From b25391b3dfded6e82a2e67672b0f3c7ee6ea6d67 Mon Sep 17 00:00:00 2001
From: ekzyis <ramdip.singhgill@gmail.com>
Date: Thu, 19 Mar 2026 17:05:42 +0100
Subject: [PATCH 1/2] flake: fix missing dependencies for make

Running `nix develop`, `./configure` and then `make` fails with this error:

```
tests/fuzz/fuzz-hmac-sha256.c:8:10: fatal error: openssl/evp.h: No such file or directory
```

After adding `openssl`, without `protobuf`, `make` fails while building
`cln-grpc v0.5.0` because the `protoc` binary is missing.
---
 nix/pkgs/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nix/pkgs/default.nix b/nix/pkgs/default.nix
index fb1663c19cba..7b2167e74f79 100644
--- a/nix/pkgs/default.nix
+++ b/nix/pkgs/default.nix
@@ -35,6 +35,7 @@ stdenv.mkDerivation {
     libtool
     lowdown
     pkgconf
+    protobuf
     py3
     unzip
     which
@@ -52,6 +53,7 @@ stdenv.mkDerivation {
     gmp
     jq
     libsodium
+    openssl
     sqlite
     zlib
   ];

From cc462d3d3e9a37e1044257c78ae95bd0abf63da6 Mon Sep 17 00:00:00 2001
From: ekzyis <ramdip.singhgill@gmail.com>
Date: Thu, 19 Mar 2026 17:06:55 +0100
Subject: [PATCH 2/2] flake: fix libstdc++.so.6 not found

also include uv in nix develop shell to run tests
---
 nix/shells.nix | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/nix/shells.nix b/nix/shells.nix
index bb3588c28b3a..9ca4052fa79a 100644
--- a/nix/shells.nix
+++ b/nix/shells.nix
@@ -9,7 +9,18 @@
     }:
     {
       devShells = {
-        default = pkgs.mkShell { inputsFrom = [ config.packages.default ]; };
+        default = pkgs.mkShell {
+          inputsFrom = [ config.packages.default ];
+          buildInputs = [
+            pkgs.stdenv.cc.cc.lib
+            pkgs.uv
+          ];
+          # this fixes the following error when running uv pytest tests/:
+          #   ImportError: libstdc++.so.6: cannot open shared object file: No such file or directory
+          shellHook = ''
+            export LD_LIBRARY_PATH="${pkgs.stdenv.cc.cc.lib}/lib''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH"
+          '';
+        };
         postgres = pkgs.mkShell { inputsFrom = [ config.packages.cln-postgres ]; };
         rust = pkgs.craneLib.devShell {
           checks = {