Makefile: Add dist and distcheck targets.

* Makefile (GIT, GPG, LZIP, distribute_files, dist_archive): New
variables.
(.PHONY): Add dist and distcheck.
(dist, $(dist_archive), distcheck): New targets.
(%.asc): New pattern rule.
(clean): Clean $(dist_archive) and $(dist_archive).asc.
* build-aux/distcheck.scm: New file.

1 files changed, 63 insertions, 0 deletions

diff --git a/build-aux/distcheck.scm b/build-aux/distcheck.scm
new file mode 100644
index 0000000..4b08c66
--- /dev/null
+++ b/build-aux/distcheck.scm
@@ -0,0 +1,63 @@
+;;; kolam --- GraphQL implementation
+;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net>
+;;;
+;;; This file is part of kolam.
+;;;
+;;; kolam is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU Affero General Public License as
+;;; published by the Free Software Foundation; either version 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; kolam 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
+;;; Affero General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Affero General Public
+;;; License along with kolam.  If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(import (rnrs io ports)
+        (srfi srfi-26)
+        (ice-9 eval-string)
+        (ice-9 match)
+        (ice-9 popen)
+        (guix gexp)
+        (guix packages)
+        (guix scripts)
+        (guix store))
+
+(define (call-with-input-pipe command proc)
+  "Call PROC with input pipe to COMMAND. COMMAND is a list of program
+arguments."
+  (match command
+    ((prog args ...)
+     (let ((port #f))
+       (dynamic-wind
+         (lambda ()
+           (set! port (apply open-pipe* OPEN_READ prog args)))
+         (cut proc port)
+         (cut close-pipe port))))))
+
+(define (package-in-archive dist-archive)
+  "Return the package object in guix.scm of DIST-ARCHIVE."
+  (call-with-input-pipe (list "tar" "--extract" "--to-stdout"
+                              "--file" dist-archive
+                              (string-append
+                               (basename dist-archive ".tar.lz")
+                               "/guix.scm"))
+    (lambda (port)
+      (eval-string (get-string-all port)
+                   #:file (string-append (getcwd) "/guix.scm")))))
+
+(define (check-build dist-archive)
+  "Check if package in DIST-ARCHIVE builds correctly."
+  (run-with-store (open-connection)
+    (build-package
+     (package
+       (inherit (package-in-archive dist-archive))
+       (source (local-file dist-archive))))))
+
+(match (program-arguments)
+  ((_ dist-archive)
+   (check-build dist-archive)))