diff --git a/src/python/jw/pkg/cmds/projects/lib/pkg_relations.py b/src/python/jw/pkg/cmds/projects/lib/pkg_relations.py
index 8156ad7e..4a42b070 100644
--- a/src/python/jw/pkg/cmds/projects/lib/pkg_relations.py
+++ b/src/python/jw/pkg/cmds/projects/lib/pkg_relations.py
@@ -52,47 +52,52 @@ def pkg_relations(
 
     ret: list[str] = []
     for flavour in flavours:  # build / release / run / devel
-        cur_pkgs = seed_pkgs.copy()
-        visited_pkgs: set[str] = set()
-        while len(cur_pkgs):
-            cur_pkg = cur_pkgs.pop(0)
-            if cur_pkg in visited_pkgs or cur_pkg in ignore:
-                continue
+        closure: list[str] = []
+        visited: set[str] = set()
+        for seed in seed_pkgs:
+            app.walk_project_deps(
+                closure,
+                visited,
+                seed,
+                ['pkg.' + rel_type + '.jw'],
+                flavour,
+                add_self = True,
+                scope = Scope.Subtree,
+                names_only = True,
+                check_installed = False,
+                exclude = ignore,
+                recurse = recursive,
+            )
+        for cur_pkg in closure:
             for subsec in subsections:
                 section = 'pkg.' + rel_type + '.' + subsec
-                visited_pkgs.add(cur_pkg)
-                deps_spec = app.get_value(cur_pkg, section, flavour)
-                if not deps_spec:
-                    continue
-                for dep in Dependency.parse_deps_spec(
-                        deps_spec,
-                        lookup_version = app.get_version,
-                        dependent_package = cur_pkg,
-                ):
-                    dep_name = dep.base_name
-                    if dep_name in ignore or dep.full_name in ignore:
-                        continue
-                    if subsec == 'jw':
-                        if (recursive and dep_name not in visited_pkgs
-                                and dep_name not in cur_pkgs):
-                            cur_pkgs.append(dep_name)
-                        if hide_jw_pkg and dep_name == 'jw-pkg':
+                for deps_spec in app.read_dep_edges(cur_pkg, [section], flavour):
+                    for dep in Dependency.parse_deps_spec(
+                            deps_spec,
+                            lookup_version = app.get_version,
+                            dependent_package = cur_pkg,
+                    ):
+                        dep_name = dep.base_name
+                        if dep_name in ignore or dep.full_name in ignore:
                             continue
-                    expand_version_macros = subsec == 'jw'
-                    if dont_expand_version_macros and dep_name in cur_pkgs:
-                        expand_version_macros = False
-                    if hide_self and dep_name in seed_pkgs:
-                        continue
-                    dep_str = dep.constraint_str(
-                        untemplated = expand_version_macros,
-                        include_revision = dont_strip_revision,
-                        as_range = expand_semver_revision_range,
-                        no_subpackages = no_subpackages,
-                        syntax = syntax,
-                        quote = '"' if quote else None,
-                    )
-                    if dep_str in ret:
-                        continue
-                    log(DEBUG, f'Appending dependency >{dep_str}<')
-                    ret.append(dep_str)
+                        if subsec == 'jw':
+                            if hide_jw_pkg and dep_name == 'jw-pkg':
+                                continue
+                        expand_version_macros = subsec == 'jw'
+                        if dont_expand_version_macros and dep_name in visited:
+                            expand_version_macros = False
+                        if hide_self and dep_name in seed_pkgs:
+                            continue
+                        dep_str = dep.constraint_str(
+                            untemplated = expand_version_macros,
+                            include_revision = dont_strip_revision,
+                            as_range = expand_semver_revision_range,
+                            no_subpackages = no_subpackages,
+                            syntax = syntax,
+                            quote = '"' if quote else None,
+                        )
+                        if dep_str in ret:
+                            continue
+                        log(DEBUG, f'Appending dependency >{dep_str}<')
+                        ret.append(dep_str)
     return ret