fix: include python in nixpack

Author: ImLunaHey

nixpacks.toml

@@ -3,11 +3,33 @@
 NPM_CONFIG_UPDATE_NOTIFIER = 'false'
 NPM_CONFIG_FUND = 'false'
 
+# Python configuration
+PYTHONUNBUFFERED = '1'
+PYTHONDONTWRITEBYTECODE = '1'
+POETRY_VERSION = '1.4.2'      # Optional: specify Poetry version if you're using it
+PYTHON_VERSION = '3.11'       # Specify your desired Python version
+
+[phases.setup]
+nixPkgs = [
+    'python311',                    # Python 3.11
+    'python311Packages.pip',
+    'python311Packages.setuptools',
+    'python311Packages.wheel',
+]
+
 [phases.caddy]
 dependsOn = ['setup']
 nixpkgsArchive = 'ba913eda2df8eb72147259189d55932012df6301'
 nixPkgs = ['caddy']
 
+[phases.install]
+dependsOn = ['setup']
+cmds = [
+    'python -m pip install --upgrade pip',
+    # Add your pip install commands here, for example:
+    # 'pip install -r requirements.txt'
+]
+
 [phases.fmt]
 dependsOn = ['caddy']
 cmds = ['caddy fmt --overwrite Caddyfile']