feat(uninject): implemented eject

src/uvx/cli.py

@@ -4,6 +4,7 @@
 import os
 import subprocess  # nosec
 import sys
+import typing
 from datetime import datetime
 from pathlib import Path
 from typing import Annotated
@@ -112,7 +113,6 @@ def uninstall(
     output(uninstall_package(package_name, force=force).map(lambda version: f"🗑️ {package_name}{version} removed!"))
 
 
-
 @app.command()
 def uninstall_all(
     force: Annotated[
@@ -128,6 +128,7 @@ def uninstall_all(
     for venv_name, _ in list_packages():
         uninstall(venv_name, force=force)
 
+
 @app.command()
 def reinstall(
     package: str,
@@ -163,6 +164,8 @@ def reinstall_all(
     for venv_name, _ in list_packages():
         reinstall(venv_name, python=python, force=force, without_injected=without_injected, no_cache=no_cache)
 
+
+@app.command()
 def inject(into: str, package_specs: list[str]):
     """Install additional packages to a virtual environment managed by uvx."""
     output(
@@ -172,13 +175,14 @@ def inject(into: str, package_specs: list[str]):
         )
     )
 
-@app.command(name='eject')
-@app.command(name='uninject')
-def uninject(outof: str, package_specs: list[str]):
-        output(
+
+@app.command(name="eject")
+@app.command(name="uninject")
+def uninject(outof: str, package_specs: typing.Annotated[list[str], typer.Argument()] = None):
+    output(
         eject_packages(
             outof,
-            set(package_specs),
+            set(package_specs or []),
         )
     )
 
@@ -312,6 +316,7 @@ def list_venvs(short: bool = False, verbose: bool = False, json: bool = False):
         else:
             _list_normal(name, metadata, verbose=verbose)
 
+
 # todo: run
 
 

src/uvx/core.py

@@ -267,9 +267,41 @@ def inject_packages(into: str, package_specs: set[str]) -> Result[str, Exception
 
     return Ok(f"💉 Injected {package_specs} into {meta.name}.")  # :needle:
 
-def eject_packages(outouf: str, package_specs: set[str]) -> Result[str, Exception]:
-    print(f'remove {package_specs} from {outouf}')
-    return Ok('-')
+
+def eject_packages(outof: str, package_specs: set[str]) -> Result[str, Exception]:
+    """Uninstall extra libraries into a package-specific venv."""
+    match collect_metadata(outof):
+        case Err(e):
+            return Err(e)
+        case Ok(meta):
+            # just bind meta
+            ...
+
+    workdir = ensure_local_folder()
+    venv = workdir / "venvs" / meta.name
+
+    if not venv.exists():
+        return Err(ValueError(f"'{meta.name}' was not previously installed. Please run 'uvx install {outof}' first."))
+
+    # after getting the right venv, load actual metadata (with fallback to previous emptier metadata):
+    meta = read_metadata(venv).unwrap_or(meta)
+
+    if not package_specs:
+        package_specs = meta.injected
+        if not package_specs:
+            return Err(ValueError(f"⚠️ No previous packages to uninject."))
+
+    with virtualenv(venv), exit_on_pb_error():
+        try:
+            animate(uv("pip", "uninstall", *package_specs), text=f"ejecting {package_specs}")
+        except plumbum.ProcessExecutionError as e:
+            return Err(e)
+
+    meta.injected = (meta.injected or set()) - package_specs
+    store_metadata(meta, venv)
+
+    return Ok(f"⏏️ Uninjected {package_specs} into {meta.name}.")  # :eject:
+
 
 def remove_dir(path: Path):
     """