From 0d9f4b90cee1b5c5d6c142ef22de1e246e003ccc Mon Sep 17 00:00:00 2001
From: adisbladis <adisbladis@gmail.com>
Date: Thu, 30 Jan 2025 15:25:48 +1300
Subject: [PATCH] pep723: Fix empty metadata lines throwing "Invalid metadata
 line: #"

Closes https://github.com/pyproject-nix/uv2nix/issues/120
---
 lib/pep723.nix      |  2 +-
 lib/test_pep723.nix | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/lib/pep723.nix b/lib/pep723.nix
index 8ee66bf..870e7de 100644
--- a/lib/pep723.nix
+++ b/lib/pep723.nix
@@ -22,7 +22,7 @@ let
   stripComment =
     l:
     let
-      m = match " *# (.+)" l;
+      m = match " *# ?(.*)" l;
     in
     if match " *" l != null then
       l
diff --git a/lib/test_pep723.nix b/lib/test_pep723.nix
index 41f5814..7c8b66e 100644
--- a/lib/test_pep723.nix
+++ b/lib/test_pep723.nix
@@ -163,6 +163,34 @@ in
       };
     };
 
+    testEmptyLine = {
+      expr =
+        (pep723.parseScript ''
+          # /// script
+          # requires-python = ">=3.11"
+          # # Note: Empty line below
+          #
+          # ///
+        '').requires-python;
+      expected = [
+        {
+          op = ">=";
+          version = {
+            dev = null;
+            epoch = 0;
+            local = null;
+            post = null;
+            pre = null;
+            release = [
+              3
+              11
+            ];
+            str = "3.11";
+          };
+        }
+      ];
+    };
+
     # Note the empty line in the script.
     testHolyMetadata = {
       expr = pep723.parseScript ''