diff --git a/install.sh b/install.sh
index 5ca8df3..34288af 100755
--- a/install.sh
+++ b/install.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i bash -p stow
-stow -d `dirname $0` nix git x pentadactyl
+stow -d `dirname $0` -t ~ nix git x pentadactyl
diff --git a/nix/.nixpkgs/config.nix b/nix/.nixpkgs/config.nix
index 0bb9f5e..67f5459 100644
--- a/nix/.nixpkgs/config.nix
+++ b/nix/.nixpkgs/config.nix
@@ -24,6 +24,7 @@
     wine = pkgs.wine.override { wineRelease = "staging"; wineBuild = "wineWow"; };
 
     ftb = pkgs.callPackage ./ftb.nix {};
+    pyroscope = pkgs.callPackage ./pyroscope.nix {};
 
 
     envs = recurseIntoAttrs {
@@ -140,6 +141,8 @@
     hosts = {
       ascanius = with envs; [apps code_min de games envs.js pdf nix media gcc misc];
       woodhouse = with envs; [de media misc kodi chromium spotify];
+      pennyworth = [];
+      frumar = with envs; [bup git-annex rtorrent pyroscope];
     };
     pandocdeps = (pkgs.texlive.combine {
       inherit (pkgs.texlive)
diff --git a/nix/.nixpkgs/pyroscope.nix b/nix/.nixpkgs/pyroscope.nix
new file mode 100644
index 0000000..637fbdf
--- /dev/null
+++ b/nix/.nixpkgs/pyroscope.nix
@@ -0,0 +1,80 @@
+  let
+    pkgs = import <nixpkgs> {};
+    pypkg = pkgs.python27Packages;
+  in
+  { stdenv ? pkgs.stdenv, python27 ? pkgs.python27, fetchFromGitHub ? pkgs.fetchFromGitHub,
+    virtualenv ? pypkg.virtualenv, lib ? pkgs.lib }:
+  let
+  inherit (lib) concatMapStringsSep mapAttrsToList concatStringsSep;
+  deps = {
+    # the script fetches two other repos from github
+    pyrobase = fetchFromGitHub {
+      owner = "pyroscope";
+      repo = "pyrobase";
+      rev = "b9253cb4a8a5781a859e3b1bc79d537d76abc326";
+      sha256 = "0c2vjjb9bdrd2rx0cys3jzdwr5ljzsh14s18j5np6yg2vdcya35g";
+    };
+    auvyon = fetchFromGitHub {
+      owner = "pyroscope";
+      repo = "auvyon";
+      rev = "5115c26f966df03df92a9934580b66c72e23d4e8";
+      sha256 = "1qhig6xjv62gq4mj8rbhx6ifcffg321444j2fm6j8qk3yv8w5v4c";
+    };
+  };
+  depnames = pkgs.lib.attrNames deps;
+  outputscripts = ["chtor" "hashcheck" "lstor" "mktor" "pyroadmin" "pyrotorque" "rtcontrol" "rtevent" "rtmv" "rtxmlrpc"];
+  in
+  stdenv.mkDerivation {
+    name = "pyroscope";
+    version = "0.1.0.0";
+    src = fetchFromGitHub {
+      owner = "pyroscope";
+      repo = "pyrocore";
+      rev = "75393631130258d477adf3b4c77b2db085447383";
+      sha256 = "02msqy40n41wzph75m5jiwphqj6wl2szp7izjwdlhrwfmr7cpamz";
+    };
+    buildInputs = [ python27 virtualenv ];
+    patchPhase = ''
+      patchShebangs src/scripts
+    '';
+    # make a virtualenv, install paver in it
+    # XXX: impure :/
+    buildPhase = ''
+      virtualenv --never-download .
+      bin/pip --no-cache-dir install "paver==1.2.4"
+      bin/pip --no-cache-dir install "Tempita>=0.5.1"
+      bin/pip --no-cache-dir install "APScheduler>=2.0.2,<3"
+      bin/pip --no-cache-dir install "waitress>=0.8.2"
+      bin/pip --no-cache-dir install "WebOb>=1.2.3"
+    '' +
+    (concatStringsSep "\n" (mapAttrsToList (depname: source:
+      ''cp -R ${source} ./${depname}
+      chmod -R +w ./${depname}
+      (builtin cd ${depname} && ../bin/paver -q develop -U)
+      '') deps)) +
+    ''
+      ./bin/paver -q develop -U
+      ./bin/paver bootstrap
+    '';
+    # copy the neccesary parts of the virtualenv
+    installPhase = ''
+      mkdir -p $out/bin
+      mkdir -p $out/venv/{lib,bin,src}
+      cp -R ./lib $out/venv/
+      install ./bin/python2.7 $out/venv/bin
+      cp -R src $out/venv/src/pyrocore
+      ${concatMapStringsSep "\n" (x: ''
+      cp -R ${x}/src $out/venv/src/${x}
+      '') depnames}
+      ${concatMapStringsSep "\n" (x: "install bin/${x} $out/bin/${x}") outputscripts}
+    '';
+    # patch the bin interpreter into the virtualenv and fix the internal .egg-links
+    fixupPhase =
+      (concatMapStringsSep "\n" (x: ''
+        echo -e "$out/venv/src/${x}\n../" > $out/venv/lib/python2.7/site-packages/${x}.egg-link
+      '') (depnames ++ ["pyrocore"])) + ''
+      sed -i -e "1 s|.*|#\!$out/venv/bin/python2.7|" $out/bin/*
+    '';
+    dontPatchShebangs = true;
+
+  }