sdrpp: patch to fix nix specific crash on startup (#483506)

From 89189428a6857bc5607d8e28b9090c0d8bd0f8e3 Mon Sep 17 00:00:00 2001

From 746644667cff9490d0f9a5f4ab70c76137dc80a2 Mon Sep 17 00:00:00 2001

From: Francesco Zanini <francesco@zanini.me>

Date: Mon, 6 Oct 2025 16:19:55 +0200

Subject: [PATCH] Allow management of resources and modules paths

The prefix path used is either the installation directory, or the

content of the `SDRPP_PREFIX` environment variable, if present.

NOTE: Paths are transformed using a *temporary copy* of the config. This fixes

the issue described here https://github.com/NixOS/nixpkgs/issues/467610.

---

 core/src/config.cpp | 31 ++++++++++++++++++++++++++++++-

 core/src/config.cpp | 34 ++++++++++++++++++++++++++++++++--

 core/src/config.h   |  4 +++-

 core/src/core.cpp   | 15 ++-------------

 3 files changed, 35 insertions(+), 15 deletions(-)

 3 files changed, 37 insertions(+), 16 deletions(-)

diff --git a/core/src/config.cpp b/core/src/config.cpp

index 6de1888fd803d4bbe04c7a4ed2187103dd8a5081..4cab471b24b985ca717afae4322618759ffd47b4 100644

index 6de1888f..dfde5628 100644

--- a/core/src/config.cpp

+++ b/core/src/config.cpp

@@ -41,12 +41,16 @@ void ConfigManager::load(json def, bool lock) {

@@ -41,13 +41,18 @@ void ConfigManager::load(json def, bool lock) {

         conf = def;

         save(false);

     }

 void ConfigManager::save(bool lock) {

     if (lock) { mtx.lock(); }

     std::ofstream file(path.c_str());

+    transformPaths(conf, false);

     file << conf.dump(4);

-    file << conf.dump(4);

+    auto tmp_conf = conf;

+    transformPaths(tmp_conf, false);

+    file << tmp_conf.dump(4);

     file.close();

     if (lock) { mtx.unlock(); }

@@ -98,4 +102,29 @@ void ConfigManager::autoSaveWorker() {

 }

@@ -98,4 +103,29 @@ void ConfigManager::autoSaveWorker() {

             termCond.wait_for(lock, std::chrono::milliseconds(1000), [this]() { return termFlag; });

         }

     }

+    }

+}

diff --git a/core/src/config.h b/core/src/config.h

index fbbdeb4a54e06524a399e35afe8e187732bf851e..f9deef01e8d0850ab65a68ac33c9ed124486a1d5 100644

index fbbdeb4a..f9deef01 100644

--- a/core/src/config.h

+++ b/core/src/config.h

@@ -33,4 +33,6 @@ class ConfigManager {

@@ -33,4 +33,6 @@ private:

     std::mutex termMtx;

     std::condition_variable termCond;

     volatile bool termFlag = false;

+    static void transformPaths(json& conf, bool expand);

+};

diff --git a/core/src/core.cpp b/core/src/core.cpp

index 37358062ed957e562bf971fa121d885073f2827c..f1b5396cad3154546bb3a2322403b7f3618ad253 100644

index 37358062..f1b5396c 100644

--- a/core/src/core.cpp

+++ b/core/src/core.cpp

@@ -267,19 +267,8 @@ int sdrpp_main(int argc, char* argv[]) {

     // Load config

     flog::info("Loading config");

-- 

2.52.0