note envvar for system libgit2

diff --git a/debian/TODO b/debian/TODO
index 3f1ecfab0a6dd1e9f6014b66237b312f0be3a1d8..164f742efeca9c7769d8afab120a8ed98c919aa5 100644 (file)
--- a/debian/TODO
+++ b/debian/TODO
@@ -2,3 +2,5 @@ For 0.17.0 in unstable
 - update d/copyright
 - try to run the tests
 - remove embedded libgit2-sys
+  LIBGIT2_SYS_USE_PKG_CONFIG
+  https://github.com/alexcrichton/git2-rs/commit/ed629d783f629838611f07c5940a2608b7f97959