build-maven: Handle very long dependency lists

pkgs/build-support/build-maven.nix

@@ -13,7 +13,7 @@
 infoFile: let
   info = builtins.fromJSON (builtins.readFile infoFile);
 
-  repo = runCommand "maven-repository" {} ''
+  script = writeText "build-maven-repository.sh" ''
     ${lib.concatStrings (map (dep: let
       inherit (dep) url sha1 groupId artifactId version;
 
@@ -25,6 +25,10 @@ infoFile: let
     '') info.dependencies)}
   '';
 
+  repo = runCommand "maven-repository" {} ''
+    bash ${script}
+  '';
+
   settings = writeText "settings.xml" ''
     <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"