Merge master into staging-next

pkgs/applications/misc/syncthingtray/default.nix

···
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ doronbehar ];
     platforms = platforms.linux ++ platforms.darwin;
+    mainProgram = "syncthingtray";
   };
 })

pkgs/by-name/ll/llama-cpp/package.nix

···
 in
 effectiveStdenv.mkDerivation (finalAttrs: {
   pname = "llama-cpp";
-  version = "4621";
+  version = "4731";
 
   src = fetchFromGitHub {
     owner = "ggerganov";
     repo = "llama.cpp";
     tag = "b${finalAttrs.version}";
-    hash = "sha256-6/M1KbGEXYwalHP9PyW7kIJKdEBDViVIO3s6VHp4PbM=";
+    hash = "sha256-XB7TI1/Ui9BGdsD5TVH5MMZalgEGquW9wYcAhxgAcP0=";
     leaveDotGit = true;
     postFetch = ''
       git -C "$out" rev-parse --short HEAD > $out/COMMIT

pkgs/by-name/ma/mattermost/package.nix

···
     };
   };
 
-  meta = with lib; {
+  meta = {
     description = "Mattermost is an open source platform for secure collaboration across the entire software development lifecycle";
     homepage = "https://www.mattermost.org";
-    license = with licenses; [
+    license = with lib.licenses; [
       agpl3Only
       asl20
     ];
-    maintainers = with maintainers; [
+    maintainers = with lib.maintainers; [
       ryantm
       numinit
       kranzes
       mgdelacroix
       fsagbuya
     ];
+    platforms = lib.platforms.linux;
     mainProgram = "mattermost";
   };
 }