only install uv if needed

Author: s1liconcow

repogauge/runner/container_exec.py

@@ -272,6 +272,8 @@ def _local_repo_setup_commands(test_spec) -> tuple[str, ...]:
             continue
         if command == f"chmod -R 777 {DOCKER_WORKDIR}":
             command = f"chmod -R a+rwX {DOCKER_WORKDIR}"
+        if command == "pip install uv":
+            command = "command -v uv >/dev/null || pip install uv"
         commands.append(command)
     if not commands:
         return ()
@@ -618,7 +620,7 @@ def _adapter_setup_commands(adapter_spec: Mapping[str, object]) -> tuple[str, ..
 
     install_text = "\n".join([*pre_install, *install, *build])
     if "uv" in install_text and "pip install uv" not in pre_install:
-        pre_install = ["pip install uv", *pre_install]
+        pre_install = ["command -v uv >/dev/null || pip install uv", *pre_install]
 
     commands: list[str] = [
         f"git config --global --add safe.directory {shlex.quote(DOCKER_WORKDIR)} || true",

tests/unit/test_container_exec.py

@@ -88,7 +88,7 @@ def test_local_repo_setup_commands_strip_remote_clone_bootstrap() -> None:
         "git config --global --add safe.directory /testbed || true",
         "chmod -R a+rwX /testbed",
         "cd /testbed",
-        "pip install uv",
+        "command -v uv >/dev/null || pip install uv",
         "uv sync --active --all-groups",
     )
 
@@ -104,7 +104,7 @@ def test_adapter_setup_commands_install_uv_when_needed() -> None:
         "git config --global --add safe.directory /testbed || true",
         "chmod -R 777 /testbed || true",
         "cd /testbed",
-        "pip install uv",
+        "command -v uv >/dev/null || pip install uv",
         "uv sync --active --all-groups",
         "python -m pip install pytest",
     )