feat: started with uvx upgrade

src/uvx/cli.py

@@ -7,7 +7,6 @@
 from pathlib import Path
 from typing import Optional
 
-import plumbum  # type: ignore
 import rich
 import typer
 from typer import Context
@@ -23,6 +22,7 @@
     reinstall_package,
     run_command,
     uninstall_package,
+    upgrade_package,
 )
 from .metadata import Metadata
 
@@ -36,6 +36,11 @@ def install(package_name: str, force: bool = False, python: str = ""):
     install_package(package_name, python=python, force=force)
 
 
+@app.command(name="upgrade")
+@app.command(name="update")
+def upgrade(package_name: str, force: bool = False):
+    upgrade_package(package_name, force=force)
+
 @app.command(name="remove")
 @app.command(name="uninstall")
 def uninstall(package_name: str, force: bool = False):
@@ -128,8 +133,6 @@ def runpython(venv: str, ctx: Context):
         subprocess.run([python, *ctx.args])  # nosec
 
 
-# upgrade
-
 # self-upgrade (uv and uvx)
 
 # inject

src/uvx/core.py

@@ -195,6 +195,23 @@ def remove_dir(path: Path):
     if path.exists():
         shutil.rmtree(path)
 
+def upgrade_package(package_name: str, force: bool = False):
+    # run `uv pip install --upgrade package` with requested install spec (version, extras, injected)
+    # if --force is used, the previous version is ignored.
+    print('upgrade', package_name)
+
+    spec_metadata = collect_metadata(package_name)
+
+    workdir = ensure_local_folder()
+    venv = workdir / "venvs" / spec_metadata.name
+
+    if not venv.exists():
+        rich.print(
+            f"No virtualenv for '{package_name}', stopping. Use '--force' to remove an executable with that name anyway.",
+            file=sys.stderr,
+        )
+        exit(1)
+
 
 def uninstall_package(package_name: str, force: bool = False):
     """