miniaudio: export miniaudio header

pkgs/by-name/mi/miniaudio/package.nix

@@ -2,32 +2,52 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  testers,
 }:
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "miniaudio";
   version = "0.11.22";
 
   src = fetchFromGitHub {
     owner = "mackron";
     repo = "miniaudio";
-    rev = version;
+    rev = finalAttrs.version;
     hash = "sha256-o/7sfBcrhyXEakccOAogQqm8dO4Szj1QSpaIHg6OSt4=";
   };
 
-  installPhase = ''
-    mkdir -p $out
-    cp -r $src/* $out/
+  postInstall = ''
+    mkdir -p $out/include
+    mkdir -p $out/lib/pkgconfig
+
+    cp $src/miniaudio.h $out/include
+    ln -s $out/include/miniaudio.h $out
+
+    cp -r $src/extras $out/
+
+    cat <<EOF >$out/lib/pkgconfig/miniaudio.pc
+    prefix=$out
+    includedir=$out/include
+
+    Name: miniaudio
+    Description: An audio playback and capture library in a single source file.
+    Version: $version
+    Cflags: -I$out/include
+    Libs: -lm -lpthread -latomic
+    EOF
   '';
 
+  passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
+
   meta = with lib; {
     description = "Single header audio playback and capture library written in C";
     homepage = "https://github.com/mackron/miniaudio";
-    changelog = "https://github.com/mackron/miniaudio/blob/${src.rev}/CHANGES.md";
+    changelog = "https://github.com/mackron/miniaudio/blob/${finalAttrs.version}/CHANGES.md";
     license = with licenses; [
       unlicense # or
       mit0
     ];
     maintainers = [ maintainers.jansol ];
+    pkgConfigModules = [ "miniaudio" ];
     platforms = platforms.all;
   };
-}
+})