forked from mirrors/nixpkgs
6e5d2f8963
Checking the keyboard layout has been a long set of hurdles so far, with several attempts. Originally, the checking was introduced by @lheckemann in #23709. The initial implementation just was trying to check whether the symbols/ directory contained the layout name. Unfortunately, that wasn't enough and keyboard variants weren't recognized, so if you set layout to eg. "dvorak" it will fail with an error (#25526). So my improvement on that was to use sed to filter rules/base.lst and match the layout against that. I fucked up twice with this, first because layout can be a comma-separated list which I didn't account for and second because I ran into a Nix issue (NixOS/nix#1426). After fixing this, it still wasn't enough (and this is btw. what localectl also does), because we were *only* matching rules but not symbols, so using "eu" as a layout won't work either. I decided now it's the time to actually use libxkbcommon to try compiling the keyboard options and see whether it succeeds. This comes in the form of a helper tool called xkbvalidate. IMHO this approach is a lot less error-prone and we can be sure that we don't forget about anything because that's what the X server itself uses to compile the keymap. Another advantage of this is that we now validate the full set of XKB options rather than just the layout. Tested this against a variety of wrong and correct keyboard configurations and against the "keymap" NixOS VM tests. Signed-off-by: aszlig <aszlig@redmoonstudios.org> Cc: @lheckemann, @peti, @7c6f434c, @tohl, @vcunat, @lluchs Fixes: #27597
16 lines
424 B
Nix
16 lines
424 B
Nix
{ lib, runCommandCC, libxkbcommon }:
|
|
|
|
runCommandCC "xkbvalidate" {
|
|
buildInputs = [ libxkbcommon ];
|
|
meta = {
|
|
description = "NixOS tool to validate X keyboard configuration";
|
|
license = lib.licenses.mit;
|
|
platforms = lib.platforms.linux;
|
|
maintainers = [ lib.maintainers.aszlig ];
|
|
};
|
|
} ''
|
|
mkdir -p "$out/bin"
|
|
gcc -std=gnu11 -Wall -pedantic -lxkbcommon ${./xkbvalidate.c} \
|
|
-o "$out/bin/validate"
|
|
''
|