install DocC-Render in install-all mode when DocC is being built

Author: QuietMisdreavus

utils/swift_build_support/swift_build_support/build_script_invocation.py

@@ -700,11 +700,17 @@ def compute_product_pipelines(self):
                             is_enabled=self.args.tsan_libdispatch_test)
         builder.add_product(products.SwiftDocC,
                             is_enabled=self.args.build_swiftdocc)
-        builder.add_product(products.SwiftDocCRender,
-                            is_enabled=self.args.install_swiftdocc)
         builder.add_product(products.MinimalStdlib,
                             is_enabled=self.args.build_minimalstdlib)
 
+        # Swift-DocC-Render should be installed whenever Swift-DocC is installed, which
+        # can be either given directly or via install-all
+        install_doccrender = self.args.install_swiftdocc or (
+            self.args.install_all and self.args.build_swiftdocc
+        )
+        builder.add_product(products.SwiftDocCRender,
+                            is_enabled=install_doccrender)
+
         # Keep SwiftDriver at last.
         # swift-driver's integration with the build scripts is not fully
         # supported. Using swift-driver to build these products may hit

utils/swift_build_support/swift_build_support/products/swiftdoccrender.py

@@ -48,7 +48,9 @@ def should_test(self, host_target):
 
     def should_install(self, host_target):
         # Swift-DocC-Render should always be installed if Swift-DocC is being installed
-        return self.args.install_swiftdocc
+        return self.args.install_swiftdocc or (
+            self.args.install_all and self.args.build_swiftdocc
+        )
 
     def install(self, host_target):
         # Swift-DocC-Render is installed at '/usr/share/docc/render' in the built