diff --git a/third_party/lisp/checkl.nix b/third_party/lisp/checkl.nix
deleted file mode 100644
index 4fb92cb37..000000000
--- a/third_party/lisp/checkl.nix
+++ /dev/null
@@ -1,26 +0,0 @@
-{ depot, pkgs, ... }:
-
-let
-  inherit (depot.nix.buildLisp) bundled;
-
-  src = pkgs.fetchFromGitHub {
-    owner = "rpav";
-    repo = "CheckL";
-    rev = "80328800d047fef9b6e32dfe6bdc98396aee3cc9";
-    sha256 = "0bpisihx1gay44xmyr1dmhlwh00j0zzi04rp9fy35i95l2r4xdlx";
-  };
-
-in depot.nix.buildLisp.library {
-  name = "checkl";
-  deps = with depot.third_party.lisp; [
-    (bundled "asdf")
-    marshal
-    fiveam
-  ];
-
-  srcs = map (f: src + ("/" + f)) [
-    "package.lisp"
-    "checkl.lisp"
-    "formalize.lisp"
-  ];
-}
diff --git a/third_party/lisp/cl-arrows.nix b/third_party/lisp/cl-arrows.nix
deleted file mode 100644
index 778adbf69..000000000
--- a/third_party/lisp/cl-arrows.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ depot, pkgs, ... }:
-
-let
-  src = pkgs.fetchgit {
-    url = "https://github.com/nightfly19/cl-arrows.git";
-    rev = "cbb46b69a7de40f1161c9caaf6cef93b3af9994f";
-    hash = "sha256:0la2vr10510vmx29w9p3sj1qi1sych0crcpy4kdgxzn8m7kqlli0";
-  };
-in depot.nix.buildLisp.library {
-  name = "cl-arrows";
-  deps = [];
-  srcs = [
-    "${src}/packages.lisp"
-    "${src}/arrows.lisp"
-  ];
-}
diff --git a/third_party/lisp/data-sift.nix b/third_party/lisp/data-sift.nix
deleted file mode 100644
index 18593421e..000000000
--- a/third_party/lisp/data-sift.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{ depot, pkgs, ... }:
-
-let
-
-  src = pkgs.fetchFromGitHub {
-    owner = "archimag";
-    repo = "data-sift";
-    rev = "fd617d8200cdcc1b87ecf45ab59bb38e8b16ef7e";
-    sha256 = "1v7gf0x4ibjzp0c56n9m77hxdgwcm9356zlk5n4l3fx4i0hj6146";
-  };
-
-in depot.nix.buildLisp.library {
-  name = "data-sift";
-  deps = with depot.third_party.lisp; [
-    cl-ppcre
-    parse-number
-    alexandria
-    puri
-  ];
-
-  srcs = map (f: src + ("/src/" + f)) [
-    "packages.lisp"
-    "conditions.lisp"
-    "sift.lisp"
-  ];
-
-}
diff --git a/third_party/lisp/restas.nix b/third_party/lisp/restas.nix
deleted file mode 100644
index cf231286e..000000000
--- a/third_party/lisp/restas.nix
+++ /dev/null
@@ -1,41 +0,0 @@
-{ depot, pkgs, ... }:
-
-let
-
-  src = pkgs.fetchFromGitHub {
-    owner = "archimag";
-    repo = "restas";
-    rev = "81bbbab6b36f81f846f78e71232e9d3d15f6d952";
-    sha256 = "00ng6jik1lwjw3bbxhijy8s0ml24lgm73liwrr01gcsb0r6wrjjn";
-  };
-
-in depot.nix.buildLisp.library {
-  name = "restas";
-  deps = with depot.third_party.lisp; [
-    cffi
-    hunchentoot
-    bordeaux-threads
-    routes
-    alexandria
-    data-sift
-  ];
-
-  srcs = map (f: src + ("/src/" + f)) [
-    "packages.lisp"
-    "special.lisp"
-    "declarations.lisp"
-    "errors.lisp"
-    "render.lisp"
-    "context.lisp"
-    "module.lisp"
-    "route.lisp"
-    "decorators.lisp"
-    "vhost.lisp"
-    "hunchentoot.lisp"
-    "policy.lisp"
-  ];
-
-  brokenOn = [
-    "ecl" # dynamic cffi
-  ];
-}