Install script improvements (#2786)

* Install script improvements

- Check anaconda and improve tab completion set up
- Clearer message for native dependencies
- Change SHA256

* Change shasum

scripts/curl_install_pypi/install

@@ -9,7 +9,7 @@
 # Bash script to install the Azure CLI
 #
 INSTALL_SCRIPT_URL="https://azurecliprod.blob.core.windows.net/install.py"
-INSTALL_SCRIPT_SHA256=097a294e3e200870e250fcb57ada74f06de94b2929f3f347ae0afd78323fafa5
+INSTALL_SCRIPT_SHA256=9fc71faaa27588835b56c22e39860627be097352354b7fcb062da4e833989630
 _TTY=/dev/tty
 
 install_script=$(mktemp -t azure_cli_install_tmp_XXXX) || exit

scripts/curl_install_pypi/install.py

@@ -203,6 +203,14 @@ def _get_default_rc_file():
         return USER_BASH_PROFILE
     return USER_BASH_RC if bashrc_exists else None
 
+def _default_rc_file_creation_step():
+    rcfile = USER_BASH_PROFILE if platform.system().lower() == 'darwin' else USER_BASH_RC
+    ans_yes = prompt_y_n('Could not automatically find a suitable file to use. Create {} now?'.format(rcfile), default='y')
+    if ans_yes:
+        open(rcfile, 'a').close()
+        return rcfile
+    return None
+
 def _find_line_in_file(file_path, search_pattern):
     try:
         with open(file_path, 'r') as search_file:
@@ -224,14 +232,17 @@ def create_tab_completion_file(filename):
     print_status("Created tab completion file at '{}'".format(filename))
 
 def get_rc_file_path():
-    rc_file_path = None
-    while not rc_file_path:
-        rc_file = prompt_input_with_default('Enter a path to an rc file to update', _get_default_rc_file())
+    rc_file = None
+    default_rc_file = _get_default_rc_file()
+    if not default_rc_file:
+        rc_file = _default_rc_file_creation_step()
+    rc_file = rc_file or prompt_input_with_default('Enter a path to an rc file to update', default_rc_file)
+    if rc_file:
         rc_file_path = os.path.realpath(os.path.expanduser(rc_file))
-        if not os.path.isfile(rc_file_path):
-            # Ask user again as it is not a file
-            rc_file_path = None
-    return rc_file_path
+        if os.path.isfile(rc_file_path):
+            return rc_file_path
+        print_status("The file '{}' could not be found.".format(rc_file_path))
+    return None
 
 def warn_other_azs_on_path(exec_dir, exec_filepath):
     env_path = os.environ.get('PATH')
@@ -251,6 +262,8 @@ def handle_path_and_tab_completion(completion_file_path, exec_filepath, exec_dir
     ans_yes = prompt_y_n('Modify profile to update your $PATH and enable shell/tab completion now?', 'y')
     if ans_yes:
         rc_file_path = get_rc_file_path()
+        if not rc_file_path:
+            raise CLIInstallError('No suitable profile file found.')
         _backup_rc(rc_file_path)
         line_to_add = "export PATH=$PATH:{}".format(exec_dir)
         _modify_rc(rc_file_path, line_to_add)
@@ -271,6 +284,9 @@ def verify_python_version():
     v = sys.version_info
     if v < (2, 7):
         raise CLIInstallError('The CLI does not support Python versions less than 2.7.')
+    if 'conda' in sys.version:
+        raise CLIInstallError("This script does not support the Python Anaconda environment. "
+                              "Create an Anaconda virtual environment and install with 'pip'")
     print_status('Python version {}.{}.{} okay.'.format(v.major, v.minor, v.micro))
 
 def _native_dependencies_for_dist(verify_cmd_args, install_cmd_args, dep_list):
@@ -282,7 +298,7 @@ def _native_dependencies_for_dist(verify_cmd_args, install_cmd_args, dep_list):
         err_msg = 'One or more of the following native dependencies are not currently installed and may be required.\n'
         err_msg += '"{}"'.format(' '.join(install_cmd_args + dep_list))
         print_status(err_msg)
-        ans_yes = prompt_y_n('Attempt to continue anyway?', 'n')
+        ans_yes = prompt_y_n('Missing native dependencies. Attempt to continue anyway?', 'n')
         if not ans_yes:
             raise CLIInstallError('Please install the native dependencies and try again.')