add template for pipenv, update install routine

README.md

@@ -169,6 +169,19 @@ $ git commit
 This allows the user to choose whether to execute the hooks by activating the
 virtual environment or to ignore them by deactivating it.
 
+### Auto Installation as an alternative
+
+There might be use cases where you want the Git hooks to be installed 
+automatically at build time of the `Pipenv`. To enable this, you have to add 
+an option
+```
+auto-install = true
+```
+to your `pyproject.toml`. Furthermore, the automatic installation 
+only works if `autohooks` is installed via the Git repository
+as explained above. Otherwise, you have to run `pipenv run autohooks activate`
+manually.
+
 ## Plugins
 
 * Python code formatting via [black](https://github.com/greenbone/autohooks-plugin-black)

autohooks/config.py

@@ -64,6 +64,10 @@ def get_pre_commit_script_names(self):
     def get_config(self):
         return self._config
 
+    def get_auto_install(self):
+        if self.has_autohooks_config():
+            return self._autohooks_config.get_value('auto-install', False)
+
 
 def load_config_from_pyproject_toml(pyproject_toml=None):
     if pyproject_toml is None:

autohooks/install.py

@@ -17,13 +17,17 @@
 
 import shutil
 
-from setuptools.command.install import install
 from setuptools.command.develop import develop
+from setuptools.command.install import install
 
+from autohooks.config import load_config_from_pyproject_toml
 from autohooks.utils import (
     get_git_hook_directory_path,
     get_autohooks_directory_path,
-)
+    get_pyproject_toml_path)
+
+pyproject_toml = get_pyproject_toml_path()
+config = load_config_from_pyproject_toml(pyproject_toml)
 
 
 def get_pre_commit_hook_path():
@@ -32,8 +36,12 @@ def get_pre_commit_hook_path():
 
 
 def get_pre_commit_hook_template_path():
-    setup_dir_path = get_autohooks_directory_path()
-    return setup_dir_path / 'precommit' / 'template'
+    auto_install = config.get_auto_install()
+
+    setup_dir_path = get_autohooks_directory_path() / 'precommit'
+    if auto_install:
+        return setup_dir_path / 'template_pipenv'
+    return setup_dir_path / 'template'
 
 
 def install_pre_commit_hook(pre_commit_hook_file, pre_commit_hook):

autohooks/precommit/template_pipenv

@@ -0,0 +1,11 @@
+#!/usr/bin/env pipenv run python3
+
+import sys
+
+try:
+    from autohooks.precommit import run
+    sys.exit(run())
+except ImportError:
+    print('autohooks not installed. Ignoring pre-commit hook.')
+    sys.exit(0)
+