From 82a67478fb2ecf07954da0e245338bebae7c24d1 Mon Sep 17 00:00:00 2001
From: Dich0tomy <75364377+Dich0tomy@users.noreply.github.com>
Date: Wed, 5 Aug 2026 01:54:48 +0200
Subject: [PATCH] fix(build): use a newer version of libgit2

The `libgit2-sys-1.9.6` crate in the repo requires that the version of
`libgit2` in the system is >= `1.9.6` - the latest version in unstable
is `1.9.4`.

There are several ways to go about it - two most reasonable ones being
bumping down `libgit2-sys` or simply using an overriden `pkgs.libgit`,
which is what we do.
---
 flake.nix | 33 ++++++++++++++++++++++++++++-----
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/flake.nix b/flake.nix
index e472ed7..838afc0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -42,11 +42,34 @@
               pkgs.pkg-config
             ];
 
-            buildInputs = [
-              pkgs.libgit2
-              pkgs.openssl
-              pkgs.zlib
-            ];
+            buildInputs =
+              let
+                libgit2-196 =
+                  let
+                    overrideObsolete = pkgs.lib.versionAtLeast pkgs.libgit2.version "1.9.6";
+                  in
+                  (
+                    if overrideObsolete then
+                      pkgs.lib.warn "The libgit2 override is no longer needed, `pkgs.libgit2.version`>=`${pkgs.libgit2.version}`." pkgs.libgit2
+                    else
+                      (pkgs.libgit2.overrideAttrs (
+                        f: p: {
+                          version = "1.9.6";
+                          src = pkgs.fetchFromGitHub {
+                            owner = "libgit2";
+                            repo = "libgit2";
+                            tag = "v${f.version}";
+                            hash = "sha256-ogowkZrw9MG4pcgXHzzNX5fm1Z8L2tNW8MDfL4ySJyY=";
+                          };
+                        }
+                      ))
+                  );
+              in
+              [
+                libgit2-196
+                pkgs.openssl
+                pkgs.zlib
+              ];
 
             env = {
               LIBGIT2_NO_VENDOR = true;