Merge d8fbc75bab into 7ff836131a

If the `gcloud` command is interactive (e.g. asks to install a component, or needs an update), the current code will hang forever, and is uninterruptible as `INT` is being swallowed.

Fix this with `</dev/null` and `--quiet`.

README.md

@@ -431,6 +431,7 @@ Powerlevel10k.
 - [Arch Linux](#arch-linux)
 - [Alpine Linux](#alpine-linux)
 - [Fig](#fig)
+- [NixOS](#nixos)
 
 ### Manual
 
@@ -549,6 +550,42 @@ ln -s /usr/share/zsh/plugins/powerlevel10k ~/.local/share/zsh/plugins/
 Follow the instructions on
 [this page](https://fig.io/plugins/other/powerlevel10k).
 
+### NixOS
+
+**Home Manager**
+
+```nix
+programs.zsh = {
+  ...
+  plugins = [
+      {
+        name = "zsh-powerlevel10k";
+        src = "${pkgs.zsh-powerlevel10k}/share/zsh-powerlevel10k/";
+        file = "powerlevel10k.zsh-theme";
+      }
+    ];
+
+    # NixOS 24.11 or earlier:
+    initExtra = ''
+      source ~/.p10k.zsh
+    '';
+
+    # NixOS 25.05 or later:
+    # initContent = let initExtra = lib.mkOrder 1000 '' [[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh ''; in lib.mkMerge [initExtra];
+};
+```
+
+**System wide**
+```nix
+programs.zsh = {
+  ...
+  promptInit = ''
+    source ${pkgs.zsh-powerlevel10k}/share/zsh-powerlevel10k/powerlevel10k.zsh-theme
+    source ~/.p10k.zsh
+  '';
+};
+```
+
 ## Configuration
 
 - [For new users](#for-new-users)

internal/p10k.zsh

@@ -4716,7 +4716,9 @@ _p9k_gcloud_prefetch() {
   if ! _p9k_cache_stat_get $0 ${CLOUDSDK_CONFIG:-~/.config/gcloud}/configurations/config_$P9K_GCLOUD_CONFIGURATION; then
     local pair account project_id
     pair="$(gcloud config configurations describe $P9K_GCLOUD_CONFIGURATION \
-      --format=$'value[separator="\1"](properties.core.account,properties.core.project)')"
+      --quiet \
+      --format=$'value[separator="\1"](properties.core.account,properties.core.project)' \
+      </dev/null)"
     (( ! $? )) && IFS=$'\1' read account project_id <<<$pair
     _p9k_cache_stat_set "$account" "$project_id"
   fi