librist: fix darwin build (#365036)

pkgs/by-name/li/librist/no-brew-darwin.diff

@@ -0,0 +1,14 @@
+diff --git a/meson.build b/meson.build
+index 05d00b3..b923958 100755
+--- a/meson.build
++++ b/meson.build
+@@ -39,7 +39,8 @@ deps = []
+ platform_files = []
+ inc = []
+ inc += include_directories('.', 'src', 'include/librist', 'include', 'contrib')
+-if (host_machine.system() == 'darwin')
++if (host_machine.system() == 'darwin'
++    and find_program('brew', required : false).found())
+ 	r = run_command('brew', '--prefix', check: true)
+ 	brewoutput = r.stdout().strip()
+ 	inc += include_directories(brewoutput + '/include')

pkgs/by-name/li/librist/package.nix

@@ -22,6 +22,12 @@ stdenv.mkDerivation rec {
     hash = "sha256-xWqyQl3peB/ENReMcDHzIdKXXCYOJYbhhG8tcSh36dY=";
   };
 
+  # avoid rebuild on Linux for now
+  patches = lib.optionals stdenv.isDarwin [
+    # https://code.videolan.org/rist/librist/-/issues/192
+    ./no-brew-darwin.diff
+  ];
+
   nativeBuildInputs = [
     meson
     ninja