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;;; guix.scm --- Get the most recent fully evaluated commit from the build farm
;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com>
;; Emacs-Guix-Misc 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.
;;
;; Guix-Latest-Eval 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 Guix-Latest-Eval.
;; If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file contains Guix package for development version of
;; Guix-Latest-Eval. To build or install, run:
;;
;; guix build --file=guix.scm
;; guix package --install-from-file=guix.scm
;;; Code:
(use-modules ((guix licenses) #:prefix license:)
(guix build utils)
(guix build-system trivial)
(guix gexp)
(guix git-download)
(guix packages)
(gnu packages bash)
(gnu packages curl)
(ice-9 popen)
(ice-9 rdelim))
(define %source-dir (dirname (current-filename)))
(define (git-output . args)
"Execute 'git ARGS ...' command and return its output without trailing
newspace."
(with-directory-excursion %source-dir
(let* ((port (apply open-pipe* OPEN_READ "git" args))
(output (read-string port)))
(close-port port)
(string-trim-right output #\newline))))
(define (current-commit)
(git-output "log" "-n" "1" "--pretty=format:%H"))
(let ((commit (current-commit)))
(package
(name "guix-latest-eval")
(version (string-append "0.0.1" "-" (string-take commit 7)))
(source (local-file %source-dir
#:recursive? #t
#:select? (git-predicate %source-dir)))
(build-system trivial-build-system)
(inputs
`(("bash" ,bash)
("curl" ,curl)))
(arguments
`(#:modules
((guix build utils))
#:builder
(begin
(use-modules (guix build utils))
(copy-recursively (assoc-ref %build-inputs "source") ".")
(setenv "PATH" (string-append
(assoc-ref %build-inputs "bash") "/bin" ":"
(assoc-ref %build-inputs "curl") "/bin" ":"))
(substitute* "guix-latest-eval"
(("/bin/sh") (which "bash"))
(("curl") (which "curl")))
(let ((directory "bin"))
(install-file "guix-latest-eval"
(string-append %output "/" directory)))
#t)))
(home-page #f)
(synopsis "Get the most recent fully evaluated commit from the build farm")
(description
"This package provides a Curl script to get the most recent fully
evaluated commit from the build farm.")
(license license:gpl3+)))
;;; guix.scm ends here
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