[gnome-builder] rust-analyzer: use ide_build_system_supports_language()

[Christian Hergert <chergert src gnome org>]

commit 5fd94628a31c41878149d44beab6c0d3863367de
Author: Christian Hergert <chergert redhat com>
Date:   Mon Aug 2 14:10:36 2021 -0700

    rust-analyzer: use ide_build_system_supports_language()

 src/plugins/rust-analyzer/rust-analyzer-pipeline-addin.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)
---
diff --git a/src/plugins/rust-analyzer/rust-analyzer-pipeline-addin.c 
b/src/plugins/rust-analyzer/rust-analyzer-pipeline-addin.c
index 4597f2ff7..016264645 100644
--- a/src/plugins/rust-analyzer/rust-analyzer-pipeline-addin.c
+++ b/src/plugins/rust-analyzer/rust-analyzer-pipeline-addin.c
@@ -26,7 +26,6 @@
 #include <libide-core.h>
 
 #include "rust-analyzer-pipeline-addin.h"
-#include <meson/gbp-meson-build-system.h>
 
 #if 0
 # define DEV_MODE
@@ -299,15 +298,8 @@ rust_analyzer_pipeline_addin_prepare (IdePipelineAddin *addin,
   context = ide_object_get_context (IDE_OBJECT (pipeline));
   buildsystem = ide_build_system_from_context (context);
 
-  if (ide_str_equal (ide_build_system_get_id (buildsystem), "meson"))
-    {
-      GbpMesonBuildSystem *meson = GBP_MESON_BUILD_SYSTEM (buildsystem);
-      const gchar * const *languages = gbp_meson_build_system_get_languages (meson);
-      if (!languages || !g_strv_contains (languages, "rust"))
-        IDE_EXIT;
-    }
-  else if (!ide_str_equal (ide_build_system_get_id (buildsystem), "cargo"))
-      IDE_EXIT;
+  if (!ide_build_system_supports_language (buildsystem, "rust"))
+    IDE_EXIT;
 
   self->pipeline = pipeline;