Add dev bootstrapping, which i found laying around

...not sure what the status of this is, but might as well commit

dev/bootstrap.py

@@ -0,0 +1,59 @@
+# -*- coding: utf-8; -*-
+"""
+Bootstrap development for Corporal
+"""
+
+import os
+import subprocess
+import sys
+
+
+here = os.path.abspath(os.path.dirname(__file__))
+
+
+def bootstrap():
+    if not inside_virtualenv():
+        return
+
+    # install wheel
+    subprocess.run(['pip', 'install', 'wheel'],
+                   check=True)
+
+    # install invoke, sphinx
+    subprocess.run(['pip', 'install', 'invoke', 'Sphinx'],
+                   check=True)
+
+    # run bootstrap task
+    os.chdir(here)
+    try:
+        if sys.platform == 'win32':
+            completed = subprocess.run(['invoke', 'bootstrap'])
+        else:
+            completed = subprocess.run(['invoke', '--echo', 'bootstrap'])
+    except KeyboardInterrupt:
+        sys.exit(130)  # 128 + SIGINT
+    else:
+        sys.exit(completed.returncode)
+
+
+def inside_virtualenv():
+    if not (hasattr(sys, 'real_prefix') or
+            (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix)):
+        print("")
+        print("Not running inside a virtual environment!")
+        print("")
+        print("Please create and activate that first, e.g. like:")
+        print("")
+        if sys.platform == 'win32':
+            print("    py -m venv C:\\envs\\corporal")
+            print("    C:\\envs\\corporal\\Scripts\\activate.bat")
+        else:
+            print("    python -m venv /srv/envs/corporal")
+            print("    source /srv/envs/corporal/bin/activate")
+        print("")
+        return False
+    return True
+
+
+if __name__ == '__main__':
+    bootstrap()