[gnome-builder] eslint: handle a couple subtleties in the host launcher

[Christian Hergert <chergert src gnome org>]

commit e66aba592bf66cead52a7363d807e96ce19db31a
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jan 1 18:10:51 2022 -0800

    eslint: handle a couple subtleties in the host launcher
    
    Related !490

 src/plugins/eslint/eslint_plugin.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/src/plugins/eslint/eslint_plugin.py b/src/plugins/eslint/eslint_plugin.py
index 5f35e0611..6f3a55b71 100644
--- a/src/plugins/eslint/eslint_plugin.py
+++ b/src/plugins/eslint/eslint_plugin.py
@@ -77,7 +77,12 @@ class ESLintDiagnosticProvider(Ide.Object, Ide.DiagnosticProvider):
             # environment since that is likely where things were installed
             # and likely need access to host libraries/etc at known
             # locations/paths.
-            launcher = Ide.SubprocessLauncher.new(flags)
+            if host is not None:
+                launcher = host.create_launcher()
+                launcher.set_flags(flags)
+            else:
+                launcher = Ide.SubprocessLauncher.new(flags)
+                launcher.set_run_on_host(True)
             launcher.set_cwd(srcdir)
             launcher.push_argv(local_eslint)
             return launcher