From e1ea49675eb84704896623899612e489740ace98 Mon Sep 17 00:00:00 2001
From: Arun Isaac
Date: Mon, 17 Nov 2025 02:16:25 +0000
Subject: guix: Add G-expressions to build release tarball.

---
 .guix/ravanan-release.scm | 71 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 .guix/ravanan-release.scm

diff --git a/.guix/ravanan-release.scm b/.guix/ravanan-release.scm
new file mode 100644
index 0000000..98fe157
--- /dev/null
+++ b/.guix/ravanan-release.scm
@@ -0,0 +1,71 @@
+;;; ravanan --- High-reproducibility CWL runner powered by Guix
+;;; Copyright © 2025 Arun Isaac <arunisaac@systemreboot.net>
+;;;
+;;; This file is part of ravanan.
+;;;
+;;; ravanan 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.
+;;;
+;;; ravanan 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 ravanan.  If not, see <https://www.gnu.org/licenses/>.
+
+(define-module (ravanan-release)
+  #:use-module ((gnu packages base) #:select (gnu-make))
+  #:use-module ((gnu packages compression) #:select (lzip))
+  #:use-module ((gnu packages version-control) #:select (git-minimal))
+  #:use-module (guix gexp)
+  #:use-module (ice-9 match)
+  #:use-module (ice-9 popen)
+  #:use-module (srfi srfi-26)
+  #:use-module (rnrs io ports))
+
+(define (call-with-input-pipe command proc)
+  "Call @var{proc} with input pipe to @var{command}. @var{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 version
+  (call-with-input-pipe (list "git" "tag" "--sort=-taggerdate" "--list" "v*")
+    (lambda (port)
+      (let ((line (get-line port)))
+        (if (eof-object? line)
+            ;; If there are no tags, assume first version.
+            "0.1.0"
+            (substring line (string-length "v")))))))
+
+(define ravanan-git-repo
+  (local-file "../.git"
+              "ravanan-git-repo"
+              #:recursive? #t))
+
+(define ravanan-release-gexp
+  (with-imported-modules '((guix build utils))
+    #~(begin
+        (use-modules (guix build utils))
+
+        (set-path-environment-variable
+         "PATH" '("bin") '(#$git-minimal #$gnu-make #$lzip))
+        (invoke "git" "clone" (string-append "file://" #$ravanan-git-repo) (getcwd))
+        (invoke "make" "dist" #$(string-append "version=" version))
+        (copy-file #$(string-append "ravanan-" version ".tar.lz")
+                   #$output))))
+
+(define ravanan-release
+  (computed-file (string-append "ravanan-" version ".tar.lz")
+                 ravanan-release-gexp))
+
+ravanan-release
-- 
cgit 1.4.1