From 576fe0906a4d91c45f84c38d3af3928af4133071 Mon Sep 17 00:00:00 2001
From: dannyward630 <djwarding888@gmail.com>
Date: Fri, 19 Jun 2026 01:00:32 +0200
Subject: [PATCH 1/2] fix(env): run local commands through bash

---
 src/minisweagent/environments/local.py | 11 +++++++----
 tests/environments/test_local.py       | 11 +++++++++++
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/minisweagent/environments/local.py b/src/minisweagent/environments/local.py
index 2b12d33ec..aff1eed92 100644
--- a/src/minisweagent/environments/local.py
+++ b/src/minisweagent/environments/local.py
@@ -14,6 +14,8 @@ class LocalEnvironmentConfig(BaseModel):
     cwd: str = ""
     env: dict[str, str] = {}
     timeout: int = 30
+    interpreter: list[str] = ["bash", "-lc"]
+    """Interpreter to use to execute commands. The command is appended as the final argument."""
 
 
 class LocalEnvironment:
@@ -26,7 +28,7 @@ def execute(self, action: dict, cwd: str = "", *, timeout: int | None = None) ->
         command = action.get("command", "")
         cwd = cwd or self.config.cwd or os.getcwd()
         try:
-            result = _run(command, cwd, os.environ | self.config.env, timeout or self.config.timeout)
+            result = _run(command, cwd, os.environ | self.config.env, timeout or self.config.timeout, self.config.interpreter)
             output = {"output": result.stdout, "returncode": result.returncode, "exception_info": ""}
         except Exception as e:
             raw_output = getattr(e, "output", None)
@@ -69,11 +71,12 @@ def serialize(self) -> dict:
         }
 
 
-def _run(command: str, cwd: str, env: dict[str, str], timeout: int) -> subprocess.CompletedProcess[str]:
+def _run(
+    command: str, cwd: str, env: dict[str, str], timeout: int, interpreter: list[str]
+) -> subprocess.CompletedProcess[str]:
     """Like subprocess.run, but kills the whole process group on timeout so no children are orphaned."""
     process = subprocess.Popen(
-        command,
-        shell=True,
+        [*interpreter, command],
         text=True,
         cwd=cwd,
         env=env,
diff --git a/tests/environments/test_local.py b/tests/environments/test_local.py
index 705c19a20..a9b83f7cc 100644
--- a/tests/environments/test_local.py
+++ b/tests/environments/test_local.py
@@ -19,6 +19,7 @@ def test_local_environment_config_defaults():
     assert config.cwd == ""
     assert config.env == {}
     assert config.timeout == 30
+    assert config.interpreter == ["bash", "-lc"]
 
 
 def test_local_environment_basic_execution():
@@ -262,3 +263,13 @@ def test_local_environment_shell_features():
     result = env.execute({"command": "echo $(echo 'nested')"})
     assert result["returncode"] == 0
     assert "nested" in result["output"]
+
+
+@pytest.mark.skipif(os.name == "nt", reason="requires bash")
+def test_local_environment_uses_bash_by_default():
+    """Test that the local environment supports bash-only syntax by default."""
+    env = LocalEnvironment()
+
+    result = env.execute({"command": "cat <(printf 'bash-only')"})
+    assert result["returncode"] == 0
+    assert result["output"] == "bash-only"

From a89dbbdadf726c36c4cd7d9f2c9d8cadffc180ea Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Thu, 18 Jun 2026 23:01:23 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 src/minisweagent/environments/local.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/minisweagent/environments/local.py b/src/minisweagent/environments/local.py
index aff1eed92..64ea4893c 100644
--- a/src/minisweagent/environments/local.py
+++ b/src/minisweagent/environments/local.py
@@ -28,7 +28,9 @@ def execute(self, action: dict, cwd: str = "", *, timeout: int | None = None) ->
         command = action.get("command", "")
         cwd = cwd or self.config.cwd or os.getcwd()
         try:
-            result = _run(command, cwd, os.environ | self.config.env, timeout or self.config.timeout, self.config.interpreter)
+            result = _run(
+                command, cwd, os.environ | self.config.env, timeout or self.config.timeout, self.config.interpreter
+            )
             output = {"output": result.stdout, "returncode": result.returncode, "exception_info": ""}
         except Exception as e:
             raw_output = getattr(e, "output", None)