pkgs/tools/audio/yabridgectl/chainloader-from-nix-profiles.patch

   1 diff --git a/tools/yabridgectl/src/config.rs b/tools/yabridgectl/src/config.rs
   2 index da5f4ff5..c220d62d 100644
   3 --- a/tools/yabridgectl/src/config.rs
   4 +++ b/tools/yabridgectl/src/config.rs
   5 @@ -22,6 +22,7 @@ use serde_derive::{Deserialize, Serialize};
   6  use std::collections::{BTreeMap, BTreeSet, HashSet};
   7  use std::env;
   8  use std::fs;
   9 +use std::iter;
  10  use std::path::{Path, PathBuf};
  11  use which::which;
  12  use xdg::BaseDirectories;
  13 @@ -225,34 +226,27 @@ impl Config {
  14                  }
  15              }
  16              None => {
  17 -                // Search in the system library locations and in `~/.local/share/yabridge` if no
  18 -                // path was set explicitely. We'll also search through `/usr/local/lib` just in case
  19 -                // but since we advocate against installing yabridge there we won't list this path
  20 -                // in the error message when `libyabridge-chainloader-vst2.so` can't be found.
  21 -                let system_path = Path::new("/usr/lib");
  22 +                // Search through NIX_PROFILES & data home directory if no path was set explicitly.
  23 +                // NIX_PROFILES is iterated in reverse from the most specific (the user profile) to
  24 +                // the least specific (the system profile).
  25 +                let nix_profiles = env::var("NIX_PROFILES");
  26                  let user_path = xdg_dirs.get_data_home();
  27 -                let lib_directories = [
  28 -                    system_path,
  29 -                    // Used on Debian based distros
  30 -                    Path::new("/usr/lib/x86_64-linux-gnu"),
  31 -                    // Used on Fedora
  32 -                    Path::new("/usr/lib64"),
  33 -                    Path::new("/usr/local/lib"),
  34 -                    Path::new("/usr/local/lib/x86_64-linux-gnu"),
  35 -                    Path::new("/usr/local/lib64"),
  36 -                    &user_path,
  37 -                ];
  38 +                let lib_directories = nix_profiles.iter()
  39 +                    .flat_map(|profiles| profiles.split(' ')
  40 +                              .rev()
  41 +                              .map(|profile| Path::new(profile).join("lib")))
  42 +                    .chain(iter::once(user_path.clone()));
  43 +
  44                  let mut candidates = lib_directories
  45 -                    .iter()
  46                      .map(|directory| directory.join(VST2_CHAINLOADER_NAME));
  47 +
  48                  match candidates.find(|directory| directory.exists()) {
  49                      Some(candidate) => candidate,
  50                      _ => {
  51                          return Err(anyhow!(
  52 -                            "Could not find '{}' in either '{}' or '{}'. You can override the \
  53 +                            "Could not find '{}' through 'NIX_PROFILES' or '{}'. You can override the \
  54                               default search path using 'yabridgectl set --path=<path>'.",
  55                              VST2_CHAINLOADER_NAME,
  56 -                            system_path.display(),
  57                              user_path.display()
  58                          ));
  59                      }
  60 diff --git a/tools/yabridgectl/src/main.rs b/tools/yabridgectl/src/main.rs
  61 index 0a29d431..479eaef0 100644
  62 --- a/tools/yabridgectl/src/main.rs
  63 +++ b/tools/yabridgectl/src/main.rs
  64 @@ -134,7 +134,7 @@ fn main() -> Result<()> {
  65                          .long_help(
  66                              "Path to the directory containing \
  67                               'libyabridge-chainloader-{clap,vst2,vst3}.so'. If this is not set, \
  68 -                             then yabridgectl will look in both '/usr/lib' and \
  69 +                             then yabridgectl will look through 'NIX_PROFILES' and \
  70                               '~/.local/share/yabridge' by default.",
  71                          )
  72                          .value_parser(parse_directory_path)