nixos/woodpecker-agents: use 'literalExample'

The next commit is going to add an option which takes a list of
packages. So the example must be converted to make it documentable.

This will also allow adding comments, to explain why some options are
used.

1 files changed, 20 insertions, 18 deletions

diff --git a/nixos/modules/services/continuous-integration/woodpecker/agents.nix b/nixos/modules/services/continuous-integration/woodpecker/agents.nix
index 62719ee934a..4beb74ca5b3 100644
--- a/nixos/modules/services/continuous-integration/woodpecker/agents.nix
+++ b/nixos/modules/services/continuous-integration/woodpecker/agents.nix
@@ -106,28 +106,30 @@ in
       agents = lib.mkOption {
         default = { };
         type = lib.types.attrsOf agentModule;
-        example = {
-          podman = {
-            environment = {
-              WOODPECKER_SERVER = "localhost:9000";
-              WOODPECKER_BACKEND = "docker";
-              DOCKER_HOST = "unix:///run/podman/podman.sock";
-            };
-
-            extraGroups = [ "podman" ];
+        example = lib.literalExpression ''
+          {
+            podman = {
+              environment = {
+                WOODPECKER_SERVER = "localhost:9000";
+                WOODPECKER_BACKEND = "docker";
+                DOCKER_HOST = "unix:///run/podman/podman.sock";
+              };
 
-            environmentFile = [ "/run/secrets/woodpecker/agent-secret.txt" ];
-          };
+              extraGroups = [ "podman" ];
 
-          exec = {
-            environment = {
-              WOODPECKER_SERVER = "localhost:9000";
-              WOODPECKER_BACKEND = "local";
+              environmentFile = [ "/run/secrets/woodpecker/agent-secret.txt" ];
             };
 
-            environmentFile = [ "/run/secrets/woodpecker/agent-secret.txt" ];
-          };
-        };
+            exec = {
+              environment = {
+                WOODPECKER_SERVER = "localhost:9000";
+                WOODPECKER_BACKEND = "local";
+              };
+
+              environmentFile = [ "/run/secrets/woodpecker/agent-secret.txt" ];
+            };
+          }
+        '';
         description = lib.mdDoc "woodpecker-agents configurations";
       };
     };