installer enhancements

- Detect when install failed for some reason and print helpful error
  message rather than stack trace.

- Detect window size and resize to minimum acceptable values to provide
  better display of configure and install forms.

installer/lib/installer.py

@@ -346,7 +346,21 @@ class InvokeAiInstance:
         # NOTE: currently the config script does its own arg parsing! this means the command-line switches
         # from the installer will also automatically propagate down to the config script.
         # this may change in the future with config refactoring!
+        succeeded = False
+        try:
             invokeai_configure.main()
+            succeeded = True
+        except ConnectionError as e:
+            print(f'A network error was encountered during configuration and download: {str(e)}')
+        except OSError as e:
+            print(f'An OS error was encountered during configuration and download: {str(e)}')
+        except Exception as e:
+            print(f'A problem was encountered during the configuration and download steps: {str(e)}')
+        finally:
+            if not succeeded:
+                print('You may be able to finish the process by launching "invoke.sh" or "invoke.bat"')
+                print('from within the "invokeai" directory, and choosing options 5 and/or 6.')
+                print('Alternatively you can relaunch the installer.')
 
     def install_user_scripts(self):
         """

ldm/invoke/config/invokeai_configure.py

@@ -8,7 +8,6 @@
 #
 print("Loading Python libraries...\n")
 import argparse
-import curses
 import io
 import os
 import re
@@ -19,6 +18,7 @@ import warnings
 from argparse import Namespace
 from pathlib import Path
 from urllib import request
+from shutil import get_terminal_size
 
 import npyscreen
 import torch
@@ -46,7 +46,8 @@ from .model_install_backend import (
     recommended_datasets,
     hf_download_with_resume,
 )
-from .widgets import IntTitleSlider, CenteredButtonPress
+from .widgets import IntTitleSlider, CenteredButtonPress, set_min_terminal_size
+
 
 warnings.filterwarnings("ignore")
 
@@ -64,6 +65,10 @@ SD_Configs = Path(global_config_dir()) / "stable-diffusion"
 
 Datasets = OmegaConf.load(Dataset_path)
 
+# minimum size for the UI
+MIN_COLS = 120
+MIN_LINES = 45
+
 INIT_FILE_PREAMBLE = """# InvokeAI initialization file
 # This is the InvokeAI initialization file, which contains command-line default values.
 # Feel free to edit. If anything goes wrong, you can re-initialize this file by deleting
@@ -109,8 +114,6 @@ Add the '--help' argument to see all of the command-line switches available for
 
 # ---------------------------------------------
 def yes_or_no(prompt: str, default_yes=True):
-    completer.set_options(["yes", "no"])
-    completer.complete_extensions(None)  # turn off path-completion mode
     default = "y" if default_yes else "n"
     response = input(f"{prompt} [{default}] ") or default
     if default_yes:
@@ -332,8 +335,7 @@ class editOptsForm(npyscreen.FormMultiPage):
         old_opts = self.parentApp.invokeai_opts
         first_time = not (Globals.root / Globals.initfile).exists()
         access_token = HfFolder.get_token()
-
-        window_height, window_width = curses.initscr().getmaxyx()
+        window_width,window_height = get_terminal_size()
         for i in [
             "Configure startup settings. You can come back and change these later.",
             "Use ctrl-N and ctrl-P to move to the <N>ext and <P>revious fields.",
@@ -676,6 +678,8 @@ def run_console_ui(
 ) -> (Namespace, Namespace):
     # parse_args() will read from init file if present
     invokeai_opts = default_startup_options(initfile)
+
+    set_min_terminal_size(MIN_COLS, MIN_LINES)
     editApp = EditOptApplication(program_opts, invokeai_opts)
     editApp.run()
     if editApp.user_cancelled:
@@ -683,7 +687,6 @@ def run_console_ui(
     else:
         return (editApp.new_opts, editApp.user_selections)
 
-
 # -------------------------------------
 def write_opts(opts: Namespace, init_file: Path):
     """

ldm/invoke/config/model_install.py

@@ -10,7 +10,6 @@ The work is actually done in backend code in model_install_backend.py.
 """
 
 import argparse
-import curses
 import os
 import sys
 import traceback
@@ -22,15 +21,23 @@ import npyscreen
 import torch
 from npyscreen import widget
 from omegaconf import OmegaConf
+from shutil import get_terminal_size
 
 from ..devices import choose_precision, choose_torch_device
 from ..globals import Globals, global_config_dir
 from .model_install_backend import (Dataset_path, default_config_file,
                                     default_dataset, get_root,
                                     install_requested_models,
-                                    recommended_datasets)
+                                    recommended_datasets,
+                                    )
 from .widgets import (MultiSelectColumns, TextBox,
-                      OffsetButtonPress, CenteredTitleText)
+                      OffsetButtonPress, CenteredTitleText,
+                      set_min_terminal_size,
+                      )
+
+# minimum size for the UI
+MIN_COLS = 120
+MIN_LINES = 45
 
 class addModelsForm(npyscreen.FormMultiPage):
     # for responsive resizing - disabled
@@ -50,7 +57,7 @@ class addModelsForm(npyscreen.FormMultiPage):
         super().__init__(parentApp=parentApp, name=name, *args, **keywords)
 
     def create(self):
-        window_height, window_width = curses.initscr().getmaxyx()
+        window_width, window_height = get_terminal_size()
         starter_model_labels = self._get_starter_model_labels()
         recommended_models = [
             x
@@ -249,7 +256,7 @@ class addModelsForm(npyscreen.FormMultiPage):
         )
 
     def _get_starter_model_labels(self) -> List[str]:
-        window_height, window_width = curses.initscr().getmaxyx()
+        window_width, window_height = get_terminal_size()
         label_width = 25
         checkbox_width = 4
         spacing_width = 2
@@ -268,7 +275,7 @@ class addModelsForm(npyscreen.FormMultiPage):
         ]
 
     def _get_columns(self) -> int:
-        window_height, window_width = curses.initscr().getmaxyx()
+        window_width, window_height = get_terminal_size()
         cols = (
             4
             if window_width > 240
@@ -362,7 +369,6 @@ class AddModelApplication(npyscreen.NPSAppManaged):
             "MAIN", addModelsForm, name="Install Stable Diffusion Models"
         )
 
-
 # --------------------------------------------------------
 def process_and_execute(opt: Namespace, selections: Namespace):
     models_to_remove = [
@@ -409,6 +415,7 @@ def select_and_download_models(opt: Namespace):
             precision=precision,
         )
     else:
+        set_min_terminal_size(MIN_COLS, MIN_LINES)
         installApp = AddModelApplication()
         installApp.run()
 

ldm/invoke/config/model_install_backend.py

@@ -67,6 +67,9 @@ def install_requested_models(
         purge_deleted: bool = False,
         config_file_path: Path = None,
 ):
+    '''
+    Entry point for installing/deleting starter models, or installing external models.
+    '''
     config_file_path=config_file_path or default_config_file()
     if not config_file_path.exists():
         open(config_file_path,'w')

ldm/invoke/config/widgets.py

@@ -2,8 +2,34 @@
 Widget class definitions used by model_select.py, merge_diffusers.py and textual_inversion.py
 '''
 import math
+import platform
 import npyscreen
+import sys
 import curses
+import termios
+import struct
+import fcntl
+
+from shutil import get_terminal_size
+
+# -------------------------------------
+def set_terminal_size(columns: int, lines: int):
+    os = platform.uname().system
+    if os=="Windows":
+        os.system(f'mode con: cols={columns} lines={lines}')
+    elif os in ['Darwin', 'Linux']:
+        winsize = struct.pack("HHHH", lines, columns, 0, 0)
+        fcntl.ioctl(0, termios.TIOCSWINSZ, winsize)
+        sys.stdout.write("\x1b[8;{rows};{cols}t".format(rows=lines, cols=columns))
+        sys.stdout.flush()
+    
+
+def set_min_terminal_size(min_cols: int, min_lines: int):
+    # make sure there's enough room for the ui
+    term_cols, term_lines = get_terminal_size()
+    cols  = max(term_cols, min_cols)
+    lines = max(term_lines, min_lines)
+    set_terminal_size(cols,lines)
 
 class IntSlider(npyscreen.Slider):
     def translate_value(self):
@@ -23,7 +49,6 @@ class CenteredTitleText(npyscreen.TitleText):
         maxy, maxx = self.parent.curses_pad.getmaxyx()
         label = self.name
         self.relx = (maxx - len(label)) // 2
-        begin_entry_at = -self.relx + 2
     
 # -------------------------------------
 class CenteredButtonPress(npyscreen.ButtonPress):