Add a new option `pdm export --pyproject`

Close #190

news/190.feature

+Provide an option to export requirements from pyproject.toml

pdm/cli/commands/export.py

@@ -32,18 +32,35 @@ class Command(BaseCommand):
             "--output",
             help="Write output to the given file, or print to stdout if not given",
         )
+        parser.add_argument(
+            "-p",
+            "--pyproject",
+            action="store_true",
+            help="Read the list of packages from pyproject.toml",
+        )
 
     def handle(self, project: Project, options: argparse.Namespace) -> None:
         candidates = []
+        if options.pyproject:
+            options.hashes = False
         if options.default:
             # Don't include self candidate
-            temp = project.get_locked_candidates()
-            temp.pop(project.meta.name, None)
+            if options.pyproject:
+                temp = project.dependencies
+            else:
+                temp = project.get_locked_candidates()
+                temp.pop(project.meta.name, None)
             candidates.extend(temp.values())
         if options.dev:
-            candidates.extend(project.get_locked_candidates("dev").values())
+            if options.pyproject:
+                candidates.extend(project.dev_dependencies.values())
+            else:
+                candidates.extend(project.get_locked_candidates("dev").values())
         for section in options.sections:
-            candidates.extend(project.get_locked_candidates(section).values())
+            if options.pyproject:
+                candidates.extend(project.get_dependencies(section).values())
+            else:
+                candidates.extend(project.get_locked_candidates(section).values())
         content = FORMATS[options.format].export(project, candidates, options)
         if options.output:
             Path(options.output).write_text(content)

pdm/formats/requirements.py

@@ -100,7 +100,7 @@ def convert(project, filename):
 def export(project, candidates, options):
     lines = []
     for candidate in candidates:
-        req = candidate.req.as_line()
+        req = getattr(candidate, "req", candidate).as_line()
         lines.append(req)
         if options.hashes and candidate.hashes:
             for item in candidate.hashes.values():

tests/cli/test_cli.py

@@ -261,6 +261,7 @@ def test_export_to_requirements_txt(invoke, fixture_project):
     project = fixture_project("demo-package")
     requirements_txt = project.root / "requirements.txt"
     requirements_no_hashes = project.root / "requirements_simple.txt"
+    requirements_pyproject = project.root / "requirements.ini"
 
     result = invoke(["export"], obj=project)
     assert result.exit_code == 0
@@ -270,6 +271,10 @@ def test_export_to_requirements_txt(invoke, fixture_project):
     assert result.exit_code == 0
     assert result.output.strip() == requirements_no_hashes.read_text().strip()
 
+    result = invoke(["export", "--pyproject"], obj=project)
+    assert result.exit_code == 0
+    assert result.output.strip() == requirements_pyproject.read_text().strip()
+
     result = invoke(
         ["export", "-o", str(project.root / "requirements_output.txt")], obj=project
     )

tests/fixtures/projects/demo-package/requirements.ini

+flask
+--extra-index-url https://test.pypi.org/simple