diff --git a/default.nix b/default.nix
index 0979b45..b01e5af 100644
--- a/default.nix
+++ b/default.nix
@@ -1,5 +1,9 @@
 self: super:
 
 {
+  buildNimblePackage = super.callPackage ./pkgs/nim-packages/generic.nix { };
+
+  gintro = super.callPackage ./pkgs/nim-packages/gintro/default.nix { };
+
   shinto-cli = super.callPackage ./pkgs/shinto-cli { };
 }
diff --git a/pkgs/nim-packages/generic.nix b/pkgs/nim-packages/generic.nix
new file mode 100644
index 0000000..d44fe22
--- /dev/null
+++ b/pkgs/nim-packages/generic.nix
@@ -0,0 +1,41 @@
+{ stdenv, nim }:
+
+{ name, src, nimDeps ? [], buildInputs ? [], nativeBuildInputs ? [],
+  patches ? [], ... }:
+
+stdenv.mkDerivation {
+  name = name;
+  src = src;
+  patches = patches;
+  buildInputs = [ nim ] ++ buildInputs;
+  nativeBuildInputs = nativeBuildInputs;
+  LD_LIBRARY_PATH = stdenv.lib.makeLibraryPath (buildInputs ++ nativeBuildInputs);
+  buildPhase = ''
+    HOME=$TMPDIR
+    mkdir -p $HOME/.nimble/pkgs
+    echo "[]" > $HOME/.nimble/packages_official.json
+    '' + toString (map (dep: ''
+      if [ -d ${dep}/.nimble ]; then
+        cp -R ${dep}/.nimble/pkgs $HOME/.nimble/
+      else
+        cp -R ${dep} $HOME/.nimble/pkgs/${dep.name}
+      fi
+    ''
+    ) nimDeps) + ''
+    nimble install
+  '';
+  installPhase = ''
+    mkdir $out
+    nimbleDir=$TMPDIR/.nimble
+    if [ -d $nimbleDir/bin ]; then
+      cp -RL $nimbleDir/bin $out
+    fi
+    numberNimFiles=$(find $nimbleDir/pkgs/${name} -type f -name "*.nim" | wc -l)
+    numberDirectories=$(find $nimbleDir/pkgs/${name} -mindepth 1 -type d | wc -l)
+    if [ $numberNimFiles -gt 0 ] || [ $numberDirectories -gt 0 ]; then
+      mkdir -p $out/.nimble
+      cp -R $nimbleDir/pkgs $out/.nimble
+    fi
+  '';
+}
+
diff --git a/pkgs/nim-packages/gintro/allow-preinstalled-oldgtk3.patch b/pkgs/nim-packages/gintro/allow-preinstalled-oldgtk3.patch
new file mode 100644
index 0000000..43313b7
--- /dev/null
+++ b/pkgs/nim-packages/gintro/allow-preinstalled-oldgtk3.patch
@@ -0,0 +1,53 @@
+diff --git a/gintro.nimble b/gintro.nimble
+index 937984d..e4378bf 100644
+--- a/gintro.nimble
++++ b/gintro.nimble
+@@ -31,8 +31,6 @@ proc prep =
+     # quit("gintro: tmp directory already exists!")
+   mkDir(wd)
+   cd(wd)
+-  mkDir("ngtk3")
+-  cd("ngtk3")
+ 
+   cpFile(this / "tests" / "gen.nim", td / wd / "gen.nim")
+   cpFile(this / "tests" / "combinatorics.nim", td / wd / "combinatorics.nim")
+@@ -40,6 +38,8 @@ proc prep =
+   cd(td)
+   cd(wd)
+ 
++  mkDir("oldgtk3")
++  cd("oldgtk3")
+   try:
+     exec("wget https://raw.githubusercontent.com/StefanSalewski/oldgtk3/master/oldgtk3/gobject.nim -O gobject.nim")
+     exec("wget https://raw.githubusercontent.com/StefanSalewski/oldgtk3/master/oldgtk3/glib.nim -O glib.nim")
+@@ -57,6 +57,7 @@ proc prep =
+       echo "Nimgrab should be available in Nim/tools directory. You may compile it with 'nim c -d:ssl nimgrab.nim'"
+       echo "and put it into your search path"
+       echo "For the unlikely case that you have already full oldgtk3 package installed, we will just try to continue..."
++  cd("..")
+ 
+   exec("nim c gen.nim")
+   mkDir("nim_gi")
+@@ -70,7 +71,6 @@ proc prep =
+ 
+ #task prepare, "preparing gintro":
+ before install:
+-
+   echo "preparing gintro"
+   prep()
+   
+diff --git a/tests/gen.nim b/tests/gen.nim
+index ef3becf..d13eab4 100644
+--- a/tests/gen.nim
++++ b/tests/gen.nim
+@@ -31,8 +31,8 @@
+ # This module is really ugly currently  -- the first goal was to get a working gi solution
+ 
+ from os import `/`
+-import gir
+-import glib
++import oldgtk3/gir
++import oldgtk3/glib
+ import strutils
+ import sequtils
+ import streams
diff --git a/pkgs/nim-packages/gintro/default.nix b/pkgs/nim-packages/gintro/default.nix
new file mode 100644
index 0000000..ba5fbe9
--- /dev/null
+++ b/pkgs/nim-packages/gintro/default.nix
@@ -0,0 +1,51 @@
+{ stdenv, buildNimblePackage, fetchFromGitHub, glib, gobjectIntrospection,
+  gnome3, cairo, pango, librsvg, libnotify }:
+
+let
+  oldgtk3 = buildNimblePackage rec {
+    name = "oldgtk3-${version}";
+    version = "0.1.0";
+    src = fetchFromGitHub {
+      owner = "StefanSalewski";
+      repo = "oldgtk3";
+      rev = "8ad4bc7e790c2c4b01eff9ff4f7d7ecc2cac25e3";
+      sha256 = "1kfv4cwgfygbxfgnsyzcwvy5l17082zx9vb9kc75zj27qhlq9ygd";
+    };
+  };
+
+in buildNimblePackage rec {
+  name = "gintro-${version}";
+  version = "0.4.17";
+  
+  src = fetchFromGitHub {
+    owner = "StefanSalewski";
+    repo = "gintro";
+    rev = "v${version}";
+    sha256 = "1cyif60611gig0r65zlgk15rvxyp00dddqcd9bc54xx3znxmygbv";
+  };
+
+  patches = [ ./allow-preinstalled-oldgtk3.patch ];
+
+  nimDeps = [ oldgtk3 ];
+
+  buildInputs = [
+    glib
+    gobjectIntrospection
+    gnome3.gdk_pixbuf
+    gnome3.gtk
+    gnome3.gtksourceview
+    gnome3.vte
+    cairo
+    pango
+    librsvg
+    libnotify
+  ];
+
+  meta = with stdenv.lib; {
+    description = "High level GObject-Introspection based GTK3 bindings for Nim language";
+    homepage = https://github.com/StefanSalewski/gintro;
+    license = licenses.mit;
+    maintainers = with maintainers; [ lurchi ];
+    platforms = platforms.gnu ++ platforms.linux;
+  };
+}