diff --git a/pkgs/by-name/bt/bt-migrate/package.nix b/pkgs/by-name/bt/bt-migrate/package.nix
new file mode 100644
index 000000000000..289e15960c0f
--- /dev/null
+++ b/pkgs/by-name/bt/bt-migrate/package.nix
@@ -0,0 +1,65 @@
+{ lib
+, boost
+, cmake
+, cxxopts
+, digestpp
+, fetchFromGitHub
+, fmt
+, jsoncons
+, pugixml
+, sqlite
+, sqlite_orm
+, stdenv
+}:
+stdenv.mkDerivation {
+  pname = "bt-migrate";
+  version = "0-unstable-2023-08-17";
+
+  src = fetchFromGitHub {
+    owner = "mikedld";
+    repo = "bt-migrate";
+    rev = "e15a489c0c76f98355586ebbee08223af4e9bf50";
+    hash = "sha256-kA6yxhbIh3ThmgF8Zyoe3I79giLVmdNr9IIrw5Xx4s0=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  buildInputs = [
+    boost
+    cxxopts
+    fmt
+    jsoncons
+    pugixml
+    sqlite_orm
+  ];
+
+  cmakeFlags = [
+    (lib.strings.cmakeBool "USE_VCPKG" false)
+    # NOTE: digestpp does not have proper CMake packaging (yet?)
+    (lib.strings.cmakeBool "USE_FETCHCONTENT" true)
+    (lib.strings.cmakeFeature "FETCHCONTENT_SOURCE_DIR_DIGESTPP" "${digestpp}/include/digestpp")
+  ];
+
+  # NOTE: no install target in CMake...
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp BtMigrate $out/bin
+
+    runHook postInstall
+  '';
+
+  strictDeps = true;
+
+  meta = with lib; {
+    description = "Torrent state migration tool";
+    homepage = "https://github.com/mikedld/bt-migrate?tab=readme-ov-file";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ ambroisie ];
+    mainProgram = "BtMigrate";
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/by-name/di/digestpp/package.nix b/pkgs/by-name/di/digestpp/package.nix
new file mode 100644
index 000000000000..84d88d8b6623
--- /dev/null
+++ b/pkgs/by-name/di/digestpp/package.nix
@@ -0,0 +1,32 @@
+{ lib
+, fetchFromGitHub
+, stdenvNoCC
+}:
+stdenvNoCC.mkDerivation {
+  pname = "digestpp";
+  version = "0-unstable-2023-11-07";
+
+  src = fetchFromGitHub {
+    owner = "kerukuro";
+    repo = "digestpp";
+    rev = "ebb699402c244e22c3aff61d2239bcb2e87b8ef8";
+    hash = "sha256-9X/P7DgZB6bSYjQWRli4iAXEFjhmACOVv3EYQrXuH5c=";
+  };
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/include/digestpp
+    cp -r *.hpp algorithm/ detail/ $out/include/digestpp
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "C++11 header-only message digest library";
+    homepage = "https://github.com/kerukuro/digestpp";
+    license = licenses.unlicense;
+    maintainers = with maintainers; [ ambroisie ];
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/by-name/sq/sqlite_orm/package.nix b/pkgs/by-name/sq/sqlite_orm/package.nix
new file mode 100644
index 000000000000..82e11c6015b7
--- /dev/null
+++ b/pkgs/by-name/sq/sqlite_orm/package.nix
@@ -0,0 +1,35 @@
+{ lib
+, cmake
+, fetchFromGitHub
+, sqlite
+, stdenv
+}:
+stdenv.mkDerivation (finalAttrs: {
+  pname = "sqlite_orm";
+  version = "1.8.2";
+
+  src = fetchFromGitHub {
+    owner = "fnc12";
+    repo = "sqlite_orm";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-KqphGFcnR1Y11KqL7sxODSv7lEvcURdF6kLd3cg84kc=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  propagatedBuildInputs = [
+    sqlite
+  ];
+
+  strictDeps = true;
+
+  meta = with lib; {
+    description = "Light header only SQLite ORM";
+    homepage = "https://sqliteorm.com/";
+    license = licenses.agpl3Only; # MIT license is commercial
+    maintainers = with maintainers; [ ambroisie ];
+    platforms = platforms.all;
+  };
+})