delete 'patch-generated-file-shebangs)
(add-before 'unpack 'setup-chicken-environment setup-chicken-environment)
(add-before 'build 'stamp-egg-version stamp-egg-version)
(replace 'build build)
(delete 'check)
(replace 'install install)
(add-after 'install 'check check)))
(define* (chicken-build #:key inputs (phases %standard-phases)
#:allow-other-keys #:rest args)
"Build the given Chicken package, applying all of PHASES in order."
(apply gnu:gnu-build #:inputs inputs #:phases phases args))
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