Fix locale regression in GNOME (#886)

kachick · Oct 23, 2024 · 0ac564f · 0ac564f
1 parent 675e56d
commit 0ac564f
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Showing 3 changed files with 16 additions and 5 deletions.
diff --git a/home-manager/common.nix b/home-manager/common.nix
@@ -50,11 +50,6 @@
       MANPAGER = "${lib.getExe pkgs.bashInteractive} -c '${pkgs.util-linux}/bin/col -bx | ${lib.getExe pkgs.bat} -l man -p'";
       MANROFFOPT = "-c";
 
-      # - You can check the candidates in `locale -a`
-      # - pkgs.glibc installs many candidates, but it does not support darwin
-      # This value may overrides NixOS config for GNOME
-      # LANG = "en_US.UTF-8";
-
       # NOTE: Original comments in zsh
       # Mouse-wheel scrolling has been disabled by -X (disable screen clearing).
       # Remove -X and -F (exit if the content fits on one screen) to enable it.
@@ -82,10 +77,13 @@
       inherit homemade-pkgs;
     };
 
+    # You can check the candidates in `locale -a`
+    # pkgs.glibc installs many candidates, but it does not support darwin
     # https://wiki.archlinux.jp/index.php/%E3%83%AD%E3%82%B1%E3%83%BC%E3%83%AB
     # https://github.com/nix-community/home-manager/blob/fe56302339bb28e3471632379d733547caec8103/modules/home-environment.nix#L11
     language = {
       base = "ja_JP.UTF-8";
+      # systemd config overrides this value in gnome-shell, however this will be used in Linux VT console
       time = "en_DK.UTF-8"; # To prefer ISO 8601 format. See https://unix.stackexchange.com/questions/62316/why-is-there-no-euro-english-locale
     };
   };

diff --git a/home-manager/systemd.nix b/home-manager/systemd.nix
@@ -4,6 +4,14 @@
   # https://github.com/nix-community/home-manager/blob/release-24.05/modules/systemd.nix#L161-L173
   systemd = {
     user = {
+      # Enable locale for GNOME and terminals in the gnome-shell. Linux VT console respects home.sessionVariables instead
+      # https://superuser.com/a/1841368
+      # https://github.com/nix-community/home-manager/blob/5ec753a1fc4454df9285d8b3ec0809234defb975/modules/systemd.nix#L92-L96
+      sessionVariables = {
+        # GNOME clock respects LC_TIME. And does not support displaying iso-8601 format even if set en_DK
+        LC_TIME = "ja_JP.UTF-8";
+      };
+
       services.podman = {
         Unit = {
           Description = "Podman API Service";

diff --git a/nixos/desktop/default.nix b/nixos/desktop/default.nix
@@ -34,6 +34,11 @@
     };
   };
 
+  i18n = {
+    # GNOME respects this, I don't know how to realize it only via home-manager
+    defaultLocale = "ja_JP.UTF-8";
+  };
+
   services.xserver = {
     enable = true;