Synit: add dependencies

nixproc/backends/synit/create-synit-daemon.nix

@@ -1,8 +1,10 @@
 { lib, writeTextFile, toPreserves }:
 
 { name, description, daemon, daemonArgs, environment, directory
-# Daemon will not be started until all elements of depends-on are asserted.
-# Example: [ "<service-state <milestone network> up>" ]
+# List of services that this configuration depends on.
+, dependencies ? [ ]
+  # Daemon will not be started until all elements of depends-on are asserted.
+  # Example: [ "<service-state <milestone network> up>" ]
 , depends-on ? [ ]
   # Whether the daemon shall be declared as required.
 , require-service ? true }:
@@ -16,20 +18,30 @@ let
     env = environment;
   } // (lib.attrsets.optionalAttrs (directory != null) { dir = directory; });
 
+  serviceName = "<daemon ${name}>";
+
 in writeTextFile {
   name = "services-${name}";
   destination = "/services/${name}.pr";
-  text = let daemonName = "<daemon ${name}>";
-  in ''
-    <metadata ${daemonName} { description: "${description}" }>
-    <daemon ${name} ${toPreserves processSpec}>
+  text = ''
+    <metadata ${serviceName} { description: "${description}" }>
   ''
 
-  + (lib.strings.optionalString require-service ''
-    <require-service ${daemonName}>
-  '')
+    + (lib.strings.optionalString require-service ''
+      <require-service ${serviceName}>
+    '')
 
-  + (lib.strings.concatMapStrings (dep: ''
-    <depends-on ${daemonName} ${dep}>
-  '') depends-on);
+    + (lib.strings.concatMapStrings (dep: ''
+      <depends-on ${serviceName} ${dep}>
+    '') depends-on)
+
+    + (lib.strings.concatMapStrings (pkg: ''
+      <depends-on ${serviceName} ${pkg.serviceName}>
+    '') dependencies)
+
+    + ''
+      <daemon ${name} ${toPreserves processSpec}>
+    '';
+} // {
+  inherit serviceName;
 }

nixproc/backends/synit/generate-synit-service.nix

@@ -6,7 +6,8 @@
 
 let
   generatedTargetSpecificArgs = {
-    inherit name description daemon daemonArgs environment directory;
+    inherit name description daemon daemonArgs environment directory
+      dependencies;
   };
 
   targetSpecificArgs = if builtins.isFunction overrides then