Hardware fixes: issue version, installer Cyrillic, console TUIs (0.9.2)

- /etc/issue shows the Das OS version instead of the kernel's; the server
  installer carries it into the installed system.
- das-server-installer: setfont -C /dev/tty0 before the language menu
  (sudo runs it in its own pty, so the Cyrillic was drawn as Latin), and
  floppy drives are no longer offered as install targets.
- ncdu on the desktop image and in das-server 0.4.0.
- das-shell 0.2.0: each prompt line sets its own color; the dbanner start
  screen buttons are no longer covered by the key bar; on the Linux
  console (TERM=linux) dprompt and dbanner draw solid borders and swap
  the glyphs that no console font has (▊▎▔▁ and others) for ones it has.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

srcpkgs/das-shell/files/python/das_shell/banner_app.py

@@ -17,7 +17,7 @@ from textual.widgets import (Button, Checkbox, Footer, Header, Input, Label, Lis
 from . import banner, widgets
 from .canvas import TOOLS, Canvas
 from .i18n import t, title
-from .tui_common import AskDialog, Swatches, run_as_root
+from .tui_common import AskDialog, Swatches, console_mode, run_as_root
 
 TOOL_NAMES = {
     "pen": ("Олівець", "Pen"), "eraser": ("Гумка", "Eraser"), "line": ("Лінія", "Line"),
@@ -657,7 +657,8 @@ class StartScreen(Screen):
     CSS = """
     #list { width: 46; border-right: solid $primary; }
     #start_preview { padding: 0 1; }
-    .buttons { height: 3; dock: bottom; }
+    #start_main { height: 1fr; }
+    .buttons { height: auto; }
     .buttons Button { margin-right: 1; }
     """
     BINDINGS = [
@@ -671,7 +672,7 @@ class StartScreen(Screen):
 
     def compose(self):
         yield Header()
-        with Horizontal():
+        with Horizontal(id="start_main"):
             yield ListView(id="list")
             yield VerticalScroll(Static(id="start_preview"))
         with Horizontal(classes="buttons"):
@@ -769,6 +770,7 @@ class BannerApp(App):
 
     def __init__(self):
         # The terminal's own 16 colors: the picture looks as it will at login
+        console_mode()
         super().__init__(ansi_color=True)
 
     def on_mount(self):

srcpkgs/das-shell/files/python/das_shell/prompt.py

@@ -275,6 +275,10 @@ class _Bash:
                 current = style
             if isinstance(p, Lit):
                 out.append(_ps1_text(self.glyphs(p.text)))
+                if p.text.endswith("\n"):
+                    # Readline redraws only the last line of the prompt, so
+                    # each line has to set its color again
+                    current = None
             elif isinstance(p, Esc):
                 out.append(p.code)
             elif isinstance(p, Dyn):

srcpkgs/das-shell/files/python/das_shell/prompt_app.py

@@ -13,7 +13,7 @@ from textual.widgets import Button, Checkbox, Footer, Header, Input, Label, List
 from . import prompt
 from .cli_prompt import apply as apply_design, current
 from .i18n import t
-from .tui_common import NONE, AskDialog, color_options, color_value, run_as_root, to_select
+from .tui_common import NONE, AskDialog, color_options, color_value, console_mode, run_as_root, to_select
 
 # Settings of each segment type: (key, kind, Ukrainian label, English label)
 COLOR_KEYS = [("fg", "color", "Колір", "Color"), ("bold", "bool", "Жирний", "Bold")]
@@ -83,6 +83,7 @@ class PromptApp(App):
 
     def __init__(self, design=None):
         # The terminal's own 16 colors, as the prompt will use them
+        console_mode()
         super().__init__(ansi_color=True)
         self.design, self.source = (design, None) if design else current()
         self.design = prompt.normalize(self.design)

srcpkgs/das-shell/files/python/das_shell/tui_common.py

@@ -15,9 +15,39 @@ from textual.widgets import Button, Input, Label, Select
 
 from . import colors
 from .i18n import t
+from .prompt import CONSOLE_GLYPHS as PROMPT_CONSOLE_GLYPHS
 
 NONE = "-"  # Select has no None value
 
+# The Linux console's fonts hold at most 512 glyphs (cyr-sun16, Terminus: none has
+# the eighth blocks ▊▎▔▁ Textual draws buttons, inputs and lists with), so the
+# missing ones come out as squares. There we draw with what the fonts do have.
+CONSOLE = os.environ.get("TERM") == "linux"
+CONSOLE_BORDERS = ("tall", "wide", "panel", "tab", "hkey", "vkey", "round", "heavy", "dashed", "inner", "outer")
+CONSOLE_GLYPHS = str.maketrans({
+    **PROMPT_CONSOLE_GLYPHS,
+    "▁": "▄", "▂": "▄", "▃": "▄", "▅": "▄", "▆": "▄", "▇": "█", "▔": "▀", "▉": "█",
+    "▊": "▌", "▋": "▌", "▍": "▌", "▎": "▌", "▏": "▌", "▕": "▐",
+    "━": "─", "╸": "─", "╺": "─", "┃": "│", "┏": "┌", "┓": "┐", "┗": "└", "┛": "┘",
+    "╭": "┌", "╮": "┐", "╰": "└", "╯": "┘", "╱": "/", "╲": "\\",
+    "—": "-", "…": ".", "×": "x", "✕": "x", "✓": "v", "☑": "x", "○": "o", "⭘": "o", "◢": "▀",
+})
+
+
+def console_mode():
+    """On the Linux console: swaps the borders and glyphs its fonts lack. Call
+    before the app starts."""
+    if not CONSOLE:
+        return
+    from textual import _border
+    from textual.drivers.linux_driver import LinuxDriver
+    for kind in CONSOLE_BORDERS:
+        _border.BORDER_CHARS[kind] = _border.BORDER_CHARS["solid"]
+        _border.BORDER_LOCATIONS[kind] = _border.BORDER_LOCATIONS["solid"]
+    _border.get_box.cache_clear()
+    write = LinuxDriver.write
+    LinuxDriver.write = lambda self, data: write(self, data.translate(CONSOLE_GLYPHS))
+
 
 def color_options(allow_none=True):
     names = {

srcpkgs/das-shell/files/tests/test_prompt.py

@@ -35,6 +35,11 @@ class PresetTest(unittest.TestCase):
         self.assertNotIn("──", text(d))
         self.assertIn("─[main*]─[.venv]─[jobs:2]", text(d, git="main*", venv=".venv", jobs=2))
 
+    def test_each_line_sets_its_color(self):
+        # Readline redraws only the last line, so it must not rely on the first
+        ps1 = prompt.script(prompt.load_preset("das")).split("PS1='", 1)[1].split("'", 1)[0]
+        self.assertTrue(ps1.split("\n")[1].startswith("\\[\\e[0;31m\\]└"), ps1)
+
     def test_unknown_segments_are_dropped(self):
         d = prompt.normalize({"segments": [{"type": "nope"}, {"type": "cwd"}]})
         self.assertEqual([s["type"] for s in d["segments"]], ["cwd"])