helix: Added souffle support

roles/home/helix.nix

@@ -35,6 +35,76 @@
       [[language]]
       name = "python"
       formatter = { command = "black", args = [ "-" ] }
+
+      [[language]]
+      name = "souffle"
+      scope = "source.souffle"
+      roots = []
+      file-types = [ "dl" ]
+      comment-token = "//"
+      indent = { tab-width = 2, unit = "  " }
+
+      [[grammar]]
+      name = "souffle"
+      source = { git = "https://github.com/langston-barrett/tree-sitter-souffle", rev = "8cc32019f6aa8d7ef98ff5abc643c8f35dfc1099" }
+    '';
+
+    file.".config/helix/runtime/queries/souffle/highlights.scm".text = ''
+      [
+        (pragma) @keyword
+        (functor_decl) @keyword
+        (component_decl) @keyword
+        (component_init) @keyword
+        (directive) @keyword
+        (monotonic_rule) @keyword
+        (subsumptive_rule) @keyword
+        (fact) @keyword
+        (relation_decl) @keyword
+        (type_decl) @keyword
+        (legacy_type_decl) @keyword
+      ] @keyword
+
+      [
+        (primitive_type) @type
+        (type_synonym) @type
+        (subtype) @type
+        (type_union) @type
+        (type_record) @type
+        (adt) @type
+        (legacy_bare_type_decl) @type
+      ] @type
+
+      [
+        (block_comment) @comment
+        (line_comment) @comment
+      ] @comment
+
+      [
+        (string) @string
+      ] @string
+
+      [
+        (number) @constant.numeric
+        (integer) @constant.numeric
+        (decimal) @constant.numeric
+        (unsigned) @constant.numeric
+        (hex) @constant.numeric
+        (binary) @constant.numeric
+        (float) @constant.numeric
+        (ipv4) @constant.numeric
+      ] @constant.numeric
+
+      [
+        (ident) @variable
+      ] @variable
+
+      [
+        (qualified_name) @entity
+      ] @entity
+
+      [
+        (intrinsic_functor) @operator
+      ] @operator
     '';
 
     packages = with pkgs.unstablePkgs; [