neovim: bundle treesitter parsers

pkgs/applications/editors/neovim/default.nix

@@ -4,6 +4,8 @@
 , unibilium, gperf
 , libvterm-neovim
 , tree-sitter
+, fetchurl
+, treesitter-parsers ? import ./treesitter-parsers.nix { inherit fetchurl; }
 , CoreServices
 , glibcLocales ? null, procps ? null
 
@@ -119,7 +121,18 @@ in
       )
     '' + lib.optionalString stdenv.isDarwin ''
       substituteInPlace src/nvim/CMakeLists.txt --replace "    util" ""
-    '';
+    '' + ''
+      mkdir -p $out/lib/nvim/parser
+    '' + lib.concatStrings (lib.mapAttrsToList
+      (language: src: ''
+        ln -s \
+          ${tree-sitter.buildGrammar {
+            inherit language src;
+            version = "neovim-${version}";
+          }}/parser \
+          $out/lib/nvim/parser/${language}.so
+      '')
+      treesitter-parsers);
 
     shellHook=''
       export VIMRUNTIME=$PWD/runtime

pkgs/applications/editors/neovim/treesitter-parsers.nix

@@ -0,0 +1,24 @@
+{ fetchurl }:
+
+{
+  c = fetchurl {
+    url = "https://github.com/tree-sitter/tree-sitter-c/archive/v0.20.2.tar.gz";
+    hash = "sha256:af66fde03feb0df4faf03750102a0d265b007e5d957057b6b293c13116a70af2";
+  };
+  lua = fetchurl {
+    url = "https://github.com/MunifTanjim/tree-sitter-lua/archive/v0.0.14.tar.gz";
+    hash = "sha256:930d0370dc15b66389869355c8e14305b9ba7aafd36edbfdb468c8023395016d";
+  };
+  vim = fetchurl {
+    url = "https://github.com/neovim/tree-sitter-vim/archive/v0.3.0.tar.gz";
+    hash = "sha256:403acec3efb7cdb18ff3d68640fc823502a4ffcdfbb71cec3f98aa786c21cbe2";
+  };
+  vimdoc = fetchurl {
+    url = "https://github.com/neovim/tree-sitter-vimdoc/archive/v2.0.0.tar.gz";
+    hash = "sha256:1ff8f4afd3a9599dd4c3ce87c155660b078c1229704d1a254433e33794b8f274";
+  };
+  query = fetchurl {
+    url = "https://github.com/nvim-treesitter/tree-sitter-query/archive/v0.1.0.tar.gz";
+    hash = "sha256:e2b806f80e8bf1c4f4e5a96248393fe6622fc1fc6189d6896d269658f67f914c";
+  };
+}

pkgs/applications/editors/neovim/update-treesitter-parsers.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3 -p python3
+
+import re
+import subprocess
+from pathlib import Path
+
+parsers = {}
+dir = Path(__file__).parent
+regex = re.compile(r"^set\(TREESITTER_([A-Z_]+)_(URL|SHA256)\s+([^ \)]+)\s*\)\s*$")
+
+src = subprocess.check_output(
+    [
+        "nix-build",
+        dir.parent.parent.parent.parent,
+        "-A",
+        "neovim-unwrapped.src",
+        "--no-out-link",
+    ],
+    text=True,
+).strip()
+
+for line in open(f"{src}/cmake.deps/CMakeLists.txt"):
+    m = regex.fullmatch(line)
+    if m is None:
+        continue
+
+    lang = m[1].lower()
+    ty = m[2]
+    val = m[3]
+
+    if not lang in parsers:
+        parsers[lang] = {}
+    parsers[lang][ty] = val
+
+with open(dir / "treesitter-parsers.nix", "w") as f:
+    f.write("{ fetchurl }:\n\n{\n")
+    for lang, src in parsers.items():
+        f.write(
+            f"""  {lang} = fetchurl {{
+    url = "{src["URL"]}";
+    hash = "sha256:{src["SHA256"]}";
+  }};
+"""
+        )
+    f.write("}\n")