use a custom console font

README.font.md

@@ -0,0 +1,31 @@
+Subiquity comes with its own console font, which differs from the
+standard one in how arrow-like glyphs are rendered; the standard font
+renders them as arrowheaded forms like → but we want solid triangles
+like ▶.
+
+I built the font like this:
+
+
+```
+$ apt source console-setup
+$ cd console-setup-*/Fonts
+$ cat > my.equivalents <<EOF
+U+2191 U+25B4 U+25B2
+# U+2191:   UPWARDS ARROW
+# U+25B4:   BLACK UP-POINTING SMALL TRIANGLE
+# U+25B2:   BLACK UP-POINTING TRIANGLE
+U+2193 U+25BE U+25BC
+# U+2193:   DOWNWARDS ARROW
+# U+25BE:   BLACK DOWN-POINTING SMALL TRIANGLE
+# U+25BC:   BLACK DOWN-POINTING TRIANGLE
+U+2190 U+25C2 U+25C0
+# U+2190:   LEFTWARDS ARROW
+# U+25C2:   BLACK LEFT-POINTING SMALL TRIANGLE
+# U+25C0:   BLACK LEFT-POINTING TRIANGLE
+U+2192 U+25B8 U+25B6
+# U+2192:   RIGHTWARDS ARROW
+# U+25B8:   BLACK RIGHT-POINTING SMALL TRIANGLE
+# U+25B6:   BLACK RIGHT-POINTING TRIANGLE
+EOF
+$ ./bdf2psf --log ./my.log  ./bdf/georgian16.bdf+./bdf/unifont.bdf+./bdf/h16.bdf+./bdf/etl16-unicode.bdf  ./standard.equivalents+./my.equivalents  ./ascii.set+./linux.set+./fontsets/Uni2.512+:./useful.set 512 ./subiquity.psf
+```

bin/subiquity-service

@@ -1,7 +1,5 @@
 #!/bin/sh
 /bin/dmesg -n 1
-loadkeys - <<EOF
- string F91 = "\033[Z"
- keycode 15 = Tab F91
-EOF
+$SNAP/usr/bin/subiquity-loadkeys
+setfont $SNAP/subiquity.psf
 /sbin/agetty -n --noclear -l $SNAP/usr/bin/python3 -o $SNAP/usr/bin/subiquity tty1 $TERM

snapcraft.yaml

@@ -71,6 +71,10 @@ parts:
       /usr/share/console-setup/kbdnames-maker /usr/share/console-setup/KeyboardNames.pl > kbdnames.txt
     stage:
       - kbdnames.txt
+  font:
+    plugin: dump
+    stage:
+      - subiquity.psf
   probert:
     plugin: python
     build-packages: [python-setuptools, libnl-3-dev, libnl-genl-3-dev, libnl-route-3-dev]

subiquity/models/keyboard.py

@@ -205,7 +205,7 @@ class KeyboardModel:
         with open(path, 'w') as fp:
             fp.write(self.setting.render())
         if self.root == '/':
-            run_command(['setupcon', '--save', '--force'])
+            run_command(['setupcon', '--save', '--force', '--keyboard-only'])
             run_command(['/snap/bin/subiquity.subiquity-loadkeys'])
         else:
             run_command(['sleep', '1'])