From 3318103f8a8cdcb4e2bc9a9915757ac8dbe9284e Mon Sep 17 00:00:00 2001
From: Ryan Yin <xiaoyin_c@qq.com>
Date: Sat, 19 Sep 2026 12:11:15 +0800
Subject: [PATCH] chore(guix): remove the unused Guix integration

Guix was enabled on every desktop host, but shoukei had no /gnu mount (store and state lived on the tmpfs root) and it was not used. Drop the module, the modules.guix option, the @guix subvolume and the /var/guix preservation entry.
---
 hosts/idols-ai/disko-fs.nix               |  7 -------
 hosts/idols-ai/hardware-configuration.nix |  2 +-
 modules/nixos/desktop/guix.nix            | 21 ---------------------
 3 files changed, 1 insertion(+), 29 deletions(-)
 delete mode 100644 modules/nixos/desktop/guix.nix

diff --git a/hosts/idols-ai/disko-fs.nix b/hosts/idols-ai/disko-fs.nix
index 0497631f..04e5bdf8 100644
--- a/hosts/idols-ai/disko-fs.nix
+++ b/hosts/idols-ai/disko-fs.nix
@@ -87,13 +87,6 @@
                       "noatime"
                     ];
                   };
-                  "@guix" = {
-                    mountpoint = "/gnu";
-                    mountOptions = [
-                      "compress-force=zstd:1"
-                      "noatime"
-                    ];
-                  };
                   "@persistent" = {
                     mountpoint = "/persistent";
                     mountOptions = [
diff --git a/hosts/idols-ai/hardware-configuration.nix b/hosts/idols-ai/hardware-configuration.nix
index d9ed6f0a..9b7cf978 100644
--- a/hosts/idols-ai/hardware-configuration.nix
+++ b/hosts/idols-ai/hardware-configuration.nix
@@ -74,7 +74,7 @@
     "exfat"
   ];
 
-  # LUKS initrd, all fileSystems (/, /boot, /btr_pool, /nix, /gnu, /persistent, /snapshots, /tmp, /swap)
+  # LUKS initrd, all fileSystems (/, /boot, /btr_pool, /nix, /persistent, /snapshots, /tmp, /swap)
   # and swap (including /swap/swapfile bind and swapDevices) are managed by disko (disko-fs.nix).
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
diff --git a/modules/nixos/desktop/guix.nix b/modules/nixos/desktop/guix.nix
deleted file mode 100644
index d8136ccd..00000000
--- a/modules/nixos/desktop/guix.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{
-  # https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/services/misc/guix/default.nix
-  services.guix = {
-    enable = true;
-    # The store directory where the Guix service will serve to/from.
-    # NOTE: most of the cached builds are assumed to be in `/gnu/store`.
-    storeDir = "/gnu/store";
-    # The state directory where Guix service will store its data such as its
-    # user-specific profiles, cache, and state files.
-    stateDir = "/var";
-    gc = {
-      enable = true;
-      # https://guix.gnu.org/en/manual/en/html_node/Invoking-guix-gc.html
-      extraArgs = [
-        "--delete-generations=1m"
-        "--free-space=10G"
-        "--optimize"
-      ];
-    };
-  };
-}