feat(cli): add debug tags command

Author: abn

docs/cli.md

@@ -305,6 +305,25 @@ Without `--` this command will fail if `${GITLAB_JOB_TOKEN}` starts with a hyphe
 * `--local`: Set/Get settings that are specific to a project (in the local configuration file `poetry.toml`).
 * `--migrate`: Migrate outdated configuration settings.
 
+## debug
+
+The `debug` command groups subcommands that are useful for, as the name suggests, debugging issues you might have
+when using Poetry with your projects.
+
+### debug info
+
+The `debug info` command shows debug information about Poetry and your project's virtual environment.
+
+### debug resolve
+
+The `debug resolve` command helps when debugging dependency resolution issues. The command attempts to resolve your
+dependencies and list the chosen packages and versions.
+
+### debug tags
+
+The `debug tags` command is useful when you want to see the supported packaging tags for your project's active
+virtual environment. This is useful when Poetry cannot install any known binary distributions for a dependency.
+
 ## env
 
 The `env` command groups subcommands to interact with the virtualenvs

src/poetry/console/application.py

@@ -75,6 +75,7 @@ def _load() -> Command:
     # Debug commands
     "debug info",
     "debug resolve",
+    "debug tags",
     # Env commands
     "env activate",
     "env info",

src/poetry/console/commands/debug/tags.py

@@ -0,0 +1,17 @@
+from __future__ import annotations
+
+from poetry.console.commands.env_command import EnvCommand
+
+
+class DebugTagsCommand(EnvCommand):
+    name = "debug tags"
+    description = "Shows compatible tags for your project's current active environment."
+
+    def handle(self) -> int:
+        for tag in self.env.get_supported_tags():
+            self.io.write_line(
+                f"<c1>{tag.interpreter}</>"
+                f"-<c2>{tag.abi}</>"
+                f"-<fg=yellow;options=bold>{tag.platform}</>"
+            )
+        return 0