From 8aecb65a2d0700e53d1758e41ef6a2bcc792df66 Mon Sep 17 00:00:00 2001
From: Tom van Dijk <18gatenmaker6@gmail.com>
Date: Wed, 16 Jul 2025 14:55:18 +0200
Subject: [PATCH] tree-sitter.grammars: pin known bad with
 pythonPackages.tree-sitter 0.24

This commit prevents the update script from touching the files listed
under `pinnedGrammars`. This way breakages cannot accidentally be caused
again (re: #414233 breaking the heck out of staging-next et al)
---
 .../tools/parsing/tree-sitter/update.nix         | 16 ++++++++++++++++
 .../tools/parsing/tree-sitter/update_impl.py     |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/pkgs/development/tools/parsing/tree-sitter/update.nix b/pkgs/development/tools/parsing/tree-sitter/update.nix
index cf9502ed575e..2174fba4393f 100644
--- a/pkgs/development/tools/parsing/tree-sitter/update.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/update.nix
@@ -494,6 +494,21 @@ let
     };
   };
 
+  pinnedGrammars = [
+    "tree-sitter-bash"
+    "tree-sitter-bibtex"
+    "tree-sitter-c"
+    "tree-sitter-comment"
+    "tree-sitter-fortran"
+    "tree-sitter-hcl"
+    "tree-sitter-hyprlang"
+    "tree-sitter-llvm"
+    "tree-sitter-markdown"
+    "tree-sitter-query"
+    "tree-sitter-rust"
+  ];
+  pinnedGrammarsJson = jsonFile pinnedGrammars;
+
   allGrammars =
     let
       treeSitterOrgaGrammars = lib.listToAttrs (
@@ -523,6 +538,7 @@ let
         inherit
           knownTreeSitterOrgGrammarRepos
           ignoredTreeSitterOrgRepos
+          pinnedGrammars
           ;
       }
       (
diff --git a/pkgs/development/tools/parsing/tree-sitter/update_impl.py b/pkgs/development/tools/parsing/tree-sitter/update_impl.py
index a53e1ee62c36..3133aa3902af 100644
--- a/pkgs/development/tools/parsing/tree-sitter/update_impl.py
+++ b/pkgs/development/tools/parsing/tree-sitter/update_impl.py
@@ -96,6 +96,10 @@ def fetchRepo() -> None:
             "outputDir": outputDir,
             "nixRepoAttrName": nixRepoAttrName,
         }:
+            if repo in args["pinnedGrammars"]:
+                log(f"Grammar {repo} is pinned, skipping upgrade...")
+                return
+
             token: str | None = os.environ.get("GITHUB_TOKEN", None)
             out = run_cmd(
                 curl_github_args(