From 63b5a4e98936d7aa0c417d2a6fc8af7ac9839dbc Mon Sep 17 00:00:00 2001
From: Peder Bergebakken Sundt <pbsds@hotmail.com>
Date: Tue, 30 Apr 2024 23:04:10 +0200
Subject: [PATCH] Try pkg.meta.position before unsafeGetAttrPos

Fixes `nixpkgs.mpvScripts.*`, discovered while reviewing https://github.com/NixOS/nixpkgs/pull/308062
---
 nix_update/eval.py | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/nix_update/eval.py b/nix_update/eval.py
index 12d9210..b2b3fde 100644
--- a/nix_update/eval.py
+++ b/nix_update/eval.py
@@ -142,13 +142,22 @@ def eval_expression(
     return f"""
 let
   {indent(dedent(let_bindings), "  ")}
+  positionFromMeta = pkg: let
+    parts = builtins.match "(.*):([0-9]+)" pkg.meta.position;
+  in {{
+    file = builtins.elemAt parts 0;
+    line = builtins.fromJSON (builtins.elemAt parts 1);
+  }};
+
   raw_version_position = sanitizePosition (builtins.unsafeGetAttrPos "version" pkg);
 
-  position = if pkg ? isRubyGem then
+  position = if pkg ? meta.position then
+    sanitizePosition (positionFromMeta pkg)
+  else if pkg ? isRubyGem then
     raw_version_position
   else if pkg ? isPhpExtension then
     raw_version_position
-   else
+  else
     sanitizePosition (builtins.unsafeGetAttrPos "src" pkg);
 in {{
   name = pkg.name;