diff --git a/pkgs/data/fonts/rictydiminished-with-firacode/default.nix b/pkgs/data/fonts/rictydiminished-with-firacode/default.nix
new file mode 100644
index 00000000000..074fceeac94
--- /dev/null
+++ b/pkgs/data/fonts/rictydiminished-with-firacode/default.nix
@@ -0,0 +1,39 @@
+{ stdenv, fetchgit, fontforge, pythonFull }:
+
+stdenv.mkDerivation rec {
+  name = "rictydiminished-with-firacode-${version}";
+  version = "0.0.1";
+  src = fetchgit {
+    url = "https://github.com/hakatashi/RictyDiminished-with-FiraCode.git";
+    rev = "refs/tags/${version}";
+    sha256 = "12lhb0k4d8p4lzw9k6hlsxpfpc15zfshz1h5cbaa88sb8n5jh360";
+    fetchSubmodules = true;
+  };
+
+  buildPhase = ''
+    make
+  '';
+
+  installPhase = ''
+    mkdir -p $out/share/fonts/rictydiminished-with-firacode
+    cp *.ttf $out/share/fonts/rictydiminished-with-firacode
+  '';
+
+  nativeBuildInputs = [
+    fontforge
+    (pythonFull.withPackages (ps: [
+      ps.jinja2
+      ps."3to2"
+      ps.fonttools
+    ]))
+  ];
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/hakatashi/RictyDiminished-with-FiraCode;
+    description = "The best Japanese programming font meets the awesone ligatures of Firacode";
+    license = licenses.ofl;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ mt-caret ];
+  };
+}
+
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e2af723792f..c8cd658e88f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -12947,6 +12947,8 @@ with pkgs;
 
   raleway = callPackage ../data/fonts/raleway { };
 
+  rictydiminished-with-firacode = callPackage ../data/fonts/rictydiminished-with-firacode { };
+
   roboto = callPackage ../data/fonts/roboto { };
 
   roboto-mono = callPackage ../data/fonts/roboto-mono { };