diff --git a/dotfiles/dot_config/fish/functions/pdf-compress.fish b/dotfiles/dot_config/fish/functions/pdf-compress.fish
new file mode 100644
index 0000000..93b1a2f
--- /dev/null
+++ b/dotfiles/dot_config/fish/functions/pdf-compress.fish
@@ -0,0 +1,5 @@
+#!/usr/bin/env fish
+
+function pdf-compress --description 'compress a pdf using ghostscript. produces output.pdf'
+    gs -sDEVICE=pdfwrite -dPDFSETTINGS=/printer -dNOPAUSE -dBATCH -sOutputFile=output.pdf $argv
+end
diff --git a/flake.lock b/flake.lock
index abe1e97..44c6367 100644
--- a/flake.lock
+++ b/flake.lock
@@ -174,11 +174,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1734119587,
-        "narHash": "sha256-AKU6qqskl0yf2+JdRdD0cfxX4b9x3KKV5RqA6wijmPM=",
+        "lastModified": 1734424634,
+        "narHash": "sha256-cHar1vqHOOyC7f1+tVycPoWTfKIaqkoe1Q6TnKzuti4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "3566ab7246670a43abd2ffa913cc62dad9cdf7d5",
+        "rev": "d3c42f187194c26d9f0309a8ecc469d6c878ce33",
         "type": "github"
       },
       "original": {
@@ -190,11 +190,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1734323986,
-        "narHash": "sha256-m/lh6hYMIWDYHCAsn81CDAiXoT3gmxXI9J987W5tZrE=",
+        "lastModified": 1734600368,
+        "narHash": "sha256-nbG9TijTMcfr+au7ZVbKpAhMJzzE2nQBYmRvSdXUD8g=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "394571358ce82dff7411395829aa6a3aad45b907",
+        "rev": "b47fd6fa00c6afca88b8ee46cfdb00e104f50bca",
         "type": "github"
       },
       "original": {
diff --git a/home/home.nix b/home/home.nix
index 858e200..dd9fc6a 100644
--- a/home/home.nix
+++ b/home/home.nix
@@ -27,6 +27,7 @@
       dconf2nix
       readline
       gnupg
+      imagemagick
       gcc
       gnutls
       gettext
@@ -91,7 +92,7 @@
       ccl
       racket
       gdu
-
+      poppler_utils
       editorconfig-core-c
       clang-tools
       cljfmt
@@ -154,6 +155,7 @@
       fishPlugins.autopair
       fishPlugins.forgit
       fishPlugins.colored-man-pages
+      imgcat
 
       via
       vial
@@ -162,6 +164,15 @@
       tailscale
       font-manager
 
+      scribus
+      pdfarranger
+      tdf
+      pdfchain
+      pdftk
+      ghostscript
+
+      zathura
+
       gpu-viewer
       mesa-demos
 
@@ -323,6 +334,8 @@
       (callPackage ../packages/the-usual-suspects/ostirus/ostirus.nix {})
       (callPackage ../packages/the-usual-suspects/osirus/osirus.nix {})
 
+      # (callPackage ../packages/cecelia5/default.nix {})
+
       # Fonts
       fira-code
       fira
diff --git a/packages/cecelia5/default.nix b/packages/cecelia5/default.nix
new file mode 100644
index 0000000..b073557
--- /dev/null
+++ b/packages/cecelia5/default.nix
@@ -0,0 +1,46 @@
+{
+  lib,
+  python311,
+  fetchFromGitHub,
+  pkgs
+}:
+
+let
+  python311 = pkgs.python311.override {
+    self = python311;
+    packageOverrides = pyfinal: pyprev: {
+      pyo = pyfinal.callPackage ./pyo.nix { };
+    };
+  };
+
+in
+python311.pkgs.buildPythonApplication rec {
+  pname = "cecilia5";
+  version = "5.4.0";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "belangeo";
+    repo = "cecilia5";
+    rev = version;
+    hash = "sha256-8WnzVSaDz4x6JgRGSI4Ra60hDS1fy+oCRLdyQIfq6WI=";
+  };
+
+  build-system = [
+    python311.pkgs.setuptools
+    python311.pkgs.wheel
+    python311.pkgs.pyo
+    python311.pkgs.wxpython
+    python311.pkgs.numpy
+  ];
+
+  pythonImportsCheck = [
+    "cecilia5"
+  ];
+
+  meta = {
+    description = "Ear-bending noises and music";
+    homepage = "https://github.com/belangeo/cecilia5";
+    mainProgram = "cecilia5";
+  };
+}
diff --git a/packages/cecelia5/pyo.nix b/packages/cecelia5/pyo.nix
new file mode 100644
index 0000000..727aeae
--- /dev/null
+++ b/packages/cecelia5/pyo.nix
@@ -0,0 +1,35 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchPypi,
+  setuptools,
+  wheel,
+  pkgs
+}:
+
+buildPythonPackage rec {
+  pname = "pyo";
+  version = "1.0.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-4ELZR6C2QbQA4ij54h7soh34v0iVxtvQE/h2ONdyjjE=";
+  };
+
+  propagatedBuildInputs = with pkgs; [
+    portaudio
+    libsndfile
+    portmidi
+    liblo
+  ];
+
+  # do not run tests
+  doCheck = false;
+
+  # specific to buildPythonPackage, see its reference
+  pyproject = true;
+  build-system = [
+    setuptools
+    wheel
+  ];
+}