uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/editors/emacs/elisp-packages/tree-sitter-langs/default-grammars.json

@@ -0,0 +1,31 @@
+[
+  "tree-sitter-agda",
+  "tree-sitter-bash",
+  "tree-sitter-c",
+  "tree-sitter-c-sharp",
+  "tree-sitter-cpp",
+  "tree-sitter-css",
+  "tree-sitter-elixir",
+  "tree-sitter-elm",
+  "tree-sitter-fluent",
+  "tree-sitter-go",
+  "tree-sitter-haskell",
+  "tree-sitter-hcl",
+  "tree-sitter-html",
+  "tree-sitter-java",
+  "tree-sitter-javascript",
+  "tree-sitter-jsdoc",
+  "tree-sitter-json",
+  "tree-sitter-julia",
+  "tree-sitter-nix",
+  "tree-sitter-ocaml",
+  "tree-sitter-php",
+  "tree-sitter-prisma",
+  "tree-sitter-python",
+  "tree-sitter-ruby",
+  "tree-sitter-rust",
+  "tree-sitter-scala",
+  "tree-sitter-typescript",
+  "tree-sitter-verilog",
+  "tree-sitter-zig"
+]

pkgs/applications/editors/emacs/elisp-packages/tree-sitter-langs/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, pkgs
+, symlinkJoin
+, fetchzip
+, melpaBuild
+, stdenv
+, fetchFromGitHub
+, writeText
+, melpaStablePackages
+, runCommand
+, tree-sitter-grammars
+, plugins ? map (g: tree-sitter-grammars.${g}) (lib.importJSON ./default-grammars.json)
+, final
+}:
+
+let
+  inherit (melpaStablePackages) tree-sitter-langs;
+
+  libSuffix = if stdenv.isDarwin then "dylib" else "so";
+  soName = g: lib.removeSuffix "-grammar" (lib.removePrefix "tree-sitter-" g.pname) + "." + libSuffix;
+
+  grammarDir = runCommand "emacs-tree-sitter-grammars" {
+    # Fake same version number as upstream language bundle to prevent triggering runtime downloads
+    inherit (tree-sitter-langs) version;
+  } (''
+    install -d $out/langs/bin
+    echo -n $version > $out/langs/bin/BUNDLE-VERSION
+  '' + lib.concatStringsSep "\n" (map (
+    g: "ln -s ${g}/parser $out/langs/bin/${soName g}") plugins
+  ));
+
+in
+melpaStablePackages.tree-sitter-langs.overrideAttrs(old: {
+  postPatch = old.postPatch or "" + ''
+    substituteInPlace ./tree-sitter-langs-build.el \
+    --replace "tree-sitter-langs-grammar-dir tree-sitter-langs--dir"  "tree-sitter-langs-grammar-dir \"${grammarDir}/langs\""
+  '';
+
+  passthru = old.passthru or {} // {
+    inherit plugins;
+    withPlugins = fn: final.tree-sitter-langs.override { plugins = fn tree-sitter-grammars; };
+  };
+
+})

pkgs/applications/editors/emacs/elisp-packages/tree-sitter-langs/update-defaults.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env nix-shell
+#! nix-shell ../../../../../../. -i python3 -p python3 -p nix
+from os.path import (
+    dirname,
+    abspath,
+    join,
+)
+from typing import (
+    List,
+    Any,
+)
+import subprocess
+import json
+import sys
+import os
+
+
+def fmt_grammar(grammar: str) -> str:
+    return "tree-sitter-" + grammar
+
+
+def eval_expr(nixpkgs: str, expr: str) -> Any:
+    p = subprocess.run(
+        [
+            "nix-instantiate",
+            "--json",
+            "--eval",
+            "--expr",
+            ("with import %s {}; %s" % (nixpkgs, expr)),
+        ],
+        check=True,
+        stdout=subprocess.PIPE,
+    )
+    return json.loads(p.stdout)
+
+
+def check_grammar_exists(nixpkgs: str, grammar: str) -> bool:
+    return eval_expr(
+        nixpkgs, f'lib.hasAttr "{fmt_grammar(grammar)}" tree-sitter-grammars'
+    )
+
+
+def build_attr(nixpkgs, attr: str) -> str:
+    return (
+        subprocess.run(
+            ["nix-build", "--no-out-link", nixpkgs, "-A", attr],
+            check=True,
+            stdout=subprocess.PIPE,
+        )
+        .stdout.decode()
+        .strip()
+    )
+
+
+if __name__ == "__main__":
+    cwd = dirname(abspath(__file__))
+    nixpkgs = abspath(join(cwd, "../../../../../.."))
+
+    src_dir = build_attr(nixpkgs, "emacs.pkgs.tree-sitter-langs.src")
+
+    existing: List[str] = []
+
+    grammars = os.listdir(join(src_dir, "repos"))
+    for g in grammars:
+        exists = check_grammar_exists(nixpkgs, g)
+        if exists:
+            existing.append(fmt_grammar(g))
+        else:
+            sys.stderr.write("Missing grammar: " + fmt_grammar(g) + "\n")
+            sys.stderr.flush()
+
+    with open(join(cwd, "default-grammars.json"), mode="w") as f:
+        json.dump(sorted(existing), f, indent=2)
+        f.write("\n")