[NB] Add button to launch profile environment prompt

microdrop_launcher/bin/profile_launcher.py

@@ -18,7 +18,7 @@
 from ..dirs import AppDirs
 from ..config import create_config_directory
 from ..profile import (ICON_PATH, SAVED_COLUMNS, drop_version_errors,
-                       get_major_version, import_profile,
+                       environment_prompt, get_major_version, import_profile,
                        installed_major_version, launch_profile,
                        load_profiles_info, profile_major_version,
                        verify_or_create_profile_version)
@@ -229,6 +229,7 @@ def short_path(path_i):
 
         button_launch_i = gtk.Button('Launch')
         button_open_i = gtk.Button('Open')
+        button_prompt_i = gtk.Button('Prompt')
         button_remove_i = gtk.Button('Remove')
 
         # Use `functools.partial` to bind parameters (through [currying][1])
@@ -243,15 +244,20 @@ def short_path(path_i):
         on_open_clicked = ft.partial(lambda profile_path, *args:
                                      profile_path.launch(),
                                      ph.path(row_i.path))
+        on_prompt_clicked = ft.partial(lambda profile_path, *args:
+                                       environment_prompt(profile_path),
+                                       row_i.path)
         on_remove_clicked = ft.partial(lambda row, *args: remove_callback(row),
                                        row_i)
 
         button_launch_i.connect('clicked', on_launch_clicked)
         button_open_i.connect('clicked', on_open_clicked)
+        button_prompt_i.connect('clicked', on_prompt_clicked)
         button_remove_i.connect('clicked', on_remove_clicked)
         # button_remove_i.connect('clicked', lambda
         for button_ij, j in zip((button_launch_i, button_open_i,
-                                 button_remove_i), range(j + 1, j + 4)):
+                                 button_prompt_i, button_remove_i),
+                                range(j + 1, j + 5)):
             table.attach(button_ij, left_attach=j, right_attach=j + 1,
                          **row_kwargs)
 

microdrop_launcher/profile.py

@@ -1,5 +1,6 @@
 import os
 import pkg_resources
+import platform
 import re
 import subprocess as sp
 import sys
@@ -19,6 +20,7 @@
     GUI_AVAILABLE = True
     from pygtkhelpers.ui.views.command_textview import get_run_command_dialog
 
+from . import conda_prefix
 from .config import create_config_directory
 
 cre_version = re.compile(r'^(?P<major>\d+)\.')
@@ -249,6 +251,35 @@ def verify_or_create_profile_version(profile_path):
             output.write(pkg_resources.get_distribution('microdrop').version)
 
 
+def environment_prompt(profile_path):
+    '''
+    Launch command prompt window for Python environment, with environment
+    variables set for MicroDrop profile and configuration paths (non-blocking).
+
+    .. versionadded:: 0.1.post64
+    '''
+    profile_path = ph.path(profile_path)
+    config_file = profile_path.joinpath('microdrop.ini')
+
+    env = os.environ.copy()
+
+    # Set environment variables for MicroDrop profile and configuration paths.
+    env['MICRODROP_PROFILE'] = str(profile_path)
+    env['MICRODROP_CONFIG'] = str(config_file)
+
+    # Launch command prompt
+    if platform.system() == 'Windows':
+        if conda_prefix() is not None:
+            command = (r'start cmd "/K" {prefix}\Scripts\activate.bat {prefix}'
+                       .format(prefix=conda_prefix()))
+        else:
+            command = r'start cmd'
+        sp.call(command, shell=True, cwd=str(profile_path), env=env)
+    else:
+        raise RuntimeError('OS not currently supported: {}'
+                           .format(platform.system()))
+
+
 def launch_profile(profile_path):
     profile_path = ph.path(profile_path)
     verify_or_create_profile_version(profile_path)
@@ -262,12 +293,14 @@ def launch_profile(profile_path):
         # file.
         os.chdir(config_file.parent)
         return_code = None
+        env = os.environ.copy()
+        env['MICRODROP_PROFILE'] = str(profile_path)
+        env['MICRODROP_CONFIG'] = str(config_file)
         # Return code of `5` indicates program should be restarted.
         while return_code is None or return_code == 5:
             # Launch MicroDrop and save return code.
-            return_code = sp.call([sys.executable, '-m',
-                                    'microdrop.microdrop', '-c',
-                                    config_file])
+            return_code = sp.call([sys.executable, '-m', 'microdrop.microdrop',
+                                   '-c', config_file], env=env)
     finally:
         # Restore original working directory.
         os.chdir(original_directory)