Add support for license.text

Co-authored-by: Thomas Kluyver <[email protected]>

flit_core/flit_core/config.py

@@ -612,7 +612,9 @@ def read_pep621_metadata(proj, path) -> LoadedConfig:
                     raise ConfigError(f"License file {license_f} does not exist")
                 license_files.add(license_tbl['file'])
             elif 'text' in license_tbl:
-                pass
+                license = license_tbl['text']
+                # TODO Normalize license if it's a valid SPDX expression
+                md_dict['license'] = license
             else:
                 raise ConfigError(
                     "file or text field required in [project.license] table"

flit_core/tests_core/test_config.py

@@ -208,6 +208,19 @@ def test_bad_pep621_readme(readme, err_match):
         config.read_pep621_metadata(proj, samples_dir / 'pep621' / 'pyproject.toml')
 
 
+@pytest.mark.parametrize(('value', 'license'), [
+    # Accept any string in project.license.text
+    ({"text": "mit"}, "mit"),
+    ({"text": "Apache Software License"}, "Apache Software License"),
+])
+def test_license_text(value, license):
+    proj = {
+        'name': 'module1', 'version': '1.0', 'description': 'x', 'license': value
+    }
+    info = config.read_pep621_metadata(proj, samples_dir / 'pep621' / 'pyproject.toml')
+    assert info.metadata['license'] == license
+
+
 @pytest.mark.parametrize(('value', 'license_expression'), [
     # Accept and normalize valid SPDX expressions for 'license = ...'
     ("mit",  "MIT"),