diff --git a/pkgs/development/python-modules/fx2/default.nix b/pkgs/development/python-modules/fx2/default.nix
new file mode 100644
index 000000000000..fa5edc1077c6
--- /dev/null
+++ b/pkgs/development/python-modules/fx2/default.nix
@@ -0,0 +1,45 @@
+{ lib
+, buildPythonPackage
+, python
+, fetchFromGitHub
+, sdcc
+, libusb1
+, crcmod
+}:
+
+buildPythonPackage {
+  pname = "fx2";
+  version = "unstable-2019-08-27";
+
+  src = fetchFromGitHub {
+    owner = "whitequark";
+    repo = "libfx2";
+    rev = "dd1e42c7b46ff410dbb18beab46111bb5491400c";
+    sha256 = "0xvlmx6ym0ylrvnlqzf18d475wa0mfci7wkdbv30gl3hgdhsppjz";
+  };
+
+  nativeBuildInputs = [ sdcc ];
+
+  propagatedBuildInputs = [ libusb1 crcmod ];
+
+  preBuild = ''
+    cd software
+    ${python.pythonForBuild.interpreter} setup.py build_ext
+  '';
+
+  preInstall = ''
+    mkdir -p $out/share/libfx2
+    cp -R ../firmware/library/{.stamp,lib,include,fx2{rules,conf}.mk} \
+      $out/share/libfx2
+  '';
+
+  # installCheckPhase tries to run build_ext again and there are no tests
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Chip support package for Cypress EZ-USB FX2 series microcontrollers";
+    homepage = https://github.com/whitequark/libfx2;
+    license = licenses.bsd0;
+    maintainers = with maintainers; [ emily ];
+  };
+}
diff --git a/pkgs/development/python-modules/glasgow/default.nix b/pkgs/development/python-modules/glasgow/default.nix
new file mode 100644
index 000000000000..264a13aed5e7
--- /dev/null
+++ b/pkgs/development/python-modules/glasgow/default.nix
@@ -0,0 +1,66 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, sdcc
+, nmigen
+, fx2
+, libusb1
+, aiohttp
+, pyvcd
+, bitarray
+, crcmod
+, yosys
+, icestorm
+, nextpnr
+}:
+
+buildPythonPackage rec {
+  pname = "glasgow";
+  version = "unstable-2019-08-31";
+  realVersion = lib.substring 0 7 src.rev;
+
+  src = fetchFromGitHub {
+    owner = "GlasgowEmbedded";
+    repo = "Glasgow";
+    rev = "21641a13c6a0daaf8618aff3c5bfffcb26ef6cca";
+    sha256 = "1dpm1jmm4fg8xf17s6h9g5sc09gq8b6xq955sv2x11nrbqf98l4v";
+  };
+
+  nativeBuildInputs = [ sdcc ];
+
+  propagatedBuildInputs = [
+    nmigen
+    fx2
+    libusb1
+    aiohttp
+    pyvcd
+    bitarray
+    crcmod
+  ];
+
+  postPatch = ''
+    substituteInPlace software/setup.py \
+      --replace 'versioneer.get_version()' '"${realVersion}"'
+  '';
+
+  preBuild = ''
+    make -C firmware LIBFX2=${fx2}/share/libfx2
+    cp firmware/glasgow.ihex software/glasgow
+    cd software
+  '';
+
+  # a couple failing tests and also installCheck tries to build_ext again
+  doInstallCheck = false;
+  doCheck = false;
+
+  checkPhase = ''
+    python -m unittest discover
+  '';
+
+  meta = with lib; {
+    description = "Software for Glasgow, a digital interface multitool";
+    homepage = https://github.com/GlasgowEmbedded/Glasgow;
+    license = licenses.bsd0;
+    maintainers = with maintainers; [ emily ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c35fa4aae256..6638473874f6 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -818,6 +818,8 @@ in
 
   ezstream = callPackage ../tools/audio/ezstream { };
 
+  libfx2 = with python3Packages; toPythonApplication fx2;
+
   fxlinuxprintutil = callPackage ../tools/misc/fxlinuxprintutil { };
 
   genymotion = callPackage ../development/mobile/genymotion { };
@@ -842,6 +844,8 @@ in
 
   gitter = callPackage  ../applications/networking/instant-messengers/gitter { };
 
+  glasgow = with python3Packages; toPythonApplication glasgow;
+
   gucci = callPackage ../tools/text/gucci { };
 
   grc = callPackage ../tools/misc/grc { };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 390d8e2d3d02..00b606ef734c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2338,6 +2338,8 @@ in {
 
   future-fstrings = callPackage ../development/python-modules/future-fstrings { };
 
+  fx2 = callPackage ../development/python-modules/fx2 { };
+
   gateone = callPackage ../development/python-modules/gateone { };
 
   # TODO: Remove after 19.03 is branched off:
@@ -2348,6 +2350,8 @@ in {
 
   GeoIP = callPackage ../development/python-modules/GeoIP { };
 
+  glasgow = callPackage ../development/python-modules/glasgow { };
+
   gmpy = callPackage ../development/python-modules/gmpy { };
 
   gmpy2 = callPackage ../development/python-modules/gmpy2 { };