diff --git a/ci-builds.nix b/ci-builds.nix
index fe1d2c058..f686bbf24 100644
--- a/ci-builds.nix
+++ b/ci-builds.nix
@@ -102,7 +102,9 @@ in lib.fix (self: {
     hgeometry-combinatorial
     vinyl
     comonad-extras
-    depot.third_party.haskell-language-server.ghc883
+
+    # TODO(grfn): Disabled because of build errors with recent nixpkgs
+    # depot.third_party.haskell-language-server.ghc883
   ];
 
   # User-specific build targets
@@ -116,7 +118,7 @@ in lib.fix (self: {
   ];
 
   glittershark = with depot.users.glittershark; [
-    xanthous
+    # xanthous
     keyboard.layout
     owothia
 
diff --git a/third_party/default.nix b/third_party/default.nix
index 4bbcc6862..3be832320 100644
--- a/third_party/default.nix
+++ b/third_party/default.nix
@@ -5,11 +5,11 @@
 { ... }:
 
 let
-  # Tracking nixos-unstable as of 2020-06-10.
-  nixpkgsCommit = "467ce5a9f45aaf96110b41eb863a56866e1c2c3c";
+  # Tracking nixos-unstable as of 2020-08-04.
+  nixpkgsCommit = "840c782d507d60aaa49aa9e3f6d0b0e780912742";
   nixpkgsSrc = fetchTarball {
     url = "https://github.com/NixOS/nixpkgs-channels/archive/${nixpkgsCommit}.tar.gz";
-    sha256 = "0qz7wgi61pdb335n18xm8rfwddckwv0vg8n7fii5abrrx47vnqcj";
+    sha256 = "14q3kvnmgz19pgwyq52gxx0cs90ddf24pnplmq33pdddbb6c51zn";
   };
   nixpkgs = import nixpkgsSrc {
     config.allowUnfree = true;
@@ -21,11 +21,11 @@ let
     ];
   };
 
-  # Tracking nixos-20.03 as of 2020-05-22
-  stableCommit = "48723f48ab92381f0afd50143f38e45cf3080405";
+  # Tracking nixos-20.03 as of 2020-08-04.
+  stableCommit = "977000f149bd4ddb65bf1af09552898a0f305c72";
   stableNixpkgsSrc = fetchTarball {
     url = "https://github.com/NixOS/nixpkgs-channels/archive/${stableCommit}.tar.gz";
-    sha256 = "0h3b3l867j3ybdgimfn76lw7w6yjhszd5x02pq5827l659ihcf53";
+    sha256 = "1ad3bviywxd64g4vwk4ppjkkajd3rfqjhnp6xcz3w0ih0sbn0rh5";
   };
   stableNixpkgs = import stableNixpkgsSrc {};
 
diff --git a/third_party/haskell-language-server/hls.nix b/third_party/haskell-language-server/hls.nix
index 0c7f52928..668827125 100644
--- a/third_party/haskell-language-server/hls.nix
+++ b/third_party/haskell-language-server/hls.nix
@@ -192,8 +192,8 @@ let
 
             semialign = self.callHackageDirect {
               pkg = "semialign";
-              ver = "1.1";
-              sha256 = "01wj9sv44y95zvidclvl3qkxrg777n46f1qxwnzq0mw2a9mi6frz";
+              ver = "1.1.0.1";
+              sha256 = "1xs5dvz87gx6xnannw6bc70nzr8ffhk0j6n7n0p5dqair9sz77x4";
             } {};
 
             semigroups = self.callHackageDirect {
diff --git a/third_party/haskell_overlay/default.nix b/third_party/haskell_overlay/default.nix
index 76e297173..ab0d175a6 100644
--- a/third_party/haskell_overlay/default.nix
+++ b/third_party/haskell_overlay/default.nix
@@ -1,6 +1,28 @@
 { pkgs ? import ./nixpkgs.nix {} }:
 
 self: super: with pkgs.haskell.lib; rec {
+  aeson = doJailbreak super.aeson;
+
+  attoparsec = doJailbreak super.attoparsec;
+
+  cassava = doJailbreak super.cassava;
+
+  fgl = overrideSrc (doJailbreak super.fgl) rec {
+    src = pkgs.fetchzip {
+      url = "mirror://hackage/fgl-${version}/fgl-${version}.tar.gz";
+      sha256 = "0spyd56b2rmwp8n6h167rfjwy8lpcvar1p2rqhw9q580h2l9v61l";
+    };
+    version = "5.7.0.3";
+  };
+
+  fgl-arbitrary = overrideSrc super.fgl-arbitrary rec {
+    src = pkgs.fetchzip {
+      url = "mirror://hackage/fgl-arbitrary-${version}/fgl-arbitrary-${version}.tar.gz";
+      sha256 = "0bacdv51am13x5k64xvmxcs5gkdkh0gpmnh05wgd2vqg1n8r7fwb";
+    };
+    version = "0.2.0.6";
+  };
+
   generic-arbitrary = appendPatch
     super.generic-arbitrary
     [ ./patches/generic-arbitrary-export-garbitrary.patch ];
@@ -20,6 +42,58 @@ self: super: with pkgs.haskell.lib; rec {
       sha256 = "12k41wd9fd1y3jd5djwcpwg2s1cva87wh14i0m1yn49zax9wl740";
     } {};
 
+  psqueues = doJailbreak super.psqueues;
+
+  random = dontCheck (self.callHackageDirect {
+    pkg = "random";
+    ver = "1.2.0";
+    sha256 = "06s3mmqbsfwv09j2s45qnd66nrxfp9280gnl9ng8yh128pfr7bjh";
+  } {});
+
+  random-source = overrideSrc super.random-source rec {
+    src = pkgs.fetchzip {
+      url = "mirror://hackage/random-source-${version}/random-source-${version}.tar.gz";
+      sha256 = "0yx0i4fv1xg535zd2isczfngsq5740wzl6w44168lxdmpw9fmsyz";
+    };
+    # downgraded as the latest version was causing a ghc crash:
+    # https://gitlab.haskell.org/ghc/ghc/-/issues/18537
+    version = "0.3.0.8";
+  };
+
+  semialign = self.callHackageDirect {
+    pkg = "semialign";
+    ver = "1.1.0.1";
+    sha256 = "1xs5dvz87gx6xnannw6bc70nzr8ffhk0j6n7n0p5dqair9sz77x4";
+  } {};
+
+  splitmix = dontCheck (self.callHackageDirect {
+    pkg = "splitmix";
+    ver = "0.1";
+    sha256 = "1k7l07h2w4fhjdqiqvw48if0irx0ngv6niach265j7lbfxsm8qql";
+  } {});
+
+  hedgehog = doJailbreak super.hedgehog;
+
+  hspec-core = dontCheck super.hspec-core;
+
+  QuickCheck = overrideSrc super.QuickCheck rec {
+    src = pkgs.fetchzip {
+      url = "mirror://hackage/QuickCheck-${version}/QuickCheck-${version}.tar.gz";
+      sha256 = "0x9pnr9m81jlywj38w3530zw1g0xmfszmj9303m2fp58zpad96h0";
+    };
+    version = "2.14.1";
+  };
+
+  test-framework-quickcheck2 = doJailbreak super.test-framework-quickcheck2;
+
+  vector = overrideSrc (doJailbreak super.vector) rec {
+    src = pkgs.fetchzip {
+      url = "mirror://hackage/vector-${version}/vector-${version}.tar.gz";
+      sha256 = "1312lpb1f4jzbmcjp7mdf9l9ykp1hscxdr66cl8zlcs8kbr13bm7";
+    };
+    version = "0.12.1.2";
+  };
+
   vinyl = overrideSrc (markUnbroken super.vinyl)
     rec {
       src = pkgs.fetchzip {
diff --git a/third_party/nix/src/libexpr/symbol-table.hh b/third_party/nix/src/libexpr/symbol-table.hh
index 3542f0ead..c25996588 100644
--- a/third_party/nix/src/libexpr/symbol-table.hh
+++ b/third_party/nix/src/libexpr/symbol-table.hh
@@ -19,7 +19,7 @@ class Symbol {
 
   bool operator<(const Symbol& s2) const { return *s < *s2.s; }
 
-  operator const std::string &() const { return *s; }
+  operator const std::string&() const { return *s; }
 
   bool set() const { return s; }
 
diff --git a/users/glittershark/owothia/owothia.cabal b/users/glittershark/owothia/owothia.cabal
index 63c438fb8..ef5477ea1 100644
--- a/users/glittershark/owothia/owothia.cabal
+++ b/users/glittershark/owothia/owothia.cabal
@@ -5,7 +5,7 @@ version:             0.0.1.0
 executable owothia
   main-is:             Main.hs
   build-depends:       base
-                     , relude ^>= 0.6.0.0
+                     , relude
                      , irc-client
                      , lens
                      , chatter
diff --git a/users/glittershark/system/home/modules/development.nix b/users/glittershark/system/home/modules/development.nix
index aef0c3e6f..4e34bcfb0 100644
--- a/users/glittershark/system/home/modules/development.nix
+++ b/users/glittershark/system/home/modules/development.nix
@@ -20,7 +20,8 @@ let
       sha256 = "1an4h8jjbj3r618ykjwk9brii4h9cxjqy47c4c8rivnvhimgf4wm";
     };
 
-    modSha256 = "07ci2726nrn8qjvwcypk6nf8zqmfnmvch8l28bmgj7hpfrbyb424";
+    vendorSha256 = "1a5fx6mrv30cl46kswicd8lf5i5shn1fykchvbnbhdpgxhbz6qi4";
+    deleteVendor = true;
   };
 
 in
diff --git a/users/glittershark/system/system/modules/kernel.nix b/users/glittershark/system/system/modules/kernel.nix
index 92aa6955a..bad6845ff 100644
--- a/users/glittershark/system/system/modules/kernel.nix
+++ b/users/glittershark/system/system/modules/kernel.nix
@@ -16,6 +16,7 @@ in
 {
   boot.kernelPackages = pkgs.linuxPackages.extend (self: super: {
     kernel = super.kernel.override {
+      ignoreConfigErrors = true;
       kernelPatches = super.kernel.kernelPatches ++ [{
         name = "linux-ck";
         patch = linux-ck;
diff --git a/users/glittershark/xanthous/src/Xanthous/Orphans.hs b/users/glittershark/xanthous/src/Xanthous/Orphans.hs
index 8e82c372b..39821150e 100644
--- a/users/glittershark/xanthous/src/Xanthous/Orphans.hs
+++ b/users/glittershark/xanthous/src/Xanthous/Orphans.hs
@@ -304,16 +304,9 @@ instance forall t name. (NFData t, Monoid t, NFData name)
                  => NFData (Editor t name) where
   rnf ed = getName @_ @name ed `deepseq` getEditContents ed `deepseq` ()
 
-instance NFData StdGen where
-  -- StdGen's fields are bang-patterned so this is actually correct!
-  rnf sg = sg `seq` ()
-
 deriving via (ReadShowJSON StdGen) instance ToJSON StdGen
 deriving via (ReadShowJSON StdGen) instance FromJSON StdGen
 
-instance Function StdGen where
-  function = functionShow
-
 --------------------------------------------------------------------------------
 
 instance CoArbitrary a => CoArbitrary (NonNull a) where
diff --git a/users/tazjin/nixos/frog/default.nix b/users/tazjin/nixos/frog/default.nix
index 22993c929..e9381bb07 100644
--- a/users/tazjin/nixos/frog/default.nix
+++ b/users/tazjin/nixos/frog/default.nix
@@ -51,7 +51,6 @@ in depot.lib.fix(self: {
   hardware = {
     cpu.amd.updateMicrocode = true;
     enableRedistributableFirmware = true;
-    u2f.enable = true;
     opengl = {
       enable = true;
       driSupport = true;