diff --git a/overrides/lispPackages/default.nix b/overrides/lispPackages/default.nix
deleted file mode 100644
index c6502975e..000000000
--- a/overrides/lispPackages/default.nix
+++ /dev/null
@@ -1,8 +0,0 @@
-# One of Gemma's dependencies is missing in nixpkgs' Quicklisp
-# package set, it is overlaid locally here.
-{ pkgs, ... }:
-
-import ./quicklisp.nix {
-  inherit (pkgs) lib;
-  inherit (pkgs.third_party) lispPackages;
-}
diff --git a/overrides/lispPackages/quicklisp-to-nix-output/cl-prevalence.nix b/overrides/lispPackages/quicklisp-to-nix-output/cl-prevalence.nix
deleted file mode 100644
index 4e5e3ec5d..000000000
--- a/overrides/lispPackages/quicklisp-to-nix-output/cl-prevalence.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-args @ { fetchurl, ... }:
-rec {
-  baseName = ''cl-prevalence'';
-  version = ''20130720-hg'';
-
-  description = ''Common Lisp Prevalence Package'';
-
-  deps = [ args."s-sysdeps" args."s-xml" ];
-
-  src = fetchurl {
-    url = ''http://beta.quicklisp.org/archive/cl-prevalence/2013-07-20/cl-prevalence-20130720-hg.tgz'';
-    sha256 = ''09pqbw6xcgy0242npiqw7sd8jwwjc0kz7m0sas48jjr0zgnnmi89'';
-  };
-
-  packageName = "cl-prevalence";
-
-  asdFilesToKeep = ["cl-prevalence.asd"];
-  overrides = x: x;
-}
-/* (SYSTEM cl-prevalence DESCRIPTION Common Lisp Prevalence Package SHA256
-    09pqbw6xcgy0242npiqw7sd8jwwjc0kz7m0sas48jjr0zgnnmi89 URL
-    http://beta.quicklisp.org/archive/cl-prevalence/2013-07-20/cl-prevalence-20130720-hg.tgz
-    MD5 6176c34b8e1621b65906b1575d9fa20d NAME cl-prevalence FILENAME
-    cl-prevalence DEPS
-    ((NAME s-sysdeps FILENAME s-sysdeps) (NAME s-xml FILENAME s-xml))
-    DEPENDENCIES (s-sysdeps s-xml) VERSION 20130720-hg SIBLINGS
-    (cl-prevalence-test) PARASITES NIL) */
diff --git a/overrides/lispPackages/quicklisp-to-nix-output/s-sysdeps.nix b/overrides/lispPackages/quicklisp-to-nix-output/s-sysdeps.nix
deleted file mode 100644
index 1c28ec6e2..000000000
--- a/overrides/lispPackages/quicklisp-to-nix-output/s-sysdeps.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-args @ { fetchurl, ... }:
-rec {
-  baseName = ''s-sysdeps'';
-  version = ''20130128-git'';
-
-  description = ''An abstraction layer over platform dependent functionality'';
-
-  deps = [ ];
-
-  src = fetchurl {
-    url = ''http://beta.quicklisp.org/archive/s-sysdeps/2013-01-28/s-sysdeps-20130128-git.tgz'';
-    sha256 = ''048q0mzypnm284bvv7036d4z7bv7rdcqks5l372s74kq279l2y00'';
-  };
-
-  packageName = "s-sysdeps";
-
-  asdFilesToKeep = ["s-sysdeps.asd"];
-  overrides = x: x;
-}
-/* (SYSTEM s-sysdeps DESCRIPTION
-    An abstraction layer over platform dependent functionality SHA256
-    048q0mzypnm284bvv7036d4z7bv7rdcqks5l372s74kq279l2y00 URL
-    http://beta.quicklisp.org/archive/s-sysdeps/2013-01-28/s-sysdeps-20130128-git.tgz
-    MD5 2fe61fadafd62ef9597e17b4783889ef NAME s-sysdeps FILENAME s-sysdeps DEPS
-    NIL DEPENDENCIES NIL VERSION 20130128-git SIBLINGS NIL PARASITES NIL) */
diff --git a/overrides/lispPackages/quicklisp-to-nix-output/s-xml.nix b/overrides/lispPackages/quicklisp-to-nix-output/s-xml.nix
deleted file mode 100644
index ec12dde52..000000000
--- a/overrides/lispPackages/quicklisp-to-nix-output/s-xml.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-args @ { fetchurl, ... }:
-rec {
-  baseName = ''s-xml'';
-  version = ''20150608-git'';
-
-  parasites = [ "s-xml.examples" "s-xml.test" ];
-
-  description = ''Simple Common Lisp XML Parser'';
-
-  deps = [ ];
-
-  src = fetchurl {
-    url = ''http://beta.quicklisp.org/archive/s-xml/2015-06-08/s-xml-20150608-git.tgz'';
-    sha256 = ''0cy36wqzasqma4maw9djq1vdwsp5hxq8svlbnhbv9sq9zzys5viq'';
-  };
-
-  packageName = "s-xml";
-
-  asdFilesToKeep = ["s-xml.asd"];
-  overrides = x: x;
-}
-/* (SYSTEM s-xml DESCRIPTION Simple Common Lisp XML Parser SHA256
-    0cy36wqzasqma4maw9djq1vdwsp5hxq8svlbnhbv9sq9zzys5viq URL
-    http://beta.quicklisp.org/archive/s-xml/2015-06-08/s-xml-20150608-git.tgz
-    MD5 9c31c80f0661777c493fab683f776716 NAME s-xml FILENAME s-xml DEPS NIL
-    DEPENDENCIES NIL VERSION 20150608-git SIBLINGS NIL PARASITES
-    (s-xml.examples s-xml.test)) */
diff --git a/overrides/lispPackages/quicklisp.nix b/overrides/lispPackages/quicklisp.nix
deleted file mode 100644
index 1d23db762..000000000
--- a/overrides/lispPackages/quicklisp.nix
+++ /dev/null
@@ -1,26 +0,0 @@
-{ lib, lispPackages }:
-
-let inherit (lispPackages) buildLispPackage qlOverrides fetchurl;
-in lispPackages // lib.fix(self: {
-  "s-xml" = buildLispPackage
-    ((f: x: (x // (f x)))
-       (qlOverrides."s-xml" or (x: {}))
-       (import ./quicklisp-to-nix-output/s-xml.nix {
-         inherit fetchurl;
-       }));
-
-  "s-sysdeps" = buildLispPackage
-    ((f: x: (x // (f x)))
-       (qlOverrides."s-sysdeps" or (x: {}))
-       (import ./quicklisp-to-nix-output/s-sysdeps.nix {
-         inherit fetchurl;
-       }));
-
-  "cl-prevalence" = buildLispPackage
-    ((f: x: (x // (f x)))
-       (qlOverrides."cl-prevalence" or (x: {}))
-       (import ./quicklisp-to-nix-output/cl-prevalence.nix {
-         inherit fetchurl;
-         inherit (self) s-sysdeps s-xml;
-       }));
-})
diff --git a/third_party/default.nix b/third_party/default.nix
index fca4ce94c..159740490 100644
--- a/third_party/default.nix
+++ b/third_party/default.nix
@@ -55,7 +55,6 @@ let
       kontemplate
       lib
       libredirect
-      lispPackages
       llvmPackages
       luajit
       luatex