diff --git a/pkgs/development/python-modules/pysbd/default.nix b/pkgs/development/python-modules/pysbd/default.nix
new file mode 100644
index 000000000000..e1e0578c83b8
--- /dev/null
+++ b/pkgs/development/python-modules/pysbd/default.nix
@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, tqdm
+, spacy
+}:
+
+buildPythonPackage rec {
+  pname = "pysbd";
+  version = "0.3.3";
+  disabled = pythonOlder "3.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "56ab48a28a8470f0042a4cb7c9da8a6dde8621ecf87a86d75f201cbf1837e77f";
+  };
+
+  checkInputs = [ tqdm spacy ];
+
+  doCheck = false; # requires pyconll and blingfire
+
+  pythonImportsCheck = [ "pysbd" ];
+
+  meta = with lib; {
+    description = "Pysbd (Python Sentence Boundary Disambiguation) is a rule-based sentence boundary detection that works out-of-the-box across many languages";
+    homepage = "https://github.com/nipunsadvilkar/pySBD";
+    license = licenses.mit;
+    maintainers = [ maintainers.mic92 ];
+  };
+}
diff --git a/pkgs/tools/audio/tts/default.nix b/pkgs/tools/audio/tts/default.nix
new file mode 100644
index 000000000000..770e898f2eec
--- /dev/null
+++ b/pkgs/tools/audio/tts/default.nix
@@ -0,0 +1,123 @@
+{ lib
+, python3Packages
+, fetchFromGitHub
+, fetchpatch
+, python3
+}:
+
+#
+# Tested in the following setup:
+#
+# TTS model:
+#   Tacotron2 DDC
+#   https://drive.google.com/drive/folders/1Y_0PcB7W6apQChXtbt6v3fAiNwVf4ER5
+# Vocoder model:
+#   Multi-Band MelGAN
+#   https://drive.google.com/drive/folders/1XeRT0q4zm5gjERJqwmX5w84pMrD00cKD
+#
+# Arrange /tmp/tts like this:
+#   scale_stats.npy
+#   tts
+#   tts/checkpoint_130000.pth.tar
+#   tts/checkpoint_130000_tf.pkl
+#   tts/checkpoint_130000_tf_2.3rc0.tflite
+#   tts/config.json
+#   tts/scale_stats.npy
+#   vocoder
+#   vocoder/checkpoint_1450000.pth.tar
+#   vocoder/checkpoint_2750000_tf.pkl
+#   vocoder/checkpoint_2750000_tf_v2.3rc.tflite
+#   vocoder/config.json
+#   vocoder/scale_stats.npy
+#
+# Start like this:
+#   cd /tmp/tts
+#   tts-server \
+#     --vocoder_config ./tts/vocoder/config.json \
+#     --vocoder_checkpoint ./tts/vocoder/checkpoint_1450000.pth.tar \
+#     --tts_config ./tts/config.json \
+#     --tts_checkpoint ./tts/checkpoint_130000.pth.tar
+#
+# For now, for deployment check the systemd unit in the pull request:
+#   https://github.com/NixOS/nixpkgs/pull/103851#issue-521121136
+#
+
+python3Packages.buildPythonApplication rec {
+  pname = "tts";
+  # until https://github.com/mozilla/TTS/issues/424 is resolved
+  # we treat released models as released versions:
+  # https://github.com/mozilla/TTS/wiki/Released-Models
+  version = "unstable-2020-06-17";
+
+  src = fetchFromGitHub {
+    owner = "mozilla";
+    repo = "TTS";
+    rev = "72a6ac54c8cfaa407fc64b660248c6a788bdd381";
+    sha256 = "1wvs264if9n5xzwi7ryxvwj1j513szp6sfj6n587xk1fphi0921f";
+  };
+
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/mozilla/TTS/commit/36fee428b9f3f4ec1914b090a2ec9d785314d9aa.patch";
+      sha256 = "sha256-pP0NxiyrsvQ0A7GEleTdT87XO08o7WxPEpb6Bmj66dc=";
+    })
+  ];
+
+  preBuild = ''
+    # numba jit tries to write to its cache directory
+    export HOME=$TMPDIR
+    sed -i -e 's!tensorflow==.*!tensorflow!' requirements.txt
+    sed -i -e 's!librosa==[^"]*!librosa!' requirements.txt setup.py
+    sed -i -e 's!unidecode==[^"]*!unidecode!' requirements.txt setup.py
+    sed -i -e 's!bokeh==[^"]*!bokeh!' requirements.txt setup.py
+    sed -i -e 's!numba==[^"]*!numba!' requirements.txt setup.py
+    # Not required for building/installation but for their development/ci workflow
+    sed -i -e '/pylint/d' requirements.txt setup.py
+    sed -i -e '/cardboardlint/d' requirements.txt setup.py
+  '';
+
+
+  propagatedBuildInputs = with python3Packages; [
+    matplotlib
+    scipy
+    pytorch
+    flask
+    attrdict
+    bokeh
+    soundfile
+    tqdm
+    librosa
+    unidecode
+    phonemizer
+    tensorboardx
+    fuzzywuzzy
+    tensorflow_2
+    inflect
+    gdown
+    pysbd
+  ];
+
+  postInstall = ''
+    cp -r TTS/server/templates/ $out/${python3.sitePackages}/TTS/server
+  '';
+
+  checkInputs = with python3Packages; [ pytestCheckHook ];
+
+  disabledTests = [
+    # RuntimeError: fft: ATen not compiled with MKL support
+    "test_torch_stft"
+    "test_stft_loss"
+    "test_multiscale_stft_loss"
+    # AssertionErrors that I feel incapable of debugging
+    "test_phoneme_to_sequence"
+    "test_text2phone"
+    "test_parametrized_gan_dataset"
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/mozilla/TTS";
+    description = "Deep learning for Text to Speech";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ hexa mic92 ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 55e8b830944b..d066e8a2fb94 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -25982,6 +25982,8 @@ in
 
   tremulous = callPackage ../games/tremulous { };
 
+  tts = callPackage ../tools/audio/tts { };
+
   tuxpaint = callPackage ../games/tuxpaint { };
 
   tuxtype = callPackage ../games/tuxtype { };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c09db1550038..1b47ea9b35d9 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4611,6 +4611,8 @@ in {
 
   pkuseg = callPackage ../development/python-modules/pkuseg { };
 
+  pysbd = callPackage ../development/python-modules/pysbd { };
+
   python-csxcad = callPackage ../development/python-modules/python-csxcad { };
 
   python-openems = callPackage ../development/python-modules/python-openems { };