diff --git a/pyproject.toml b/pyproject.toml
index 7fcc16b..558f0ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,6 +58,9 @@ quote-style = "single"
 inline-quotes = "single"
 docstring-quotes = "double"
 
+[tool.ruff.lint.pydocstyle]
+convention = "numpy"
+
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
diff --git a/src/glicid_spawner/__init__.py b/src/glicid_spawner/__init__.py
index c298340..95a8eb5 100644
--- a/src/glicid_spawner/__init__.py
+++ b/src/glicid_spawner/__init__.py
@@ -4,8 +4,6 @@ from importlib.metadata import version
 
 from .spawner import GlicidSpawner
 
-__all__ = [
-    'GlicidSpawner',
-]
+__all__ = ['GlicidSpawner']
 
 __version__ = version('glicid-spawner')
diff --git a/src/glicid_spawner/pyenv.py b/src/glicid_spawner/pyenv.py
new file mode 100644
index 0000000..4ec2206
--- /dev/null
+++ b/src/glicid_spawner/pyenv.py
@@ -0,0 +1,65 @@
+"""Python environment module."""
+
+from dataclasses import dataclass
+
+
+@dataclass
+class PyEnv:
+    """Python environment generic class."""
+
+    name: str
+    path: str
+
+    def __eq__(self, item):
+        return self.path == str(item)
+
+
+class UserPyEnv(PyEnv):
+    """User python environment."""
+
+    scope = 'USER'
+
+
+class TeamPyEnv(PyEnv):
+    """Team python environment."""
+
+    scope = 'TEAM'
+
+
+class GlobalPyEnv(PyEnv):
+    """Global python environment."""
+
+    scope = 'GLOBAL'
+
+
+def get_pyenv_user(username: str) -> list:
+    """List of python environment available to the user."""
+    return [
+        # Dummy values
+        UserPyEnv('base', f'/micromamba/{username}'),
+        UserPyEnv('pytorch', f'/micromamba/{username}/envs/pytorch'),
+    ]
+
+
+def get_pyenv_team() -> list:
+    """List of python environment available to the user's team."""
+    return [
+        # Dummy values
+        TeamPyEnv(
+            'nuts-workshop', '/micromamba/operator/share/nuts-workshop-team/env/envs/nuts-workshop'
+        ),
+    ]
+
+
+def get_pyenv_global() -> list:
+    """List of python environment available globally."""
+    return [
+        # Dummy values
+        GlobalPyEnv('base', '/micromamba/operator/envs/base'),
+        GlobalPyEnv('data-science', '/micromamba/operator/envs/data-science'),
+    ]
+
+
+def get_pyenv(username: str) -> list:
+    """List of all the python environment available to a user."""
+    return get_pyenv_user() + get_pyenv_team() + get_pyenv_global()
diff --git a/src/glicid_spawner/spawner.py b/src/glicid_spawner/spawner.py
index ffed7f5..1d516a4 100644
--- a/src/glicid_spawner/spawner.py
+++ b/src/glicid_spawner/spawner.py
@@ -1,51 +1,28 @@
 """GLiCID spawner module."""
 
-import shlex
-
 from batchspawner import SlurmSpawner
+from jinja2 import Environment, PackageLoader, select_autoescape
+
+from .pyenv import get_pyenv
 
 
 class GlicidSpawner(SlurmSpawner):
     """Glicid SLURM Spawner."""
 
-    def _options_form_default(self):
-        default_env = f'YOURNAME={self.user.name}\n'
-        return f"""
-        <div class="form-group">
-            <label for="args">Extra notebook CLI arguments</label>
-            <input name="args" class="form-control"
-                placeholder="e.g. --debug"></input>
-        </div>
-        <div class="form-group">
-            <label for="env">Environment variables (one per line)</label>
-            <textarea class="form-control" name="env">{default_env}</textarea>
-        </div>
-        """
+    def _options_form_default(self) -> str:
+        """JupyterHub rendered form template."""
+        environment = Environment(
+            loader=PackageLoader('glicid_spawner'),
+            autoescape=select_autoescape(),
+        )
+        template = environment.get_template('interactive.html')
 
-    def options_from_form(self, formdata):
+        return template.render(
+            username=self.user.name,
+            python_envs=get_pyenv(self.user.name),
+        )
+
+    def options_from_form(self, formdata) -> dict:
         options = {}
-        options['env'] = env = {}
-
-        env_lines = formdata.get('env', [''])
-        for line in env_lines[0].splitlines():
-            if line:
-                key, value = line.split('=', 1)
-                env[key.strip()] = value.strip()
-
-        arg_s = formdata.get('args', [''])[0].strip()
-        if arg_s:
-            options['argv'] = shlex.split(arg_s)
+        options['pyenv'] = formdata['python-env'][0]
         return options
-
-    def get_args(self):
-        """Return arguments to pass to the notebook server"""
-        argv = super().get_args()
-        if self.user_options.get('argv'):
-            argv.extend(self.user_options['argv'])
-        return argv
-
-    def get_env(self):
-        env = super().get_env()
-        if self.user_options.get('env'):
-            env.update(self.user_options['env'])
-        return env
diff --git a/src/glicid_spawner/templates/interactive.html b/src/glicid_spawner/templates/interactive.html
new file mode 100644
index 0000000..df5772b
--- /dev/null
+++ b/src/glicid_spawner/templates/interactive.html
@@ -0,0 +1,19 @@
+<div class="form-horizontal">
+    <div class="form-group">
+        <label for="username" class="col-sm-3 control-label">Username:</label>
+        <div class="col-sm-9">
+            <input class="form-control" name="username" type="text" placeholder="{{username}}" disabled>
+        </div>
+    </div>
+    <div class="form-group">
+        <label for="username" class="col-sm-3 control-label">Python environment:</label>
+        <div class="col-sm-9">
+            <select class="form-control" name="python-env">
+                {%- for pyenv in python_envs -%}
+                <option value="{{pyenv.path}}">{{pyenv.name}} ({{pyenv.scope | upper}})</option>
+                {% endfor -%}
+            </select>
+            <input class="form-control" name="username" type="text" placeholder="{username}" disabled>
+        </div>
+    </div>
+</div>