From b5b59e3729743005dee1d77459e08217e70ff424 Mon Sep 17 00:00:00 2001
From: Guanran Wang <guanran928@outlook.com>
Date: Tue, 26 Dec 2023 14:42:06 +0800
Subject: [PATCH] nixos/clash: use systemd LoadCredential

---
 nixos/modules/services/clash.nix              |  8 ++---
 .../opt-in/clash-meta-client/default.nix      | 32 ++++++++-----------
 2 files changed, 18 insertions(+), 22 deletions(-)

diff --git a/nixos/modules/services/clash.nix b/nixos/modules/services/clash.nix
index 51bbf77..5a926d7 100644
--- a/nixos/modules/services/clash.nix
+++ b/nixos/modules/services/clash.nix
@@ -43,17 +43,17 @@ in {
       serviceConfig = {
         # TODO: DynamicUser
         # DynamicUser = true;
-        # LoadCredential = "credentials:${config.sops.secrets."clash-config".path}";
+        User = config.users.users."clash".name;
+        Group = config.users.groups."clash".name;
 
         # https://man.archlinux.org/man/systemd.exec.5
         ConfigurationDirectory = "clash";
-        User = config.users.users."clash".name;
-        Group = config.users.groups."clash".name;
+        LoadCredential = "configuration:${cfg.configFile}";
         ExecStart = builtins.replaceStrings ["\n"] [" "] ''
           ${lib.getExe cfg.package}
           -d /etc/clash
           ${lib.optionalString (cfg.webui != null) "-ext-ui ${cfg.webui}"}
-          ${lib.optionalString (cfg.configFile != null) "-f ${cfg.configFile}"}
+          ${lib.optionalString (cfg.configFile != null) "-f \${CREDENTIALS_DIRECTORY}/configuration"}
           ${lib.optionalString (cfg.extraOpts != null) cfg.extraOpts}
         '';
 
diff --git a/users/guanranwang/nixos/profiles/opt-in/clash-meta-client/default.nix b/users/guanranwang/nixos/profiles/opt-in/clash-meta-client/default.nix
index f4d29b9..1740f7f 100644
--- a/users/guanranwang/nixos/profiles/opt-in/clash-meta-client/default.nix
+++ b/users/guanranwang/nixos/profiles/opt-in/clash-meta-client/default.nix
@@ -21,24 +21,20 @@
   # TODO: Using example config
   # https://wiki.metacubex.one/example/conf/
   # MetaCubeX/Meta-Docs doesnt look reliable through commit messages, no fetchers was used
-  sops.templates."clash.yaml" = {
-    owner = config.systemd.services."clash".serviceConfig.User;
-    group = config.systemd.services."clash".serviceConfig.Group;
-    content =
-      builtins.readFile ./config.yaml
-      + ''
-        proxy-providers:
-          efcloud:
-            <<: *p
-            url: "${config.sops.placeholder."clash/proxy-providers/efcloud"}"
-          spcloud:
-            <<: *p
-            url: "${config.sops.placeholder."clash/proxy-providers/spcloud"}"
-          #pawdroid:
-          #  <<: *p
-          #  url: "${config.sops.placeholder."clash/proxy-providers/pawdroid"}"
-      '';
-  };
+  sops.templates."clash.yaml".content =
+    builtins.readFile ./config.yaml
+    + ''
+      proxy-providers:
+        efcloud:
+          <<: *p
+          url: "${config.sops.placeholder."clash/proxy-providers/efcloud"}"
+        spcloud:
+          <<: *p
+          url: "${config.sops.placeholder."clash/proxy-providers/spcloud"}"
+        #pawdroid:
+        #  <<: *p
+        #  url: "${config.sops.placeholder."clash/proxy-providers/pawdroid"}"
+    '';
 
   ### System proxy settings
   networking.proxy.default = "http://127.0.0.1:7890/";