Added the pip user control flag

doc/configuration.md

@@ -174,3 +174,4 @@ The following are reserved configuration variables that modify Appier's behavior
 | **LOCALE** | `str` | The default locale value to be used for  language, region and any special variant preferences. |
 | **APPIER_BASE_PATH** | `str` | Override the default base path for the app (calculated as a relative directory to the main app file) (default: `None`). |
 | **HIGHLIGHTER** | `str` | The name of the syntax highlighting library to be used in the main set of Appier pages, including the default HTML error page (eg: `prism`, `highlight.js`) (default: `prism`). |
+| **PIP_USER** | `bool` | If the appier controller `pip_install` operation should be done at an user level. |

src/appier/util.py

@@ -56,6 +56,7 @@
 import subprocess
 
 from . import smtp
+from . import config
 from . import legacy
 from . import common
 from . import defines
@@ -404,10 +405,11 @@ def ensure_pip(name, package = None, delayed = False):
     except ImportError:
         install_pip_s(package, delayed = delayed)
 
-def install_pip(package, delayed = False, user = False):
+def install_pip(package, delayed = False, user = None):
     import pip #@UnusedImport
     try: import pip._internal
     except ImportError: pip._internal = None
+    user = config.conf("PIP_USER", False, cast = bool)
     args = ["install", package]
     if hasattr(pip._internal, "main"): pip_main = pip._internal.main
     else: pip_main = pip.main #@UndefinedVariable