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nixpkgs/pkgs/tools/audio/yabridge/libyabridge-from-nix-profiles.patch
2023-03-10 15:18:06 -05:00

72 lines
3.1 KiB
Diff

diff --git a/src/chainloader/utils.cpp b/src/chainloader/utils.cpp
index c43e5693..b8352adf 100644
--- a/src/chainloader/utils.cpp
+++ b/src/chainloader/utils.cpp
@@ -29,8 +29,10 @@
namespace fs = ghc::filesystem;
void* find_plugin_library(const std::string& name) {
+ Logger logger = Logger::create_exception_logger();
+
// Just using a goto for this would probably be cleaner, but yeah...
- const auto impl = [&name]() -> void* {
+ const auto impl = [&name, &logger]() -> void* {
// If `name` exists right next to the Wine plugin host binary, then
// we'll try loading that. Otherwise we'll fall back to regular
// `dlopen()` for distro packaged versions of yabridge
@@ -52,27 +54,28 @@ void* find_plugin_library(const std::string& name) {
}
}
- if (void* handle = dlopen(name.c_str(), RTLD_LAZY | RTLD_LOCAL)) {
- return handle;
+ auto nix_profiles = getenv("NIX_PROFILES");
+ if (!nix_profiles || nix_profiles[0] == '\0') {
+ logger.log("");
+ logger.log("ERROR: 'NIX_PROFILES' environment variable is not set");
+ logger.log("");
+ return nullptr;
}
- // One last Hail Mary, in case ldconfig was not set up correctly. This
- // might be relevant for some of the `/usr/local/*` locations (although
- // you really, really shouldn't install yabridge there, please, thank
- // you). Yabridgectl searches through these same directories.
- for (const auto& lib_dir : {
- "/usr/lib",
- "/usr/lib/x86_64-linux-gnu",
- "/usr/lib64",
- "/usr/local/lib",
- "/usr/local/lib/x86_64-linux-gnu",
- "/usr/local/lib64",
- }) {
- const fs::path candidate = fs::path(lib_dir) / name;
- if (void* handle =
- dlopen(candidate.c_str(), RTLD_LAZY | RTLD_LOCAL)) {
+ // NIX_PROFILES is iterated in reverse from the most specific (the
+ // user profile) to the least specific (the system profile).
+ const std::string_view nix_profiles_view = nix_profiles;
+ auto segment_end = nix_profiles_view.size();
+ while (segment_end != std::string::npos) {
+ const auto next_segment_end = nix_profiles_view.rfind(' ', segment_end - 1);
+ const auto segment_begin = next_segment_end + 1;
+ const auto profile = nix_profiles_view.substr(segment_begin, segment_end - segment_begin);
+ const auto candidate = fs::path(profile) / "lib" / name;
+ if (auto handle = dlopen(candidate.c_str(), RTLD_LAZY | RTLD_LOCAL)) {
return handle;
}
+
+ segment_end = next_segment_end;
}
return nullptr;
@@ -82,8 +85,6 @@ void* find_plugin_library(const std::string& name) {
if (!handle) {
const fs::path this_plugin_path = get_this_file_location();
- Logger logger = Logger::create_exception_logger();
-
logger.log("");
logger.log("Could not find '" + name + "'");
logger.log("");