[install] in .github/workflows add an archiver.py script as suggested…

… by Olivier to create a release info.dat file

.github/workflows/archiver.py

@@ -0,0 +1,35 @@
+#!/bin/bash
+# Copyright (C) 2020-2024 CERN and UCLouvain.
+# Licensed under the GNU Lesser General Public License (version 3 or later).
+# Created by: O. Mattelaer (Sep 2024) for the MG5aMC CUDACPP plugin.
+# Further modified by: A. Valassi (2024) for the MG5aMC CUDACPP plugin.
+
+import subprocess
+import sys
+
+def get_all_tags():
+    out = subprocess.check_output(['git', 'tag']).decode()
+    return out.split('\n')
+
+def get_supported_versions(tags):
+    PREFIX = 'TEST_cudacpp_for'
+    SUFFIX = '_latest'
+    versions = [ t[len(PREFIX):-len(SUFFIX)] for t in tags if t.startswith(PREFIX) and t.endswith(SUFFIX)]
+    versions = set(versions)
+    return versions
+
+def create_info_file(path, versions):
+    line = "%(version)s https://github.com/valassi/madgraph4gpu/releases/download/TEST_cudacpp_for%(version)s_latest/cudacpp.tar.gz\n"
+    fsock = open(path, 'w')
+    for v in versions:
+        fsock.write(line%{'version':v})
+
+if "__main__" == __name__:
+    if len(sys.argv) != 2:
+        print('Usage: python3 %s <filename>'%sys.argv[0])
+        sys.exit(1)
+    tags = get_all_tags()
+    print(tags)
+    versions = get_supported_versions(tags)
+    print(versions)
+    create_info_file(sys.argv[1], versions)