do not remove --dev, revoke deprecation

docs/cli.md

@@ -448,6 +448,7 @@ about dependency groups.
 ### Options
 
 * `--group (-G)`: The group to add the dependency to.
+* `--dev (-D)`: Add package as development dependency. (shortcut for `-G dev`)
 * `--editable (-e)`: Add vcs/path dependencies as editable.
 * `--extras (-E)`: Extras to activate for the dependency. (multiple values allowed)
 * `--optional`: Add as an optional dependency to an extra.
@@ -480,6 +481,7 @@ about dependency groups.
 ### Options
 
 * `--group (-G)`: The group to remove the dependency from.
+* `--dev (-D)`: Removes a package from the development dependencies. (shortcut for `-G dev`)
 * `--dry-run` : Outputs the operations but will not execute anything (implicitly enables --verbose).
 * `--lock`: Do not perform operations (only update the lockfile).
 

src/poetry/console/commands/add.py

@@ -40,6 +40,11 @@ class AddCommand(InstallerCommand, InitCommand):
             flag=False,
             default=MAIN_GROUP,
         ),
+        option(
+            "dev",
+            "D",
+            "Add as a development dependency. (shortcut for '-G dev')",
+        ),
         option("editable", "e", "Add vcs/path dependencies as editable."),
         option(
             "extras",
@@ -122,7 +127,10 @@ def handle(self) -> int:
         from poetry.factory import Factory
 
         packages = self.argument("name")
-        group = self.option("group", self.default_group or MAIN_GROUP)
+        if self.option("dev"):
+            group = "dev"
+        else:
+            group = self.option("group", self.default_group or MAIN_GROUP)
 
         if self.option("extras") and len(packages) > 1:
             raise ValueError(

src/poetry/console/commands/remove.py

@@ -28,6 +28,12 @@ class RemoveCommand(InstallerCommand):
     ]
     options: ClassVar[list[Option]] = [
         option("group", "G", "The group to remove the dependency from.", flag=False),
+        option(
+            "dev",
+            "D",
+            "Remove a package from the development dependencies."
+            " (shortcut for '-G dev')",
+        ),
         option(
             "dry-run",
             None,
@@ -49,7 +55,11 @@ class RemoveCommand(InstallerCommand):
 
     def handle(self) -> int:
         packages = self.argument("packages")
-        group = self.option("group", self.default_group)
+
+        if self.option("dev"):
+            group = "dev"
+        else:
+            group = self.option("group", self.default_group)
 
         content: dict[str, Any] = self.poetry.file.read()
         project_content = content.get("project", {})

tests/console/commands/test_add.py

@@ -1099,6 +1099,35 @@ def test_add_creating_poetry_section_does_not_remove_existing_tools(
     assert pyproject["tool"]["foo"]["key"] == "value"
 
 
+def test_add_to_dev_section(app: PoetryTestApplication, tester: CommandTester) -> None:
+    tester.execute("cachy --dev")
+
+    expected = """\
+Using version ^0.2.0 for cachy
+
+Updating dependencies
+Resolving dependencies...
+
+Package operations: 2 installs, 0 updates, 0 removals
+
+  - Installing msgpack-python (0.5.6)
+  - Installing cachy (0.2.0)
+
+Writing lock file
+"""
+
+    assert tester.io.fetch_error() == ""
+    assert tester.io.fetch_output() == expected
+    assert isinstance(tester.command, InstallerCommand)
+    assert tester.command.installer.executor.installations_count == 2
+
+    pyproject: dict[str, Any] = app.poetry.file.read()
+    content = pyproject["tool"]["poetry"]
+
+    assert "cachy" in content["group"]["dev"]["dependencies"]
+    assert content["group"]["dev"]["dependencies"]["cachy"] == "^0.2.0"
+
+
 def test_add_should_not_select_prereleases(
     app: PoetryTestApplication, tester: CommandTester
 ) -> None: