galaxy: Add license_file to manifest directives (#79420)

* galaxy: Add license_file to manifest directives

* ag collection build: Test license handling

This adds tests to ensure that
    - REUSE licensing files: .reuse/dep5, LICENSES/*, anyfile.license
    - galaxy.yml license_file
are always included in the manifest.

6 files changed, 32 insertions, 10 deletions

diff --git a/changelogs/fragments/79420-galaxy-manifest-license.yaml b/changelogs/fragments/79420-galaxy-manifest-license.yaml
new file mode 100644
index 0000000000..3c95cda425
--- /dev/null
+++ b/changelogs/fragments/79420-galaxy-manifest-license.yaml
@@ -0,0 +1,4 @@
+---
+minor_changes:
+  - galaxy - include ``license_file`` in the default manifest directives
+    (https://github.com/ansible/ansible/pull-request/79420)
diff --git a/lib/ansible/galaxy/collection/__init__.py b/lib/ansible/galaxy/collection/__init__.py
index 1a0720c0b9..ffeba77dea 100644
--- a/lib/ansible/galaxy/collection/__init__.py
+++ b/lib/ansible/galaxy/collection/__init__.py
@@ -479,6 +479,7 @@ def build_collection(u_collection_path, u_output_path, force):
         collection_meta['name'],  # type: ignore[arg-type]
         collection_meta['build_ignore'],  # type: ignore[arg-type]
         collection_meta['manifest'],  # type: ignore[arg-type]
+        collection_meta['license_file'],  # type: ignore[arg-type]
     )
 
     artifact_tarball_file_name = '{ns!s}-{name!s}-{ver!s}.tar.gz'.format(
@@ -1062,8 +1063,9 @@ def _make_entry(name, ftype, chksum_type='sha256', chksum=None):
     }
 
 
-def _build_files_manifest(b_collection_path, namespace, name, ignore_patterns, manifest_control):
-    # type: (bytes, str, str, list[str], dict[str, t.Any]) -> FilesManifestType
+def _build_files_manifest(b_collection_path, namespace, name, ignore_patterns,
+                          manifest_control, license_file):
+    # type: (bytes, str, str, list[str], dict[str, t.Any], t.Optional[str]) -> FilesManifestType
     if ignore_patterns and manifest_control is not Sentinel:
         raise AnsibleError('"build_ignore" and "manifest" are mutually exclusive')
 
@@ -1073,14 +1075,15 @@ def _build_files_manifest(b_collection_path, namespace, name, ignore_patterns, m
             namespace,
             name,
             manifest_control,
+            license_file,
         )
 
     return _build_files_manifest_walk(b_collection_path, namespace, name, ignore_patterns)
 
 
-def _build_files_manifest_distlib(b_collection_path, namespace, name, manifest_control):
-    # type: (bytes, str, str, dict[str, t.Any]) -> FilesManifestType
-
+def _build_files_manifest_distlib(b_collection_path, namespace, name, manifest_control,
+                                  license_file):
+    # type: (bytes, str, str, dict[str, t.Any], t.Optional[str]) -> FilesManifestType
     if not HAS_DISTLIB:
         raise AnsibleError('Use of "manifest" requires the python "distlib" library')
 
@@ -1124,6 +1127,9 @@ def _build_files_manifest_distlib(b_collection_path, namespace, name, manifest_c
             'recursive-include plugins */**.py */**.license',
         ])
 
+        if license_file:
+            directives.append(f'include {license_file}')
+
         plugins = set(l.package.split('.')[-1] for d, l in get_all_plugin_loaders())
         for plugin in sorted(plugins):
             if plugin in ('modules', 'module_utils'):
@@ -1585,6 +1591,7 @@ def install_src(collection, b_collection_path, b_collection_output_path, artifac
         collection_meta['namespace'], collection_meta['name'],
         collection_meta['build_ignore'],
         collection_meta['manifest'],
+        collection_meta['license_file'],
     )
 
     collection_output_path = _build_collection_dir(
diff --git a/test/integration/targets/ansible-galaxy-collection-cli/files/expected.txt b/test/integration/targets/ansible-galaxy-collection-cli/files/expected.txt
index 110009e385..6921829050 100644
--- a/test/integration/targets/ansible-galaxy-collection-cli/files/expected.txt
+++ b/test/integration/targets/ansible-galaxy-collection-cli/files/expected.txt
@@ -1,6 +1,11 @@
 MANIFEST.json
 FILES.json
 README.rst
+GPL
+LICENSES/
+LICENSES/MIT.txt
+.reuse/
+.reuse/dep5
 changelogs/
 docs/
 playbooks/
@@ -88,6 +93,7 @@ plugins/test/bar.yml
 plugins/test/baz.yaml
 plugins/test/test.py
 plugins/vars/bar.yml
+plugins/vars/bar.yml.license
 plugins/vars/baz.yaml
 plugins/vars/test.py
 roles/foo/
diff --git a/test/integration/targets/ansible-galaxy-collection-cli/files/galaxy.yml b/test/integration/targets/ansible-galaxy-collection-cli/files/galaxy.yml
index 8f0ada0b82..140bf2a73a 100644
--- a/test/integration/targets/ansible-galaxy-collection-cli/files/galaxy.yml
+++ b/test/integration/targets/ansible-galaxy-collection-cli/files/galaxy.yml
@@ -2,6 +2,7 @@ namespace: ns
 name: col
 version: 1.0.0
 readme: README.rst
+license_file: GPL
 authors:
     - Ansible
 manifest:
diff --git a/test/integration/targets/ansible-galaxy-collection-cli/files/make_collection_dir.py b/test/integration/targets/ansible-galaxy-collection-cli/files/make_collection_dir.py
index 913a6f79e8..60c43cc70f 100644
--- a/test/integration/targets/ansible-galaxy-collection-cli/files/make_collection_dir.py
+++ b/test/integration/targets/ansible-galaxy-collection-cli/files/make_collection_dir.py
@@ -5,8 +5,12 @@ paths = [
     'ns-col-1.0.0.tar.gz',
     'foo.txt',
     'README.rst',
+    'GPL',
+    'LICENSES/MIT.txt',
+    '.reuse/dep5',
     'artifacts/.gitkeep',
     'plugins/vars/bar.yml',
+    'plugins/vars/bar.yml.license',
     'plugins/vars/baz.yaml',
     'plugins/vars/test.py',
     'plugins/vars/docs.md',
diff --git a/test/units/galaxy/test_collection.py b/test/units/galaxy/test_collection.py
index 28a69b2814..fa319835fb 100644
--- a/test/units/galaxy/test_collection.py
+++ b/test/units/galaxy/test_collection.py
@@ -596,7 +596,7 @@ def test_build_ignore_files_and_folders(collection_input, monkeypatch):
         tests_file.write('random')
         tests_file.flush()
 
-    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel)
+    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel, None)
 
     assert actual['format'] == 1
     for manifest_entry in actual['files']:
@@ -632,7 +632,7 @@ def test_build_ignore_older_release_in_root(collection_input, monkeypatch):
             file_obj.write('random')
             file_obj.flush()
 
-    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel)
+    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel, None)
     assert actual['format'] == 1
 
     plugin_release_found = False
@@ -660,7 +660,7 @@ def test_build_ignore_patterns(collection_input, monkeypatch):
 
     actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection',
                                               ['*.md', 'plugins/action', 'playbooks/*.j2'],
-                                              Sentinel)
+                                              Sentinel, None)
     assert actual['format'] == 1
 
     expected_missing = [
@@ -711,7 +711,7 @@ def test_build_ignore_symlink_target_outside_collection(collection_input, monkey
     link_path = os.path.join(input_dir, 'plugins', 'connection')
     os.symlink(outside_dir, link_path)
 
-    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel)
+    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel, None)
     for manifest_entry in actual['files']:
         assert manifest_entry['name'] != 'plugins/connection'
 
@@ -735,7 +735,7 @@ def test_build_copy_symlink_target_inside_collection(collection_input):
 
     os.symlink(roles_target, roles_link)
 
-    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel)
+    actual = collection._build_files_manifest(to_bytes(input_dir), 'namespace', 'collection', [], Sentinel, None)
 
     linked_entries = [e for e in actual['files'] if e['name'].startswith('playbooks/roles/linked')]
     assert len(linked_entries) == 1