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nixos/extra-layouts: avoid all rebuilds

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Just setting the XKB_CONFIG_ROOT should be enough, so we don't need to
rebuild the xserver, xkbcomp and other packages anymore.
However, the variable has to be passed explicitely to scripts running at
build time: in particular to xkbvalidate and xkb-console-keymap.
This commit is contained in:
rnhmjoj 2021-09-17 01:39:38 +02:00
parent 2a58c796aa
commit e4da1edf8b
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GPG Key ID: BFBAF4C975F76450
3 changed files with 14 additions and 47 deletions
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6
nixos/modules/config/console.nix
View File

@ -116,7 +116,11 @@ in
{ console.keyMap = with config.services.xserver;
mkIf cfg.useXkbConfig
(pkgs.runCommand "xkb-console-keymap" { preferLocalBuild = true; } ''
'${pkgs.ckbcomp}/bin/ckbcomp' -model '${xkbModel}' -layout '${layout}' \
'${pkgs.ckbcomp}/bin/ckbcomp' \
${optionalString (config.environment.sessionVariables ? XKB_CONFIG_ROOT)
"-I${config.environment.sessionVariables.XKB_CONFIG_ROOT}"
} \
-model '${xkbModel}' -layout '${layout}' \
-option '${xkbOptions}' -variant '${xkbVariant}' > "$out"
'');
}

52
nixos/modules/services/x11/extra-layouts.nix
View File

@ -79,6 +79,10 @@ let
};
};
xkb_patched = pkgs.xorg.xkeyboardconfig_custom {
layouts = config.services.xserver.extraLayouts;
};
in
{
@ -114,58 +118,14 @@ in
config = mkIf (layouts != { }) {
# We don't override xkeyboard_config directly to
# reduce the amount of packages to be recompiled.
# Only the following packages are necessary to set
# a custom layout anyway:
nixpkgs.overlays = lib.singleton (self: super: {
xkb_patched = self.xorg.xkeyboardconfig_custom {
layouts = config.services.xserver.extraLayouts;
};
xorg = super.xorg // {
xorgserver = super.xorg.xorgserver.overrideAttrs (old: {
configureFlags = old.configureFlags ++ [
"--with-xkb-bin-directory=${self.xorg.xkbcomp}/bin"
"--with-xkb-path=${self.xkb_patched}/share/X11/xkb"
];
});
setxkbmap = super.xorg.setxkbmap.overrideAttrs (old: {
postInstall =
''
mkdir -p $out/share
ln -sfn ${self.xkb_patched}/etc/X11 $out/share/X11
'';
});
xkbcomp = super.xorg.xkbcomp.overrideAttrs (old: {
configureFlags = [ "--with-xkb-config-root=${self.xkb_patched}/share/X11/xkb" ];
});
};
ckbcomp = super.ckbcomp.override {
xkeyboard_config = self.xkb_patched;
};
xkbvalidate = super.xkbvalidate.override {
libxkbcommon = self.libxkbcommon.override {
xkeyboard_config = self.xkb_patched;
};
};
});
environment.sessionVariables = {
# runtime override supported by multiple libraries e. g. libxkbcommon
# https://xkbcommon.org/doc/current/group__include-path.html
XKB_CONFIG_ROOT = "${pkgs.xkb_patched}/etc/X11/xkb";
XKB_CONFIG_ROOT = "${xkb_patched}/etc/X11/xkb";
};
services.xserver = {
xkbDir = "${pkgs.xkb_patched}/etc/X11/xkb";
xkbDir = "${xkb_patched}/etc/X11/xkb";
exportConfiguration = config.services.xserver.displayManager.startx.enable
|| config.services.xserver.displayManager.sx.enable;
};

3
nixos/modules/services/x11/xserver.nix
View File

@ -738,6 +738,9 @@ in
nativeBuildInputs = with pkgs.buildPackages; [ xkbvalidate ];
preferLocalBuild = true;
} ''
${optionalString (config.environment.sessionVariables ? XKB_CONFIG_ROOT)
"export XKB_CONFIG_ROOT=${config.environment.sessionVariables.XKB_CONFIG_ROOT}"
}
xkbvalidate "$xkbModel" "$layout" "$xkbVariant" "$xkbOptions"
touch "$out"
'');