diff --git a/default.nix b/default.nix
index 9d92204..a72b329 100644
--- a/default.nix
+++ b/default.nix
@@ -340,6 +340,8 @@ pkgs.lib.makeScope pkgs.newScope (self: let inherit (self) callPackage; in rec {
 
       camel-snake-pep8 = callPackage ./pkgs/python3/pkgs/camel-snake-pep8/camel-snake-pep8.nix { };
 
+      tree-sitter-languages = callPackage ./pkgs/python3/pkgs/tree-sitter-languages/tree-sitter-languages.nix { };
+
     #}))); # python3.pkgs
 
   #}))); # python3
diff --git a/pkgs/python3/pkgs/tree-sitter-languages/tree-sitter-languages.nix b/pkgs/python3/pkgs/tree-sitter-languages/tree-sitter-languages.nix
new file mode 100644
index 0000000..077f111
--- /dev/null
+++ b/pkgs/python3/pkgs/tree-sitter-languages/tree-sitter-languages.nix
@@ -0,0 +1,134 @@
+# FIXME use parser binaries from tree-sitter-grammars
+# compiling all grammars into one binary is a waste of build time
+
+{ lib
+, python3
+, fetchFromGitHub
+, tree-sitter-grammars
+}:
+
+/*
+# debug: build faster
+let old-tree-sitter-grammars = tree-sitter-grammars; in
+let
+  tree-sitter-grammars = {
+    tree-sitter-html = old-tree-sitter-grammars.tree-sitter-html;
+  };
+in
+*/
+
+# update grammars to fix build errors: multiple definition of ...
+# helper functions must be declared as "static"
+# see also
+# https://github.com/tree-sitter/tree-sitter-html/pull/64
+# https://github.com/grantjenks/py-tree-sitter-languages/issues/55
+let old-tree-sitter-grammars = tree-sitter-grammars; in
+let
+  tree-sitter-grammars = old-tree-sitter-grammars // {
+    # https://github.com/Himujjal/tree-sitter-svelte/issues/56
+    tree-sitter-svelte = null;
+    # https://github.com/ikatyang/tree-sitter-vue/issues/27
+    tree-sitter-vue = null;
+    tree-sitter-rst = old-tree-sitter-grammars.tree-sitter-rst.overrideAttrs (oldAttrs: {
+      src = fetchFromGitHub {
+        owner = "stsewd";
+        repo = "tree-sitter-rst";
+        rev = "3ba9eb9b5a47aadb1f2356a3cab0dd3d2bd00b4b";
+        hash = "sha256-0w11mtDcIc2ol9Alg4ukV33OzXADOeJDx+3uxV1hGfs=";
+      };
+    });
+  };
+in
+
+python3.pkgs.buildPythonPackage rec {
+  pname = "tree-sitter-languages";
+  version = "1.10.2";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "grantjenks";
+    repo = "py-tree-sitter-languages";
+    rev = "v${version}";
+    hash = "sha256-AuPK15xtLiQx6N2OATVJFecsL8k3pOagrWu1GascbwM=";
+  };
+
+  buildInputs = [
+    python3.pkgs.cython
+  ];
+
+  nativeBuildInputs = [
+    python3.pkgs.setuptools
+    python3.pkgs.wheel
+  ];
+
+  propagatedBuildInputs = [
+    python3.pkgs.tree-sitter
+  ];
+
+  postUnpack = ''
+    cd $sourceRoot
+    mkdir vendor
+    ${
+      builtins.concatStringsSep "" (
+        builtins.attrValues (
+          builtins.mapAttrs
+          (n: p:
+            "ln -v -s ${p.src.outPath} vendor/${n}\n"
+          )
+          (lib.filterAttrs (k: v: v ? src) tree-sitter-grammars)
+        )
+      )
+    }
+    cd ..
+  '';
+
+  postBuild = ''
+    echo creating $out/${python3.sitePackages}/tree_sitter_languages/languages.so
+
+    repo_paths=(
+    ${
+      builtins.concatStringsSep "" (
+        builtins.attrValues (
+          builtins.mapAttrs
+          (n: p:
+            "  'vendor/${n}'\n"
+          )
+          (lib.filterAttrs (k: v: v ? src) tree-sitter-grammars)
+        )
+      )
+    }
+    )
+    # get actual repo paths
+    # fix: No such file or directory: 'vendor/tree-sitter-markdown/src/parser.c
+    for idx in ''${!repo_paths[@]}; do
+      dir=''${repo_paths[$idx]}
+      [ -e $dir/src/parser.c ] && continue
+      parser=$(find $dir -path '*/src/parser.c')
+      dir=''${parser%/src/parser.c}
+      repo_paths[$idx]=$dir
+    done
+
+    #mkdir -p $out/${python3.sitePackages}/tree_sitter_languages
+    build_py=$(
+      echo "import tree_sitter"
+      echo "repo_paths = ["
+      for dir in ''${repo_paths[@]}; do
+        echo "  '$dir',"
+      done
+      echo "]"
+      echo "output_path = '$out/${python3.sitePackages}/tree_sitter_languages/languages.so'"
+      echo "tree_sitter.Language.build_library(output_path, repo_paths)"
+    )
+    echo "$build_py" | grep -n "" # debug
+    python3 -c "$build_py"
+  '';
+
+  pythonImportsCheck = [ "tree_sitter_languages" ];
+
+  meta = with lib; {
+    description = "Python module with all tree-sitter languages";
+    homepage = "https://github.com/grantjenks/py-tree-sitter-languages";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ ];
+  };
+}