From 0b8588b18d747dc40a4919de21ba5d07fa8f5fd2 Mon Sep 17 00:00:00 2001
From: Zois Pagoulatos <zpagoulatos@hotmail.com>
Date: Mon, 6 Apr 2026 22:44:40 +0200
Subject: [PATCH 1/7] feat(python): replace PyFlow with uv support

---
 python/pep518.go     | 10 +++++-----
 python/run.go        |  4 +---
 python/uv.go         | 21 +++++++++++++++++++++
 python/virtualenv.go | 13 +++----------
 4 files changed, 30 insertions(+), 18 deletions(-)
 create mode 100644 python/uv.go

diff --git a/python/pep518.go b/python/pep518.go
index 0d2204a..b9d4154 100644
--- a/python/pep518.go
+++ b/python/pep518.go
@@ -9,10 +9,10 @@ import (
 func pep518Proc(path string) {
 	tomlContent := readPyProjectToml(path)
 
-	if isPoetry(tomlContent) {
+	if isUv(path) {
+		uvProc(path)
+	} else if isPoetry(tomlContent) {
 		poetryProc(path)
-	} else if isPyFlow(tomlContent) {
-		pyflowProc(path)
 	}
 }
 
@@ -30,6 +30,6 @@ func isPoetry(tomlContent string) bool {
 	return strings.Contains(tomlContent, "tool.poetry")
 }
 
-func isPyFlow(tomlContent string) bool {
-	return strings.Contains(tomlContent, "tool.pyflow")
+func isUv(path string) bool {
+	return fileExists(filepath.Join(path, "uv.lock"))
 }
diff --git a/python/run.go b/python/run.go
index 7c12b07..1a8bb2c 100644
--- a/python/run.go
+++ b/python/run.go
@@ -6,9 +6,7 @@ import (
 )
 
 func getPythonCommand(path string) string {
-	if dirExists(filepath.Join(path, "./__pypackages__")) {
-		return "pyflow"
-	} else if dirExists(filepath.Join(path, "./.venv")) {
+	if dirExists(filepath.Join(path, "./.venv")) {
 		return filepath.Join(path, ".venv/bin/python")
 	} else {
 		return "python"
diff --git a/python/uv.go b/python/uv.go
new file mode 100644
index 0000000..8ffbe23
--- /dev/null
+++ b/python/uv.go
@@ -0,0 +1,21 @@
+package python
+
+import (
+	"fmt"
+	"os/exec"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func uvProc(path string) {
+	log.Info("Found 'uv.lock'. Creating virtual environment using 'uv'.")
+
+	// install dependencies
+	cmd := exec.Command("uv", "sync")
+	cmd.Dir = path
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		log.Error(fmt.Sprintf("%s", err.Error()))
+	}
+	log.Debug(string(out))
+}
diff --git a/python/virtualenv.go b/python/virtualenv.go
index 155b26b..6827150 100644
--- a/python/virtualenv.go
+++ b/python/virtualenv.go
@@ -8,17 +8,10 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
-// CleanUpVirtualEnv Cleans up a virtual env by deleting .venv/ and __pypackages__/ dirs
+// CleanUpVirtualEnv Cleans up a virtual env by deleting .venv/ dir
 func CleanUpVirtualEnv(path string) {
 	log.Info(fmt.Sprintf("Teardown: Current working directory: %s", path))
 
-	// cleanup __pypackages__ dir
-	if dirExists(filepath.Join(path, "./__pypackages__")) {
-		log.Debug("Deleting '__pypackages__/' directory")
-
-		os.RemoveAll(filepath.Join(path, "./__pypackages__"))
-	}
-
 	// cleanup virtual env
 	if dirExists(filepath.Join(path, "./.venv")) {
 		log.Debug("Deleting '.venv/' directory")
@@ -27,12 +20,12 @@ func CleanUpVirtualEnv(path string) {
 	}
 }
 
-// SetupVirtualEnv Creates a virtual environment using Poetry, PyFlow, pipenv or pip/venv
+// SetupVirtualEnv Creates a virtual environment using uv, Poetry, pipenv or pip/venv
 func SetupVirtualEnv(path string) {
 	log.Info(fmt.Sprintf("Setup: Current working directory: %s", path))
 
 	if fileExists(filepath.Join(path, "pyproject.toml")) {
-		// Poetry or PyFlow
+		// uv or Poetry
 		pep518Proc(path)
 	} else if fileExists(filepath.Join(path, "Pipfile")) {
 		pipenvProc(path)

From 0fa3bd036afaf1e681c91c95aa7b0708b08bdb1e Mon Sep 17 00:00:00 2001
From: Zois Pagoulatos <zpagoulatos@hotmail.com>
Date: Mon, 6 Apr 2026 22:45:46 +0200
Subject: [PATCH 2/7] chore: remove PyFlow source and artifact files

---
 .gitignore            |  2 +-
 pyflow.lock           | 29 -----------------------------
 pyproject.toml.pyflow | 13 -------------
 python/pyflow.go      | 21 ---------------------
 4 files changed, 1 insertion(+), 64 deletions(-)
 delete mode 100644 pyflow.lock
 delete mode 100644 pyproject.toml.pyflow
 delete mode 100644 python/pyflow.go

diff --git a/.gitignore b/.gitignore
index bbc8d3a..23af2aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
 .venv/
-__pypackages__/
\ No newline at end of file
+.sisyphus/
\ No newline at end of file
diff --git a/pyflow.lock b/pyflow.lock
deleted file mode 100644
index 8a1e31f..0000000
--- a/pyflow.lock
+++ /dev/null
@@ -1,29 +0,0 @@
-[[package]]
-id = 1
-name = "pendulum"
-version = "2.1.0"
-source = "pypi+https://pypi.org/pypi/pendulum/2.1.0/json"
-dependencies = ["python-dateutil 2.8.1 pypi+https://pypi.org/pypi/python-dateutil/2.8.1/json", "pytzdata 2019.3.0 pypi+https://pypi.org/pypi/pytzdata/2019.3.0/json"]
-
-[[package]]
-id = 3
-name = "python-dateutil"
-version = "2.8.1"
-source = "pypi+https://pypi.org/pypi/python-dateutil/2.8.1/json"
-dependencies = ["six 1.15.0 pypi+https://pypi.org/pypi/six/1.15.0/json"]
-
-[[package]]
-id = 4
-name = "six"
-version = "1.15.0"
-source = "pypi+https://pypi.org/pypi/six/1.15.0/json"
-dependencies = []
-
-[[package]]
-id = 2
-name = "pytzdata"
-version = "2019.3.0"
-source = "pypi+https://pypi.org/pypi/pytzdata/2019.3.0/json"
-dependencies = []
-
-[metadata]
diff --git a/pyproject.toml.pyflow b/pyproject.toml.pyflow
deleted file mode 100644
index aa7f248..0000000
--- a/pyproject.toml.pyflow
+++ /dev/null
@@ -1,13 +0,0 @@
-# See PEP 518: https://www.python.org/dev/peps/pep-0518/ for info on this file's structure.
-
-[tool.pyflow]
-name = ""
-py_version = "3.7"
-version = "0.1.0"
-
-[tool.pyflow.scripts]
-
-[tool.pyflow.dependencies]
-pendulum = ">=2.1.0"
-
-[tool.pyflow.dev-dependencies]
diff --git a/python/pyflow.go b/python/pyflow.go
deleted file mode 100644
index ca2c5cd..0000000
--- a/python/pyflow.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package python
-
-import (
-	"fmt"
-	"os/exec"
-
-	log "github.com/sirupsen/logrus"
-)
-
-func pyflowProc(path string) {
-	log.Info("Found 'pyproject.toml'. Creating virtual environment using 'PyFlow'.")
-
-	// install dependencies
-	cmd := exec.Command("pyflow", "install")
-	cmd.Dir = path
-	out, err := cmd.CombinedOutput()
-	if err != nil {
-		log.Error(fmt.Sprintf("%s", err.Error()))
-	}
-	log.Debug(string(out))
-}

From 963fd58e80ccd557f2285b24b1d0d203c527c74a Mon Sep 17 00:00:00 2001
From: Zois Pagoulatos <zpagoulatos@hotmail.com>
Date: Mon, 6 Apr 2026 22:46:54 +0200
Subject: [PATCH 3/7] docs: add AGENTS.md

---
 AGENTS.md | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 AGENTS.md

diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..ed6994c
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,96 @@
+# AGENTS.md
+
+This file documents the go-python-runner project for AI coding agents.
+
+## Project Overview
+
+`go-python-runner` is a Go library that runs Python scripts in isolated virtual environments. It detects which Python package manager a project uses, creates the virtual environment, and provides the correct Python binary path to execute scripts.
+
+Module path: `github.com/zoispag/go-python-runner`
+
+## Repository Structure
+
+```
+go-python-runner/
+├── main.go               # Demo entry point (runs script.py in CWD)
+├── python/               # Core library package
+│   ├── virtualenv.go     # Public API: SetupVirtualEnv, CleanUpVirtualEnv
+│   ├── run.go            # Public API: GetPythonRunCommand, ExecutePython
+│   ├── pep518.go         # Routes pyproject.toml projects to uv or Poetry
+│   ├── uv.go             # uv handler: runs `uv sync`
+│   ├── poetry.go         # Poetry handler: runs `poetry install`
+│   ├── pipenv.go         # pipenv handler: runs `pipenv install`
+│   ├── pip.go            # pip+venv handler: creates venv and pip installs
+│   └── utility.go        # fileExists() and dirExists() helpers
+├── go.mod
+└── go.sum
+```
+
+## Public API
+
+All public functions are in the `python` package (`github.com/zoispag/go-python-runner/python`).
+
+### `SetupVirtualEnv(path string)`
+Creates a virtual environment at the given path by detecting which package manager to use and running the appropriate install command. See package manager detection below.
+
+### `CleanUpVirtualEnv(path string)`
+Deletes the `.venv/` directory if it exists at the given path.
+
+### `ExecutePython(path string, scriptName string) ([]byte, error)`
+Runs the given Python script using the virtual environment's Python binary. Returns combined stdout+stderr output.
+
+### `GetPythonRunCommand(path string, scriptName string) *exec.Cmd`
+Returns an `*exec.Cmd` for running the Python script, allowing the caller to control execution (Start, Wait, pipes, etc.).
+
+## Package Manager Detection & Precedence
+
+`SetupVirtualEnv` checks for indicator files in this order:
+
+| Priority | Tool | Indicator file | Install command |
+|----------|------|---------------|-----------------|
+| 1 | **uv** | `uv.lock` (+ `pyproject.toml`) | `uv sync` |
+| 2 | **Poetry** | `pyproject.toml` with `[tool.poetry]` section | `poetry install` |
+| 3 | **pipenv** | `Pipfile` | `pipenv install` |
+| 4 | **pip + venv** | `requirements.txt` | `python3 -m venv .venv` + `pip install -r requirements.txt` |
+
+All supported tools install dependencies into `.venv/` in the project directory. `GetPythonRunCommand` / `ExecutePython` use `.venv/bin/python` if `.venv/` exists, otherwise fall back to system `python`.
+
+## Handler Pattern
+
+Every package manager handler follows the same structure:
+
+```go
+func xyzProc(path string) {
+    log.Info("Found '<indicator>'. Creating virtual environment using '<Tool>'.")
+    cmd := exec.Command("<tool>", "<args>")
+    cmd.Dir = path
+    out, err := cmd.CombinedOutput()
+    if err != nil {
+        log.Error(fmt.Sprintf("%s", err.Error()))
+    }
+    log.Debug(string(out))
+}
+```
+
+Errors are logged via `log.Error`, not returned. This is the established convention — do not change handlers to return errors.
+
+## Build & Run Commands
+
+```bash
+go build ./...          # Build
+go vet ./...            # Vet
+go run .                # Run demo (uses CWD as Python project path)
+GO_DEBUG_MODE=on go run main.go  # Run with debug logging
+```
+
+## Conventions
+
+- Error handling: use `log.Error(fmt.Sprintf(...))` — never return errors from handlers
+- New package manager: add `<name>.go` in `python/`, add detection + routing in `pep518.go` or `virtualenv.go`
+- Do not modify public function signatures in `virtualenv.go` or `run.go`
+- Do not change `ioutil.ReadFile` in `pep518.go` to `os.ReadFile` — leave deprecated API as-is
+- Do not fix `fileExists("poetry.toml")` in `poetryProc` — pre-existing CWD-relative behaviour, out of scope
+
+## Commit Rules
+
+- Never add `Co-authored-by` trailers or any co-author lines to commits

From d1d8e952a5013b24fc7751411c6a0b19879aebee Mon Sep 17 00:00:00 2001
From: Zois Pagoulatos <zpagoulatos@hotmail.com>
Date: Mon, 6 Apr 2026 22:47:40 +0200
Subject: [PATCH 4/7] docs: update README to replace PyFlow with uv

---
 README.md | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index c960201..19e7bf7 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,8 @@
 It runs a python script in an isolated environment (virtual environment) via a go wrapper.
 It will install dependecies, using one of the following package managers with the following order:
 
-1. Poetry (using `pyproject.toml`)
-2. PyFlow (using `pyproject.toml`)
+1. uv (using `uv.lock` + `pyproject.toml`)
+2. Poetry (using `pyproject.toml`)
 3. pipenv (using `Pipfile`)
 4. pip & venv (using `requirements.txt`)
 
@@ -26,7 +26,7 @@ This will create a vitual enviroment given the existence of proper files (`pypro
 python.CleanUpVirtualEnv("/path/to/python/script/")
 ```
 
-This will delete the `.venv` directory if exists. In case of pyflow, it will also delete the `__pypackages__` directory.
+This will delete the `.venv` directory if exists.
 
 #### Run python script inside virtual environment
 
@@ -81,8 +81,8 @@ func main() {
 
 ### Python package managers
 
+- [uv](https://docs.astral.sh/uv/getting-started/installation/)
 - [Poetry](https://python-poetry.org/docs/#installation)
-- [PyFlow](https://github.com/David-OConnor/pyflow#installation)
 - [pipenv](https://pipenv-fork.readthedocs.io/en/latest/install.html)
 
 ### Contribute

From a455344951a9956ef0aac0eeec067508d99f4022 Mon Sep 17 00:00:00 2001
From: Zois Pagoulatos <zpagoulatos@hotmail.com>
Date: Mon, 6 Apr 2026 23:14:26 +0200
Subject: [PATCH 5/7] test: add e2e tests and testdata fixtures per package
 manager

- Add testdata/{uv,poetry,pipenv,pip}/ fixtures (pyproject.toml/lockfiles/script.py)
- Add python/e2e_test.go with one test per package manager; skips if tool not on PATH
- Add .github/workflows/test.yml: matrix CI over uv/poetry/pipenv/pip
- Remove root-level Python demo files (Pipfile*, pyproject.toml, poetry*, requirements.txt, script.py, main.go)
- Update AGENTS.md with testdata layout and test commands
---
 .github/workflows/test.yml          |  54 ++++++++++++
 AGENTS.md                           |  23 +++--
 Pipfile.lock                        |  67 ---------------
 main.go                             |  36 --------
 poetry.lock                         |  77 -----------------
 poetry.toml                         |   2 -
 pyproject.toml                      |  15 ----
 python/e2e_test.go                  | 107 +++++++++++++++++++++++
 requirements.txt                    |   1 -
 testdata/pip/requirements.txt       |   1 +
 script.py => testdata/pip/script.py |   3 +-
 Pipfile => testdata/pipenv/Pipfile  |   6 +-
 testdata/pipenv/Pipfile.lock        | 119 +++++++++++++++++++++++++
 testdata/pipenv/script.py           |   4 +
 testdata/poetry/poetry.lock         | 129 ++++++++++++++++++++++++++++
 testdata/poetry/poetry.toml         |   2 +
 testdata/poetry/pyproject.toml      |  13 +++
 testdata/poetry/script.py           |   4 +
 testdata/uv/pyproject.toml          |   8 ++
 testdata/uv/script.py               |   4 +
 testdata/uv/uv.lock                 |  87 +++++++++++++++++++
 21 files changed, 551 insertions(+), 211 deletions(-)
 create mode 100644 .github/workflows/test.yml
 delete mode 100644 Pipfile.lock
 delete mode 100644 main.go
 delete mode 100644 poetry.lock
 delete mode 100644 poetry.toml
 delete mode 100644 pyproject.toml
 create mode 100644 python/e2e_test.go
 delete mode 100644 requirements.txt
 create mode 100644 testdata/pip/requirements.txt
 rename script.py => testdata/pip/script.py (62%)
 rename Pipfile => testdata/pipenv/Pipfile (62%)
 create mode 100644 testdata/pipenv/Pipfile.lock
 create mode 100644 testdata/pipenv/script.py
 create mode 100644 testdata/poetry/poetry.lock
 create mode 100644 testdata/poetry/poetry.toml
 create mode 100644 testdata/poetry/pyproject.toml
 create mode 100644 testdata/poetry/script.py
 create mode 100644 testdata/uv/pyproject.toml
 create mode 100644 testdata/uv/script.py
 create mode 100644 testdata/uv/uv.lock

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..c0e40e7
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,54 @@
+name: Test
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  test:
+    name: E2E (${{ matrix.pm }})
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        pm: [uv, poetry, pipenv, pip]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install uv
+        if: matrix.pm == 'uv'
+        uses: astral-sh/setup-uv@v5
+
+      - name: Install Poetry
+        if: matrix.pm == 'poetry'
+        uses: snok/install-poetry@v1
+        with:
+          virtualenvs-in-project: true
+
+      - name: Install pipenv
+        if: matrix.pm == 'pipenv'
+        run: pip install pipenv
+
+      - name: go build
+        run: go build ./...
+
+      - name: go vet
+        run: go vet ./...
+
+      - name: go test
+        run: go test -v -timeout 120s ./python/ -run TestE2E
diff --git a/AGENTS.md b/AGENTS.md
index ed6994c..5477cdd 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -12,7 +12,6 @@ Module path: `github.com/zoispag/go-python-runner`
 
 ```
 go-python-runner/
-├── main.go               # Demo entry point (runs script.py in CWD)
 ├── python/               # Core library package
 │   ├── virtualenv.go     # Public API: SetupVirtualEnv, CleanUpVirtualEnv
 │   ├── run.go            # Public API: GetPythonRunCommand, ExecutePython
@@ -21,7 +20,16 @@ go-python-runner/
 │   ├── poetry.go         # Poetry handler: runs `poetry install`
 │   ├── pipenv.go         # pipenv handler: runs `pipenv install`
 │   ├── pip.go            # pip+venv handler: creates venv and pip installs
-│   └── utility.go        # fileExists() and dirExists() helpers
+│   ├── utility.go        # fileExists() and dirExists() helpers
+│   └── e2e_test.go       # E2E tests (one per package manager)
+├── testdata/             # E2E test fixtures (one subdir per package manager)
+│   ├── uv/               # uv fixture: pyproject.toml, uv.lock, script.py
+│   ├── poetry/           # Poetry fixture: pyproject.toml, poetry.lock, poetry.toml, script.py
+│   ├── pipenv/           # pipenv fixture: Pipfile, Pipfile.lock, script.py
+│   └── pip/              # pip fixture: requirements.txt, script.py
+├── .github/workflows/
+│   ├── codeql-analysis.yml
+│   └── test.yml          # E2E CI: matrix over uv/poetry/pipenv/pip
 ├── go.mod
 └── go.sum
 ```
@@ -74,15 +82,16 @@ func xyzProc(path string) {
 
 Errors are logged via `log.Error`, not returned. This is the established convention — do not change handlers to return errors.
 
-## Build & Run Commands
+## Build, Test & Run Commands
 
 ```bash
-go build ./...          # Build
-go vet ./...            # Vet
-go run .                # Run demo (uses CWD as Python project path)
-GO_DEBUG_MODE=on go run main.go  # Run with debug logging
+go build ./...                              # Build
+go vet ./...                                # Vet
+go test -v -timeout 120s ./python/          # Run all E2E tests
 ```
 
+The E2E tests in `python/e2e_test.go` copy each `testdata/<pm>/` fixture into a temp directory, call `SetupVirtualEnv`, run `script.py` via `ExecutePython`, assert an ISO 8601 timestamp is printed, then call `CleanUpVirtualEnv`. Each test skips automatically if the required tool is not on `PATH`.
+
 ## Conventions
 
 - Error handling: use `log.Error(fmt.Sprintf(...))` — never return errors from handlers
diff --git a/Pipfile.lock b/Pipfile.lock
deleted file mode 100644
index 64f9bd9..0000000
--- a/Pipfile.lock
+++ /dev/null
@@ -1,67 +0,0 @@
-{
-    "_meta": {
-        "hash": {
-            "sha256": "061b9b9c5aaa9803e9875cfc5373069db0b59b6f8a1732659b778aa3a11ef4a8"
-        },
-        "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3.7"
-        },
-        "sources": [
-            {
-                "name": "pypi",
-                "url": "https://pypi.org/simple",
-                "verify_ssl": true
-            }
-        ]
-    },
-    "default": {
-        "pendulum": {
-            "hashes": [
-                "sha256:093cab342e10516660e64b935a6da1a043e0286de36cc229fb48471415981ffe",
-                "sha256:0cbbd4f30c69a283690d9ed8e58e44a990e067e59ee05b5ef55d022b38659aeb",
-                "sha256:2788945a0111d5325fd27ae3e3b18b741e440d20bdb7d4ea22fce7c9a4fbbf40",
-                "sha256:4420e058110740a8193fb0709350dfc6ac790a99c345fc4e92e24df0f834ddcb",
-                "sha256:575934b65b298eeb99c5a5b1673c945fc5c99e2b56caff772a91bc4b1eba7b82",
-                "sha256:6cf0f876cd088ee1578266f4231121376747aa90c3ed3b8e212a8344a9920061",
-                "sha256:70007aebc4494163f8705909a1996ce21ab853801b57fba4c2dd53c3df5c38f0",
-                "sha256:701127e1f0ff7c253cc0c07f29becc5f9210547914e0bbe59ffd9fa064d7c3c8",
-                "sha256:75a62e3f98499283fafe8ef4b44f81052e84825b00a0b64609dd8a06985382b9",
-                "sha256:816e01dcb0ba4ffcf2ceaafe4d644174fea680361e909f6f8ba0a4fdb2ccae24",
-                "sha256:9eda38ff65b1f297d860d3f562480e048673fb4b81fdd5c8c55decb519b97ed2",
-                "sha256:a79a72a7fd1092a7c69ddd8580a0be5365ded40c9f9c865623c7665742e3b888",
-                "sha256:aa13ddea12fd871d3191f633f08090b91ea2e80fb0ed50a7a149add7f680b12d",
-                "sha256:aa560bd39d94f3889646422f1e65b8dfd025bf6288d43e5c2e31d4f972aaf2e4",
-                "sha256:ac3c6a992beeb4c9bd90c317a1bb2a6cba159b49a49b6dd3c86b5bacb86f3d50",
-                "sha256:d42d1e870541eeaf3fe0500aac0c76a85bd4bd53ebed74f9a7daf8f01ac77374",
-                "sha256:eb7e349bb2d1b2b418d094e2179d6768561e8242fd8cb640b5aaba735f3e91d1",
-                "sha256:edd00e6b43698762e10bfda508cc9c06bad88c0703a9b37e412aec1189e06e23",
-                "sha256:ff7f3420de0c0cf21c1fc813d581fcfa4a1fb6d87f09485880b3e1204eb9cdd7"
-            ],
-            "index": "pypi",
-            "version": "==2.1.0"
-        },
-        "python-dateutil": {
-            "hashes": [
-                "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c",
-                "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"
-            ],
-            "version": "==2.8.1"
-        },
-        "pytzdata": {
-            "hashes": [
-                "sha256:84c52b9a47d097fcd483f047a544979de6c3a86e94c845e3569e9f8acd0fa071",
-                "sha256:fac06f7cdfa903188dc4848c655e4adaee67ee0f2fe08e7daf815cf2a761ee5e"
-            ],
-            "version": "==2019.3"
-        },
-        "six": {
-            "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
-            ],
-            "version": "==1.15.0"
-        }
-    },
-    "develop": {}
-}
diff --git a/main.go b/main.go
deleted file mode 100644
index 8ae6665..0000000
--- a/main.go
+++ /dev/null
@@ -1,36 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-
-	log "github.com/sirupsen/logrus"
-	python "github.com/zoispag/go-python-runner/python"
-)
-
-func init() {
-	// Output to stdout instead of the default stderr
-	// Can be any io.Writer, see below for File example
-	log.SetOutput(os.Stdout)
-
-	// Set debug mode on
-	if os.Getenv("GO_DEBUG_MODE") == "on" {
-		log.SetLevel(log.DebugLevel)
-	}
-}
-
-func main() {
-	path, err := os.Getwd()
-	if err != nil {
-		log.Error(fmt.Sprintf("Job resulted in error: %s", err.Error()))
-	}
-	python.CleanUpVirtualEnv(path)
-	python.SetupVirtualEnv(path)
-
-	cmd := python.GetPythonRunCommand(path, "script.py")
-	out, err := cmd.CombinedOutput()
-	if err != nil {
-		log.Error(fmt.Sprintf("Job resulted in error: %s", err.Error()))
-	}
-	log.Info(string(out))
-}
diff --git a/poetry.lock b/poetry.lock
deleted file mode 100644
index 3a2bbaf..0000000
--- a/poetry.lock
+++ /dev/null
@@ -1,77 +0,0 @@
-[[package]]
-category = "main"
-description = "Python datetimes made easy"
-name = "pendulum"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.1.0"
-
-[package.dependencies]
-python-dateutil = ">=2.6,<3.0"
-pytzdata = ">=2018.3"
-
-[[package]]
-category = "main"
-description = "Extensions to the standard Python datetime module"
-name = "python-dateutil"
-optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
-version = "2.8.1"
-
-[package.dependencies]
-six = ">=1.5"
-
-[[package]]
-category = "main"
-description = "The Olson timezone database for Python."
-name = "pytzdata"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2019.3"
-
-[[package]]
-category = "main"
-description = "Python 2 and 3 compatibility utilities"
-name = "six"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "1.14.0"
-
-[metadata]
-content-hash = "889a067a4895dfd3d40a87c14783c86d2b9bbbfc79f9a1fc0548b03dd52be4d3"
-python-versions = "^3.7"
-
-[metadata.files]
-pendulum = [
-    {file = "pendulum-2.1.0-cp27-cp27m-macosx_10_13_x86_64.whl", hash = "sha256:9eda38ff65b1f297d860d3f562480e048673fb4b81fdd5c8c55decb519b97ed2"},
-    {file = "pendulum-2.1.0-cp27-cp27m-win_amd64.whl", hash = "sha256:70007aebc4494163f8705909a1996ce21ab853801b57fba4c2dd53c3df5c38f0"},
-    {file = "pendulum-2.1.0-cp35-cp35m-macosx_10_13_x86_64.whl", hash = "sha256:575934b65b298eeb99c5a5b1673c945fc5c99e2b56caff772a91bc4b1eba7b82"},
-    {file = "pendulum-2.1.0-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:d42d1e870541eeaf3fe0500aac0c76a85bd4bd53ebed74f9a7daf8f01ac77374"},
-    {file = "pendulum-2.1.0-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:ff7f3420de0c0cf21c1fc813d581fcfa4a1fb6d87f09485880b3e1204eb9cdd7"},
-    {file = "pendulum-2.1.0-cp35-cp35m-win_amd64.whl", hash = "sha256:ac3c6a992beeb4c9bd90c317a1bb2a6cba159b49a49b6dd3c86b5bacb86f3d50"},
-    {file = "pendulum-2.1.0-cp36-cp36m-macosx_10_13_x86_64.whl", hash = "sha256:75a62e3f98499283fafe8ef4b44f81052e84825b00a0b64609dd8a06985382b9"},
-    {file = "pendulum-2.1.0-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:a79a72a7fd1092a7c69ddd8580a0be5365ded40c9f9c865623c7665742e3b888"},
-    {file = "pendulum-2.1.0-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:701127e1f0ff7c253cc0c07f29becc5f9210547914e0bbe59ffd9fa064d7c3c8"},
-    {file = "pendulum-2.1.0-cp36-cp36m-win_amd64.whl", hash = "sha256:816e01dcb0ba4ffcf2ceaafe4d644174fea680361e909f6f8ba0a4fdb2ccae24"},
-    {file = "pendulum-2.1.0-cp37-cp37m-macosx_10_13_x86_64.whl", hash = "sha256:edd00e6b43698762e10bfda508cc9c06bad88c0703a9b37e412aec1189e06e23"},
-    {file = "pendulum-2.1.0-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:4420e058110740a8193fb0709350dfc6ac790a99c345fc4e92e24df0f834ddcb"},
-    {file = "pendulum-2.1.0-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:aa560bd39d94f3889646422f1e65b8dfd025bf6288d43e5c2e31d4f972aaf2e4"},
-    {file = "pendulum-2.1.0-cp37-cp37m-win_amd64.whl", hash = "sha256:2788945a0111d5325fd27ae3e3b18b741e440d20bdb7d4ea22fce7c9a4fbbf40"},
-    {file = "pendulum-2.1.0-cp38-cp38-macosx_10_13_x86_64.whl", hash = "sha256:eb7e349bb2d1b2b418d094e2179d6768561e8242fd8cb640b5aaba735f3e91d1"},
-    {file = "pendulum-2.1.0-cp38-cp38-manylinux1_i686.whl", hash = "sha256:6cf0f876cd088ee1578266f4231121376747aa90c3ed3b8e212a8344a9920061"},
-    {file = "pendulum-2.1.0-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:aa13ddea12fd871d3191f633f08090b91ea2e80fb0ed50a7a149add7f680b12d"},
-    {file = "pendulum-2.1.0-cp38-cp38m-win_amd64.whl", hash = "sha256:0cbbd4f30c69a283690d9ed8e58e44a990e067e59ee05b5ef55d022b38659aeb"},
-    {file = "pendulum-2.1.0.tar.gz", hash = "sha256:093cab342e10516660e64b935a6da1a043e0286de36cc229fb48471415981ffe"},
-]
-python-dateutil = [
-    {file = "python-dateutil-2.8.1.tar.gz", hash = "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c"},
-    {file = "python_dateutil-2.8.1-py2.py3-none-any.whl", hash = "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"},
-]
-pytzdata = [
-    {file = "pytzdata-2019.3-py2.py3-none-any.whl", hash = "sha256:84c52b9a47d097fcd483f047a544979de6c3a86e94c845e3569e9f8acd0fa071"},
-    {file = "pytzdata-2019.3.tar.gz", hash = "sha256:fac06f7cdfa903188dc4848c655e4adaee67ee0f2fe08e7daf815cf2a761ee5e"},
-]
-six = [
-    {file = "six-1.14.0-py2.py3-none-any.whl", hash = "sha256:8f3cd2e254d8f793e7f3d6d9df77b92252b52637291d0f0da013c76ea2724b6c"},
-    {file = "six-1.14.0.tar.gz", hash = "sha256:236bdbdce46e6e6a3d61a337c0f8b763ca1e8717c03b369e87a7ec7ce1319c0a"},
-]
diff --git a/poetry.toml b/poetry.toml
deleted file mode 100644
index efa46ec..0000000
--- a/poetry.toml
+++ /dev/null
@@ -1,2 +0,0 @@
-[virtualenvs]
-in-project = true
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
deleted file mode 100644
index 5805c22..0000000
--- a/pyproject.toml
+++ /dev/null
@@ -1,15 +0,0 @@
-[tool.poetry]
-name = "go-python-runner"
-version = "0.1.0"
-description = ""
-authors = ["Zois Pagoulatos <zpagoulatos@hotmail.com>"]
-
-[tool.poetry.dependencies]
-python = "^3.7"
-pendulum = "^2.1.0"
-
-[tool.poetry.dev-dependencies]
-
-[build-system]
-requires = ["poetry>=0.12"]
-build-backend = "poetry.masonry.api"
diff --git a/python/e2e_test.go b/python/e2e_test.go
new file mode 100644
index 0000000..6ac226b
--- /dev/null
+++ b/python/e2e_test.go
@@ -0,0 +1,107 @@
+package python_test
+
+import (
+	"io/fs"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"testing"
+
+	python "github.com/zoispag/go-python-runner/python"
+)
+
+// iso8601Re matches the ISO 8601 datetime string printed by script.py.
+var iso8601Re = regexp.MustCompile(`^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}`)
+
+// copyDir recursively copies src into dst (dst must already exist).
+func copyDir(t *testing.T, src, dst string) {
+	t.Helper()
+	err := filepath.WalkDir(src, func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		rel, _ := filepath.Rel(src, path)
+		target := filepath.Join(dst, rel)
+		if d.IsDir() {
+			return os.MkdirAll(target, 0755)
+		}
+		data, err := os.ReadFile(path)
+		if err != nil {
+			return err
+		}
+		return os.WriteFile(target, data, 0644)
+	})
+	if err != nil {
+		t.Fatalf("copyDir %s -> %s: %v", src, dst, err)
+	}
+}
+
+// fixtureDir returns the absolute path to testdata/<name>.
+func fixtureDir(t *testing.T, name string) string {
+	t.Helper()
+	// This file lives in python/; testdata is one level up.
+	abs, err := filepath.Abs(filepath.Join("..", "testdata", name))
+	if err != nil {
+		t.Fatalf("fixtureDir %s: %v", name, err)
+	}
+	return abs
+}
+
+// requireTool skips the test if the named binary is not on PATH.
+func requireTool(t *testing.T, tool string) {
+	t.Helper()
+	if _, err := exec.LookPath(tool); err != nil {
+		t.Skipf("%s not found on PATH — skipping", tool)
+	}
+}
+
+func runE2E(t *testing.T, pmName string) {
+	t.Helper()
+
+	// Copy fixture into a temp dir so .venv doesn't pollute the source tree.
+	tmp := t.TempDir()
+	copyDir(t, fixtureDir(t, pmName), tmp)
+
+	// SetupVirtualEnv must create .venv.
+	python.SetupVirtualEnv(tmp)
+	venvPath := filepath.Join(tmp, ".venv")
+	if _, err := os.Stat(venvPath); os.IsNotExist(err) {
+		t.Fatalf("SetupVirtualEnv did not create .venv for %s", pmName)
+	}
+
+	// ExecutePython must run script.py and return an ISO 8601 timestamp.
+	out, err := python.ExecutePython(tmp, filepath.Join(tmp, "script.py"))
+	if err != nil {
+		t.Fatalf("ExecutePython error for %s: %v\noutput: %s", pmName, err, out)
+	}
+	if !iso8601Re.Match(out) {
+		t.Fatalf("unexpected output for %s: %q (want ISO 8601 timestamp)", pmName, out)
+	}
+
+	// CleanUpVirtualEnv must remove .venv.
+	python.CleanUpVirtualEnv(tmp)
+	if _, err := os.Stat(venvPath); !os.IsNotExist(err) {
+		t.Fatalf("CleanUpVirtualEnv did not remove .venv for %s", pmName)
+	}
+}
+
+func TestE2EUv(t *testing.T) {
+	requireTool(t, "uv")
+	runE2E(t, "uv")
+}
+
+func TestE2EPoetry(t *testing.T) {
+	requireTool(t, "poetry")
+	runE2E(t, "poetry")
+}
+
+func TestE2EPipenv(t *testing.T) {
+	requireTool(t, "pipenv")
+	runE2E(t, "pipenv")
+}
+
+func TestE2EPip(t *testing.T) {
+	requireTool(t, "python3")
+	runE2E(t, "pip")
+}
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 667545a..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-pendulum==2.1.0
\ No newline at end of file
diff --git a/testdata/pip/requirements.txt b/testdata/pip/requirements.txt
new file mode 100644
index 0000000..d1aedd1
--- /dev/null
+++ b/testdata/pip/requirements.txt
@@ -0,0 +1 @@
+pendulum>=3.0
diff --git a/script.py b/testdata/pip/script.py
similarity index 62%
rename from script.py
rename to testdata/pip/script.py
index 3afdfc8..151fffa 100644
--- a/script.py
+++ b/testdata/pip/script.py
@@ -1,5 +1,4 @@
 import pendulum
 
 now = pendulum.now("Europe/Paris")
-
-print(now.to_iso8601_string())
\ No newline at end of file
+print(now.to_iso8601_string())
diff --git a/Pipfile b/testdata/pipenv/Pipfile
similarity index 62%
rename from Pipfile
rename to testdata/pipenv/Pipfile
index 21d71a4..64b6756 100644
--- a/Pipfile
+++ b/testdata/pipenv/Pipfile
@@ -3,10 +3,8 @@ name = "pypi"
 url = "https://pypi.org/simple"
 verify_ssl = true
 
-[dev-packages]
-
 [packages]
-pendulum = ">=2.1.0"
+pendulum = ">=3.0"
 
 [requires]
-python_version = "3.7"
+python_version = "3.13"
diff --git a/testdata/pipenv/Pipfile.lock b/testdata/pipenv/Pipfile.lock
new file mode 100644
index 0000000..fa5787f
--- /dev/null
+++ b/testdata/pipenv/Pipfile.lock
@@ -0,0 +1,119 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "6728a3d826c9c2f296999077b1299230f4dc6ce02f3f7ec03e662c171a51d429"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.13"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "pendulum": {
+            "hashes": [
+                "sha256:04310463879a8d84534756ef9820d433e88b879203b6e10a5b416899dc05e7f1",
+                "sha256:063ab61af953bb56ad5bc8e131fd0431c915ed766d90ccecd7549c8090b51004",
+                "sha256:1ba955511c12fec2252038b0c866c25c0c30b720bf74d3023710f121e42b1498",
+                "sha256:249d18f5543c9f43aba3bd77b34864ec8cf6f64edbead405f442e23c94fce63d",
+                "sha256:26401e2de77c437e8f3b6160c08c6c5d45518d906f8f9b48fd7cb5aa0f4e2aff",
+                "sha256:26a3ae26c9dd70a4256f1c2f51addc43641813574c0db6ce5664f9861cd93621",
+                "sha256:2b10d91dc00f424444a42f47c69e6b3bfd79376f330179dc06bc342184b35f9a",
+                "sha256:2dd31fd46aa8fceaff5de674b8d57b0b659753986cb78fa9e24368da7f8e4eec",
+                "sha256:3159cceb54f5aa8b85b141c7f0ce3fac8bdd1ffdc7c79e67dca9133eac7c4d11",
+                "sha256:326ef1baa8657c9c4aead5c4eac06a46355ba4e338816153e2929b0b548554b5",
+                "sha256:38a300df5a82ebea8634a1aed3d98c92968ba856d2ca7ba2acf7228f0e0e99af",
+                "sha256:39ef129d7b90aab49708645867abdd207b714ba7bff12dae549975b0aca09716",
+                "sha256:3a2af22eeec438fbaac72bb7fba783e0950a514fba980d9a32db394b51afccec",
+                "sha256:3a8d4212b1577ee3a034d18b360a9afa55bfc72789aeb805353be8b2ac132035",
+                "sha256:3aaa50342dc174acebdc21089315012e63789353957b39ac83cac9f9fc8d1075",
+                "sha256:4115bf364a2ec6d5ddc476751ceaa4164a04f2c15589f0d29aa210ddb784b15d",
+                "sha256:4151a903356413fdd9549de0997b708fb95a214ed97803ffb479ffd834088378",
+                "sha256:446f63d84ef21281844ceb45141536d3aabe291a821b6505e21a0d0e3ea95d67",
+                "sha256:4a6bf778c6b42830b001c714dae5b9dad78da38e2e08203a4b0f5d53f8fa5e63",
+                "sha256:55d7ba6bb74171c3ee409bf30076ee3a259a3c2bb147ac87ebb76aaa3cf5d3a2",
+                "sha256:5b4f7491951c11bbdb20893817352c9140d31d1ae333839c34c0bca081a50a86",
+                "sha256:5cd956d4176afc7bfe8a91bf3f771b46ff8d326f6c5bf778eb5010eb742ebba6",
+                "sha256:5d775cc608c909ad415c8e789c84a9f120bb6a794c4215b2d8d910893cf0ec6a",
+                "sha256:625209bb7133d990905e8935e1c04f0a82315ae777b67910969b16f665d62c0b",
+                "sha256:63070ff03e30a57b16c8e793ee27da8dac4123c1d6e0cf74c460ce9ee8a64aa4",
+                "sha256:637e65af042f383a2764a886aa28ccc6f853bf7a142df18e41c720542934c13b",
+                "sha256:70214f30114ee6de09b0abbb90e74f68682f194485200897930125de36024c21",
+                "sha256:71d46bcc86269f97bfd8c5f1475d55e717696a0a010b1871023605ca94624031",
+                "sha256:7bac7df7696e1c942e17c0556b3a7bcdd1d7aa5b24faee7620cb071e754a0622",
+                "sha256:7c644cc15eec5fb02291f0f193195156780fd5a0affd7a349592403826d1a35e",
+                "sha256:85c7689defc65c4dc29bf257f7cca55d210fabb455de9476e1748d2ab2ae80d7",
+                "sha256:86029fd802c5650f2cbef3f9302608325a676d3a883d6a5782bc855e5d03918b",
+                "sha256:8de794a7f665aebc8c1ba4dd4b05ab8fe1a36ce9c0498366adf1d1edd79b2686",
+                "sha256:927e9c9ab52ff68e71b76dd410e5f1cd78f5ea6e7f0a9f5eb549aea16a4d5354",
+                "sha256:937a529aa302efa18dcf25e53834964a87ffb2df8f80e3669ab7757a6126beaf",
+                "sha256:9585594d32faa71efa5a78f576f1ee4f79e9c5340d7c6f0cd6c5dfe725effaaa",
+                "sha256:a50d8cf42f06d3d8c3f8bb2a7ac47fa93b5145e69de6a7209be6a47afdd9cf76",
+                "sha256:a7d2e9bfb065727d8676e7ada3793b47a24349500a5e9637404355e482c822be",
+                "sha256:a8c67fb9a1fe8fc1adae2cc01b0c292b268c12475b4609ff4aed71c9dd367b4d",
+                "sha256:acfdee9ddc56053cb7c8c075afbfde0857322d09e56a56195b9cd127fae87e4c",
+                "sha256:addb0512f919fe5b70c8ee534ee71c775630d3efe567ea5763d92acff857cfc3",
+                "sha256:b6f1d8641e8bd48b9b6f77f96fd498d3ecec63611ba8e7207e63936307846042",
+                "sha256:baa9a66c980defda6cfe1275103a94b22e90d83ebd7a84cc961cee6cbd25a244",
+                "sha256:bf0b489def51202a39a2a665dcc4162d5e46934a740fe4c4fe3068979610156c",
+                "sha256:c17ac069e88c5a1e930a5ae0ef17357a14b9cc5a28abadda74eaa8106d241c8e",
+                "sha256:c352c63c1ff05f2198409b28498d7158547a8be23e1fbd4aa2cf5402fb239b55",
+                "sha256:c39ea5e9ffa20ea8bae986d00e0908bd537c8468b71d6b6503ab0b4c3d76e0ea",
+                "sha256:c8dde63e2796b62070a49ce813ce200aba9186130307f04ec78affcf6c2e8122",
+                "sha256:ce87750e0a644e8ddafa3e9437f0ff35af8d17eb5c77824864246ccf6b44d24a",
+                "sha256:d3cad6be303b4b9737f629191b73920e0e4c2fe1fbd5813b7a19b05f29d09a1c",
+                "sha256:d53134418e04335c3029a32e9341cccc9b085a28744fb5ee4e6a8f5039363b1a",
+                "sha256:d5e216e5a412563ea2ecf5de467dcf3d02717947fcdabe6811d5ee360726b02b",
+                "sha256:d6e46c28f4d067233c4a4c42748f4ffa641d9289c09e0e81488beb6d4b3fab51",
+                "sha256:db0f6a8a04475d9cba26ce701e7d66d266fd97227f2f5f499270eba04be1c7e9",
+                "sha256:de8c1ad1d1aa7d4ceae341528bab35a0f8c88a5aa63f2f5d84e16b517d1b32c2",
+                "sha256:dfbcd7a2a5ebabf5abaf07062555cd7bef9a472a6aa5281a6302afe66a481561",
+                "sha256:e1fbb540edecb21f8244aebfb05a1f2333ddc6c7819378c099d4a61cc91ae93c",
+                "sha256:e398d9e3db42d17f0c2cd39663c1c873ea6f11763ed6d126e2dcc92fc340d0dc",
+                "sha256:e5afc753e570cce1f44197676371f68953f7d4f022303d141bb09f804d5fe6d7",
+                "sha256:e5bbb92b155cd5018b3cf70ee49ed3b9c94398caaaa7ed97fe41e5bb5a968418",
+                "sha256:e80feda2d10fa3ff8b1526715f7d33dcb7e08494b3088f2c8a3ac92d4a4331ce",
+                "sha256:ef8f783fa7a14973b0596d8af2a5b2d90858a55030e9b4c6885eb4284b88314f",
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+                "sha256:f3a9c18a89b4d9ef39c5fa6a78722aaff8d5be2597c129a3b16b9f40a561acf3",
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+                "sha256:ffc169ad7595228d4dfc44d4e016846ff1bb5873b9f7ec70b0b1b51da0c77b3f"
+            ],
+            "index": "pypi",
+            "markers": "python_version >= '3.9'",
+            "version": "==3.2.0"
+        },
+        "python-dateutil": {
+            "hashes": [
+                "sha256:37dd54208da7e1cd875388217d5e00ebd4179249f90fb72437e91a35459a0ad3",
+                "sha256:a8b2bc7bffae282281c8140a97d3aa9c14da0b136dfe83f850eea9a5f7470427"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'",
+            "version": "==2.9.0.post0"
+        },
+        "six": {
+            "hashes": [
+                "sha256:4721f391ed90541fddacab5acf947aa0d3dc7d27b2e1e8eda2be8970586c3274",
+                "sha256:ff70335d468e7eb6ec65b95b99d3a2836546063f63acc5171de367e834932a81"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'",
+            "version": "==1.17.0"
+        },
+        "tzdata": {
+            "hashes": [
+                "sha256:4b1d2be7ac37ceafd7327b961aa3a54e467efbdb563a23655fbfe0d39cfc42a9",
+                "sha256:67658a1903c75917309e753fdc349ac0efd8c27db7a0cb406a25be4840f87f98"
+            ],
+            "markers": "python_version >= '2'",
+            "version": "==2026.1"
+        }
+    },
+    "develop": {}
+}
diff --git a/testdata/pipenv/script.py b/testdata/pipenv/script.py
new file mode 100644
index 0000000..151fffa
--- /dev/null
+++ b/testdata/pipenv/script.py
@@ -0,0 +1,4 @@
+import pendulum
+
+now = pendulum.now("Europe/Paris")
+print(now.to_iso8601_string())
diff --git a/testdata/poetry/poetry.lock b/testdata/poetry/poetry.lock
new file mode 100644
index 0000000..cc4ae4c
--- /dev/null
+++ b/testdata/poetry/poetry.lock
@@ -0,0 +1,129 @@
+# This file is automatically @generated by Poetry 2.3.3 and should not be changed by hand.
+
+[[package]]
+name = "pendulum"
+version = "3.2.0"
+description = "Python datetimes made easy"
+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
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+]
+
+[package.dependencies]
+python-dateutil = ">=2.6"
+tzdata = ">=2020.1"
+
+[package.extras]
+test = ["time-machine (>=2.6.0,<3.0.0) ; implementation_name != \"pypy\""]
+
+[[package]]
+name = "python-dateutil"
+version = "2.9.0.post0"
+description = "Extensions to the standard Python datetime module"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
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diff --git a/testdata/poetry/poetry.toml b/testdata/poetry/poetry.toml
new file mode 100644
index 0000000..ab1033b
--- /dev/null
+++ b/testdata/poetry/poetry.toml
@@ -0,0 +1,2 @@
+[virtualenvs]
+in-project = true
diff --git a/testdata/poetry/pyproject.toml b/testdata/poetry/pyproject.toml
new file mode 100644
index 0000000..3ddd56f
--- /dev/null
+++ b/testdata/poetry/pyproject.toml
@@ -0,0 +1,13 @@
+[tool.poetry]
+name = "go-python-runner-testdata-poetry"
+version = "0.1.0"
+description = "go-python-runner poetry e2e test fixture"
+authors = []
+
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+[build-system]
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diff --git a/testdata/poetry/script.py b/testdata/poetry/script.py
new file mode 100644
index 0000000..151fffa
--- /dev/null
+++ b/testdata/poetry/script.py
@@ -0,0 +1,4 @@
+import pendulum
+
+now = pendulum.now("Europe/Paris")
+print(now.to_iso8601_string())
diff --git a/testdata/uv/pyproject.toml b/testdata/uv/pyproject.toml
new file mode 100644
index 0000000..13f9846
--- /dev/null
+++ b/testdata/uv/pyproject.toml
@@ -0,0 +1,8 @@
+[project]
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+version = "0.1.0"
+description = "go-python-runner uv e2e test fixture"
+requires-python = ">=3.12"
+dependencies = [
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diff --git a/testdata/uv/script.py b/testdata/uv/script.py
new file mode 100644
index 0000000..151fffa
--- /dev/null
+++ b/testdata/uv/script.py
@@ -0,0 +1,4 @@
+import pendulum
+
+now = pendulum.now("Europe/Paris")
+print(now.to_iso8601_string())
diff --git a/testdata/uv/uv.lock b/testdata/uv/uv.lock
new file mode 100644
index 0000000..666b892
--- /dev/null
+++ b/testdata/uv/uv.lock
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+
+[package.metadata]
+requires-dist = [{ name = "pendulum", specifier = ">=3.2.0" }]

From cb22673a348dc6f8baa196921ee9a9db77b39d4c Mon Sep 17 00:00:00 2001
From: Zois Pagoulatos <zpagoulatos@hotmail.com>
Date: Mon, 6 Apr 2026 23:18:16 +0200
Subject: [PATCH 6/7] ci: update all GitHub Actions to latest versions

- actions/checkout: v2/v4 -> v6
- actions/setup-go: v5 -> v6
- actions/setup-python: v5 -> v6
- astral-sh/setup-uv: v5 -> v8
- github/codeql-action/*: v1 -> v4
- Remove stale PR checkout workaround from codeql-analysis.yml
---
 .github/workflows/codeql-analysis.yml | 57 +++++----------------------
 .github/workflows/test.yml            |  8 ++--
 2 files changed, 14 insertions(+), 51 deletions(-)

diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index ef5f3d1..cb318b7 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -1,15 +1,9 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
 name: "CodeQL"
 
 on:
   push:
     branches: [master]
   pull_request:
-    # The branches below must be a subset of the branches above
     branches: [master]
   schedule:
     - cron: '0 1 * * 4'
@@ -23,50 +17,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Override automatic language detection by changing the below list
-        # Supported options are ['csharp', 'cpp', 'go', 'java', 'javascript', 'python']
         language: ['go']
-        # Learn more...
-        # https://docs.github.com/en/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#overriding-automatic-language-detection
 
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-      with:
-        # We must fetch at least the immediate parents so that if this is
-        # a pull request then we can checkout the head.
-        fetch-depth: 2
+      - name: Checkout repository
+        uses: actions/checkout@v6
 
-    # If this run was triggered by a pull request event, then checkout
-    # the head of the pull request instead of the merge commit.
-    - run: git checkout HEAD^2
-      if: ${{ github.event_name == 'pull_request' }}
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v4
+        with:
+          languages: ${{ matrix.language }}
 
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
-      with:
-        languages: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file. 
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v4
 
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-    # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 https://git.io/JvXDl
-
-    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-    #    and modify them (or add more) to build your code if your project
-    #    uses a compiled language
-
-    #- run: |
-    #   make bootstrap
-    #   make release
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v4
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c0e40e7..6f7b62e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,22 +17,22 @@ jobs:
         pm: [uv, poetry, pipenv, pip]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
           cache: true
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13"
 
       - name: Install uv
         if: matrix.pm == 'uv'
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v8
 
       - name: Install Poetry
         if: matrix.pm == 'poetry'

From 679a844180470cd04c057d491bc3cf9f9ffb1da4 Mon Sep 17 00:00:00 2001
From: Zois Pagoulatos <zpagoulatos@hotmail.com>
Date: Mon, 6 Apr 2026 23:20:19 +0200
Subject: [PATCH 7/7] ci: fix setup-uv version to v8.0.0 (no floating v8 tag
 yet)

---
 .github/workflows/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6f7b62e..eb83c60 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,7 +32,7 @@ jobs:
 
       - name: Install uv
         if: matrix.pm == 'uv'
-        uses: astral-sh/setup-uv@v8
+        uses: astral-sh/setup-uv@v8.0.0
 
       - name: Install Poetry
         if: matrix.pm == 'poetry'