diff --git a/lib/informis/cl-gemini.nix b/lib/informis/cl-gemini.nix
index 75513bd..8b903dc 100644
--- a/lib/informis/cl-gemini.nix
+++ b/lib/informis/cl-gemini.nix
@@ -6,7 +6,7 @@ let
 
   lisp-helper = import ../lisp.nix { inherit pkgs; };
 
-  feedOpts = with types; {
+  feedOpts = { ... }: with types; {
     options = {
       url = mkOption {
         type = str;
@@ -28,13 +28,6 @@ let
     };
   };
 
-  register-feed = name: opts: ''
-    (cl-gemini:register-feed :name "${name}" :title "${opts.title}" :path "${opts.path}" :base-uri "${opts.url}")'';
-
-  register-feeds = feeds:
-    concatStringsSep "\n"
-      (mapAttrsToList register-feed feeds);
-
   ensure-certificates = hostname: user: key: cert: pkgs.writeShellScript "ensure-gemini-certificates.sh" ''
     if [[ ! -e ${key} ]]; then
       TARGET_CERT_DIR=$(${pkgs.coreutils}/bin/dirname ${cert})
@@ -49,6 +42,12 @@ let
     fi
   '';
 
+  generate-feeds = feeds:
+    let
+      feed-strings = mapAttrsToList (feed-name: opts:
+        "(cl-gemini:register-feed :name \"${feed-name}\" :title \"${opts.title}\" :path \"${opts.path}\" :base-uri \"${opts.url}\")") feeds;
+    in pkgs.writeText "gemini-local-feeds.lisp" (concatStringsSep "\n" feed-strings);
+
 in {
   options.informis.cl-gemini = with types; {
     enable = mkEnableOption "Enable the cl-gemini server.";
@@ -162,8 +161,9 @@ in {
           GEMINI_LISTEN_PORT = toString cfg.port;
           GEMINI_DOCUMENT_ROOT = cfg.document-root;
           GEMINI_TEXTFILES_ROOT = cfg.textfiles-archive;
+          GEMINI_FEEDS = "${generate-feeds cfg.feeds}";
 
-          CL_SOURCE_REGISTRY = lisp-helper.lisp-source-registry pkgs.cl-gemini;
+          CL_SOURCE_REGISTRY = "${lisp-helper.lisp-source-registry pkgs.cl-gemini}";
         };
 
         path = with pkgs; [
diff --git a/packages/cl-gemini.nix b/packages/cl-gemini.nix
index 4373f5d..560397a 100644
--- a/packages/cl-gemini.nix
+++ b/packages/cl-gemini.nix
@@ -15,11 +15,14 @@ let
             value)))
 
     (require :asdf)
+    (asdf:load-system :slynk)
     (asdf:load-system :cl-gemini)
-    (let ((slynk-port (uiop:getenv "GEMINI_SLYNK_PORT")))
+    (let ((slynk-port (uiop:getenvp "GEMINI_SLYNK_PORT")))
       (when slynk-port
-        (asdf:load-system :slynk)
         (slynk:create-server :port (parse-integer slynk-port) :dont-close t)))
+    (let ((feed-file (uiop:getenvp "GEMINI_FEEDS")))
+      (when feed-file
+        (load feed-file)))
     (cl-gemini:start-gemini-server
       (getenv-or-fail "GEMINI_LISTEN_IP")
       (getenv-or-fail "GEMINI_PRIVATE_KEY")
diff --git a/packages/lisp/agnostic-lizard.nix b/packages/lisp/agnostic-lizard.nix
new file mode 100644
index 0000000..490f6ef
--- /dev/null
+++ b/packages/lisp/agnostic-lizard.nix
@@ -0,0 +1,20 @@
+{ pkgs, localLispPackages, ... }:
+
+pkgs.lispPackages.buildLispPackage {
+  baseName = "agnostic-lizard";
+  packageName = "agnostic-lizard";
+  description = "Agnostic Lizard is a portable implementation of a code walker and in particular of the macroexpand-all function (and macro) that makes a best effort to be correct while not expecting much beyond what the Common Lisp standard requires.";
+
+  buildSystems = [ "agnostic-lizard" ];
+
+  deps = with localLispPackages; [];
+
+  src = pkgs.fetchgit {
+    url    = "https://gitlab.common-lisp.net/mraskin/agnostic-lizard.git";
+    rev    = "fe3a73719f05901c8819f8995a3ebae738257952";
+    sha256 = "0ax78y8w4zlp5dcwyhz2nq7j3shi49qn31dkfg8lv2jlg7mkwh2d";
+    fetchSubmodules = false;
+  };
+
+  asdFilesToKeep = [ "agnostic-lizard.asd" ];
+}
diff --git a/packages/lisp/cl-gemini.nix b/packages/lisp/cl-gemini.nix
index a282ec5..33a8725 100644
--- a/packages/lisp/cl-gemini.nix
+++ b/packages/lisp/cl-gemini.nix
@@ -33,7 +33,11 @@ in pkgs.lispPackages.buildLispPackage {
     osicat
     quicklisp
     quri
-    uiop
+    slynk
+    # slynk-asdf
+    slynk-macrostep
+    slynk-stepper
+    uiop   
     usocket-server
     xml-emitter
   ];
diff --git a/packages/lisp/default.nix b/packages/lisp/default.nix
index 999ec60..0c71093 100644
--- a/packages/lisp/default.nix
+++ b/packages/lisp/default.nix
@@ -1,6 +1,7 @@
 { pkgs, localLispPackages, ... }:
 
 rec {
+  agnostic-lizard = import ./agnostic-lizard.nix { inherit pkgs localLispPackages; };
   arrows  = import ./arrows.nix { inherit pkgs localLispPackages; };
   cl-gemini = import ./cl-gemini.nix { inherit pkgs localLispPackages; };
   cl-sasl = import ./cl-sasl.nix { inherit pkgs localLispPackages; };
@@ -12,6 +13,10 @@ rec {
   inferior-shell = import ./inferior-shell.nix { inherit pkgs localLispPackages; };
   ip-utils = import ./ip-utils.nix { inherit pkgs localLispPackages; };
   osicat = import ./osicat.nix { inherit pkgs localLispPackages; };
+  slynk = import ./slynk.nix { inherit pkgs localLispPackages; };
+  slynk-asdf = import ./slynk-asdf.nix { inherit pkgs localLispPackages; };
+  slynk-macrostep = import ./slynk-macrostep.nix { inherit pkgs localLispPackages; };
+  slynk-stepper = import ./slynk-stepper.nix { inherit pkgs localLispPackages; };
   usocket-server = import ./usocket-server.nix { inherit pkgs localLispPackages; };
   xml-emitter = import ./xml-emitter.nix { inherit pkgs localLispPackages; };
 }
diff --git a/packages/lisp/slynk-asdf.nix b/packages/lisp/slynk-asdf.nix
new file mode 100644
index 0000000..379296a
--- /dev/null
+++ b/packages/lisp/slynk-asdf.nix
@@ -0,0 +1,22 @@
+{ pkgs, localLispPackages, ... }:
+
+pkgs.lispPackages.buildLispPackage {
+  baseName = "slynk-asdf";
+  packageName = "slynk-asdf";
+  description = "SLY-ASDF is a contrib for SLY that adds support for editing ASDF systems, exposing several utilities for working with and loading systems.";
+
+  buildSystems = [ "slynk-asdf" ];
+
+  deps = with localLispPackages; [
+    slynk
+  ];
+
+  src = pkgs.fetchgit {
+    url    = "https://github.com/mmgeorge/sly-asdf.git";
+    rev    = "95ca71ddeb6132c413e1e4352b136f41ed9254f1";
+    sha256 = "1dvjwdan3qd3x716zgziy5vbq2972rz8pdqi7b40haqg01f33qf4";
+    fetchSubmodules = false;
+  };
+
+  asdFilesToKeep = [ "slynk-asdf.asd" ];
+}
diff --git a/packages/lisp/slynk-macrostep.nix b/packages/lisp/slynk-macrostep.nix
new file mode 100644
index 0000000..107ffe4
--- /dev/null
+++ b/packages/lisp/slynk-macrostep.nix
@@ -0,0 +1,22 @@
+{ pkgs, localLispPackages, ... }:
+
+pkgs.lispPackages.buildLispPackage {
+  baseName = "slynk-macrostep";
+  packageName = "slynk-macrostep";
+  description = "sly-macrostep is a SLY contrib for expanding CL macros right inside the source file.";
+
+  buildSystems = [ "slynk-macrostep" ];
+
+  deps = with localLispPackages; [
+    slynk
+  ];
+
+  src = pkgs.fetchgit {
+    url    = "https://github.com/joaotavora/sly-macrostep.git";
+    rev    = "5113e4e926cd752b1d0bcc1508b3ebad5def5fad";
+    sha256 = "1nxf28gn4f3n0wnv7nb5sgl36fz175y470zs9hig4kq8cp0yal0r";
+    fetchSubmodules = false;
+  };
+
+  asdFilesToKeep = [ "slynk-macrostep.asd" ];
+}
diff --git a/packages/lisp/slynk-stepper.nix b/packages/lisp/slynk-stepper.nix
new file mode 100644
index 0000000..e134885
--- /dev/null
+++ b/packages/lisp/slynk-stepper.nix
@@ -0,0 +1,23 @@
+{ pkgs, localLispPackages, ... }:
+
+pkgs.lispPackages.buildLispPackage {
+  baseName = "slynk-stepper";
+  packageName = "slynk-stepper";
+  description = "A portable Common Lisp stepper interface.";
+
+  buildSystems = [ "slynk-stepper" ];
+
+  deps = with localLispPackages; [
+    agnostic-lizard
+    slynk
+  ];
+
+  src = pkgs.fetchgit {
+    url    = "https://github.com/joaotavora/sly-stepper.git";
+    rev    = "ec3c0a7f3c8b82926882e5fcfdacf67b86d989f8";
+    sha256 = "1hxniaxifdw3m4y4yssgy22xcmmf558wx7rpz66wy5hwybjslf7b";
+    fetchSubmodules = false;
+  };
+
+  asdFilesToKeep = [ "slynk-stepper.asd" ];
+}
diff --git a/packages/lisp/slynk.nix b/packages/lisp/slynk.nix
new file mode 100644
index 0000000..ab8e91f
--- /dev/null
+++ b/packages/lisp/slynk.nix
@@ -0,0 +1,32 @@
+{ pkgs, localLispPackages, ... }:
+
+pkgs.lispPackages.buildLispPackage {
+  baseName = "slynk";
+  packageName = "slynk";
+  description = "SLY is Sylvester the Cat's Common Lisp IDE for Emacs.";
+
+  buildSystems = [
+    "slynk"
+    "slynk/arglists"
+    "slynk/fancy-inspector"
+    "slynk/package-fu"
+    "slynk/mrepl"
+    "slynk/trace-dialog"
+    "slynk/profiler"
+    "slynk/stickers"
+    "slynk/stickers"
+    "slynk/indentation"
+    "slynk/retro"
+  ];
+
+  deps = with localLispPackages; [];
+
+  src = pkgs.fetchgit {
+    url    = "https://github.com/joaotavora/sly.git";
+    rev    = "1.0.43";
+    sha256 = "11yclc8i6gpy26m1yj6bid6da22639zpil1qzj87m5gfvxiv4zg6";
+    fetchSubmodules = false;
+  };
+
+  asdFilesToKeep = [ "slynk/slynk.asd" ];
+}