workbench: supervisor.conf tracer is optional

Author: fmaste

nix/workbench/backend/nomad.nix

@@ -77,7 +77,7 @@ let
             };
         supervisorConf =
           import ./supervisor-conf.nix
-            { inherit (profileNix) node-services;
+            { inherit profileNix;
               inherit pkgs lib stateDir;
               unixHttpServerPort = "/tmp/supervisor.sock";
             };

nix/workbench/backend/supervisor-conf.nix

@@ -1,7 +1,7 @@
 { pkgs
 , lib
 , stateDir
-, node-services
+, profileNix
 , unixHttpServerPort ? null
 , inetHttpServerPort ? null
 }:
@@ -41,7 +41,7 @@ let
     }
     //
     listToAttrs
-      (mapAttrsToList (_: nodeSvcSupervisorProgram) node-services)
+      (mapAttrsToList (_: nodeSvcSupervisorProgram) (profileNix.node-services))
     //
     {
       "program:generator" = {
@@ -58,7 +58,7 @@ let
       };
     }
     //
-    {
+    lib.attrsets.optionalAttrs (profileNix.value.node.tracer) {
       "program:tracer" = {
         directory      = "${stateDir}/tracer";
         command        = "sh start.sh";

nix/workbench/backend/supervisor.nix

@@ -32,7 +32,7 @@ let
   materialise-profile =
     { stateDir, profileNix }:
       let supervisorConf = import ./supervisor-conf.nix
-        { inherit (profileNix) node-services;
+        { inherit profileNix;
           inherit pkgs lib stateDir;
           inetHttpServerPort = "127.0.0.1:9001";
         };