Store dependencies of each package in poetry.lock

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+## Changed
+
+- Dependencies of each package is now stored in `poetry.lock`.
+
 ### Fixed
 
 - Fixed the `add` command for packages with dots in their names.

poetry/console/commands/show.py

+from .command import Command
+
+
+class ShowCommand(Command):
+    """
+    Shows information about packages.
+
+    show
+        { package? : Package to inspect. }
+        { version? : Version to inspect. }
+    """
+
+    help = """The show command displays detailed information about a package, or
+lists all packages available."""

poetry/packages/dependency.py

@@ -5,6 +5,7 @@ class Dependency:
 
     def __init__(self, name, constraint, optional=False, category='main'):
         self._name = name.lower()
+        self._pretty_name = name
         try:
             self._constraint = VersionParser().parse_constraints(constraint)
         except ValueError:
@@ -28,7 +29,7 @@ class Dependency:
 
     @property
     def pretty_name(self):
-        return '{} ({})'.format(self._name, self.pretty_constraint)
+        return self._pretty_name
 
     @property
     def category(self):
@@ -53,7 +54,7 @@ class Dependency:
         return hash((self._name, self._pretty_constraint))
 
     def __str__(self):
-        return self.pretty_name
+        return f'{self._pretty_name} ({self._pretty_constraint})'
 
     def __repr__(self):
-        return '<Dependency {}>'.format(self.pretty_name)
+        return f'<Dependency {str(self)}>'

poetry/packages/locker.py

@@ -93,6 +93,9 @@ class Locker:
             package.hashes = lock_data['metadata']['hashes'][info['name']]
             package.python_versions = info['python-versions']
 
+            for dep_name, constraint in info.get('dependencies', {}).items():
+                package.add_dependency(dep_name, constraint)
+
             if 'source' in info:
                 package.source_type = info['source']['type']
                 package.source_url = info['source']['url']
@@ -173,6 +176,13 @@ class Locker:
         return locked
 
     def _dump_package(self, package: 'poetry.packages.Package') -> dict:
+        dependencies = {}
+        for dependency in package.requires:
+            if dependency.is_optional():
+                continue
+
+            dependencies[dependency.pretty_name] = dependency.pretty_constraint
+
         data = {
             'name': package.pretty_name,
             'version': package.pretty_version,
@@ -181,6 +191,7 @@ class Locker:
             'python-versions': package.python_versions,
             'platform': package.platform,
             'hashes': package.hashes,
+            'dependencies': dependencies
         }
 
         if package.source_type:

tests/installation/fixtures/with-sub-dependencies.test

+[[package]]
+name = "A"
+version = "1.0"
+category = "main"
+optional = false
+python-versions = "*"
+platform = "*"
+
+[package.dependencies]
+D = "^1.0"
+
+[[package]]
+name = "B"
+version = "1.1"
+category = "main"
+optional = false
+python-versions = "*"
+platform = "*"
+
+[package.dependencies]
+C = "~1.2"
+
+[[package]]
+name = "C"
+version = "1.2"
+category = "main"
+optional = false
+python-versions = "*"
+platform = "*"
+
+[[package]]
+name = "D"
+version = "1.3"
+category = "main"
+optional = false
+python-versions = "*"
+platform = "*"
+
+[metadata]
+python-versions = "*"
+platform = "*"
+content-hash = "123456789"
+
+[metadata.hashes]
+A = []
+B = []
+C = []
+D = []

tests/installation/test_installer.py

@@ -45,6 +45,10 @@ class Locker(BaseLocker):
         return '123456789'
     
     def _write_lock_data(self, data) -> None:
+        for package in data['package']:
+            if not package['dependencies']:
+                del package['dependencies']
+
         self._written_data = data
 
 
@@ -188,3 +192,25 @@ def test_run_whitelist_remove(installer, locker, repo, package):
     expected = fixture('remove')
 
     assert locker.written_data == expected
+
+
+def test_add_with_sub_dependencies(installer, locker, repo, package):
+    package_a = get_package('A', '1.0')
+    package_b = get_package('B', '1.1')
+    package_c = get_package('C', '1.2')
+    package_d = get_package('D', '1.3')
+    repo.add_package(package_a)
+    repo.add_package(package_b)
+    repo.add_package(package_c)
+    repo.add_package(package_d)
+
+    package.add_dependency('A', '~1.0')
+    package.add_dependency('B', '^1.0')
+
+    package_a.add_dependency('D', '^1.0')
+    package_b.add_dependency('C', '~1.2')
+
+    installer.run()
+    expected = fixture('with-sub-dependencies')
+
+    assert locker.written_data == expected