Mark `runtime_deps` as `runtime` scope in generated pom files (#1113)

private/rules/has_maven_deps.bzl

diff --git a/private/rules/has_maven_deps.bzl b/private/rules/has_maven_deps.bzl
index df75b67..93ade76 100644
--- a/private/rules/has_maven_deps.bzl
+++ b/private/rules/has_maven_deps.bzl
@@ -5,6 +5,7 @@
         # Fields to do with maven coordinates
         "coordinates": "Maven coordinates for the project, which may be None",
         "maven_deps": "Depset of first-order maven dependencies",
+        "maven_runtime_deps": "Depset of first-order maven runtime dependencies",
         "as_maven_dep": "Depset of this project if used as a maven dependency",
 
         # Fields used for generating artifacts
@@ -93,6 +94,7 @@
 _gathered = provider(
     fields = [
         "all_infos",
+        "runtime_infos",
         "label_to_javainfo",
         "artifact_infos",
         "transitive_exports",
@@ -100,10 +102,14 @@
     ],
 )
 
-def _extract_from(gathered, maven_info, dep, include_transitive_exports):
+def _extract_from(gathered, maven_info, dep, include_transitive_exports, is_runtime_dep):
     java_info = dep[JavaInfo] if dep and JavaInfo in dep else None
 
     gathered.all_infos.append(maven_info)
+
+    if is_runtime_dep:
+        gathered.runtime_infos.append(maven_info)
+
     gathered.label_to_javainfo.update(maven_info.label_to_javainfo)
     if java_info:
         if maven_info.coordinates:
@@ -127,6 +133,7 @@
 
     gathered = _gathered(
         all_infos = [],
+        runtime_infos = [],
         artifact_infos = [target[JavaInfo]],
         transitive_exports = [],
         dep_infos = [],
@@ -137,13 +144,13 @@
         for dep in getattr(ctx.rule.attr, attr, []):
             if MavenHintInfo in dep:
                 for info in dep[MavenHintInfo].maven_infos.to_list():
-                    _extract_from(gathered, info, None, attr == "exports")
+                    _extract_from(gathered, info, None, attr == "exports", attr == "runtime_deps")
 
             if not MavenInfo in dep:
                 continue
 
             info = dep[MavenInfo]
-            _extract_from(gathered, info, dep, attr == "exports")
+            _extract_from(gathered, info, dep, attr == "exports", attr == "runtime_deps")
 
     all_infos = gathered.all_infos
     artifact_infos = gathered.artifact_infos
@@ -151,6 +158,7 @@
     dep_infos = gathered.dep_infos
     label_to_javainfo = gathered.label_to_javainfo
     maven_deps = depset(transitive = [i.as_maven_dep for i in all_infos])
+    maven_runtime_deps = depset(transitive = [i.as_maven_dep for i in gathered.runtime_infos])
 
     transitive_exports_from_exports = depset()
     if hasattr(ctx.rule.attr, "exports"):
@@ -163,6 +171,7 @@
     info = MavenInfo(
         coordinates = coordinates,
         maven_deps = maven_deps,
+        maven_runtime_deps = maven_runtime_deps,
         as_maven_dep = depset([coordinates]) if coordinates else maven_deps,
         artifact_infos = depset(direct = artifact_infos),
         dep_infos = depset(direct = dep_infos, transitive = [i.dep_infos for i in all_infos]),

private/rules/maven_utils.bzl

diff --git a/private/rules/maven_utils.bzl b/private/rules/maven_utils.bzl
index 0202101..77fd560 100644
--- a/private/rules/maven_utils.bzl
+++ b/private/rules/maven_utils.bzl
@@ -85,6 +85,7 @@
         parent = None,
         versioned_dep_coordinates = [],
         unversioned_dep_coordinates = [],
+        runtime_deps = [],
         indent = 8):
     unpacked_coordinates = unpack_coordinates(coordinates)
     substitutions = {
@@ -111,12 +112,18 @@
         substitutions.update({"{parent}": "".join(parts)})
 
     deps = []
-    for dep in sorted(versioned_dep_coordinates):
+    for dep in sorted(versioned_dep_coordinates) + sorted(unversioned_dep_coordinates):
+        include_version = dep in versioned_dep_coordinates
         unpacked = unpack_coordinates(dep)
-        deps.append(format_dep(unpacked, indent = indent))
-    for dep in sorted(unversioned_dep_coordinates):
-        unpacked = unpack_coordinates(dep)
-        deps.append(format_dep(unpacked, indent = indent, include_version = False))
+        new_scope = "runtime" if dep in runtime_deps else unpacked.scope
+        unpacked = struct(
+            groupId = unpacked.groupId,
+            artifactId = unpacked.artifactId,
+            type = unpacked.type,
+            scope = new_scope,
+            version = unpacked.version,
+        )
+        deps.append(format_dep(unpacked, indent = indent, include_version = include_version))
 
     substitutions.update({"{dependencies}": "\n".join(deps)})
 

private/rules/pom_file.bzl

diff --git a/private/rules/pom_file.bzl b/private/rules/pom_file.bzl
index 2a3825d..9a1177d 100644
--- a/private/rules/pom_file.bzl
+++ b/private/rules/pom_file.bzl
@@ -13,13 +13,20 @@
     additional_deps = determine_additional_dependencies(artifact_jars, ctx.attr.additional_dependencies)
 
     all_maven_deps = info.maven_deps.to_list()
+    runtime_maven_deps = info.maven_runtime_deps.to_list()
+
     for dep in additional_deps:
         for coords in dep[MavenInfo].as_maven_dep.to_list():
             all_maven_deps.append(coords)
+
     expanded_maven_deps = [
         ctx.expand_make_variables("additional_deps", coords, ctx.var)
         for coords in all_maven_deps
     ]
+    expanded_runtime_deps = [
+        ctx.expand_make_variables("maven_runtime_deps", coords, ctx.var)
+        for coords in runtime_maven_deps
+    ]
 
     # Expand maven coordinates for any variables to be replaced.
     coordinates = ctx.expand_make_variables("coordinates", info.coordinates, ctx.var)
@@ -28,6 +35,7 @@
         ctx,
         coordinates = coordinates,
         versioned_dep_coordinates = sorted(expanded_maven_deps),
+        runtime_deps = expanded_runtime_deps,
         pom_template = ctx.file.pom_template,
         out_name = "%s.xml" % ctx.label.name,
     )