diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 55934862c94..aed4a2d9403 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -1515,4 +1515,8 @@ self: super: {
     };
   };
 
+  # hasn‘t bumped upper bounds
+  # upstream: https://github.com/obsidiansystems/which/pull/6
+  which = doJailbreak super.which;
+
 } // import ./configuration-tensorflow.nix {inherit pkgs haskellLib;} self super
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
index 2cbe100fa40..a30e4d93e6a 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
@@ -2733,7 +2733,6 @@ broken-packages:
   - aeson-diff-generic
   - aeson-filthy
   - aeson-flowtyped
-  - aeson-gadt-th
   - aeson-injector
   - aeson-iproute
   - aeson-native
@@ -7801,7 +7800,6 @@ broken-packages:
   - neural
   - neural-network-blashs
   - neural-network-hmatrix
-  - neuron
   - newhope
   - newports
   - newsletter
@@ -8895,7 +8893,6 @@ broken-packages:
   - rhine
   - rhine-gloss
   - rhythm-game-tutorial
-  - rib
   - ribbit
   - RichConditional
   - ridley
@@ -10608,7 +10605,6 @@ broken-packages:
   - wheb-mongo
   - wheb-redis
   - wheb-strapped
-  - which
   - while-lang-parser
   - whim
   - whiskers
diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index e05f82bf04d..6d0c93e85a5 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -730,4 +730,24 @@ self: super: builtins.intersectAttrs super {
 
   # Tests access homeless-shelter.
   hie-bios = dontCheck super.hie-bios;
+
+  # Compiling the readme throws errors and has no purpose in nixpkgs
+  aeson-gadt-th =
+    disableCabalFlag (doJailbreak (super.aeson-gadt-th)) "build-readme";
+
+  neuron = overrideCabal (super.neuron) (drv: {
+    # neuron expects the neuron-search script to be in PATH at built-time.
+    buildTools = [ pkgs.makeWrapper ];
+    preConfigure = ''
+      mkdir -p $out/bin
+      cp src-bash/neuron-search $out/bin/neuron-search
+      chmod +x $out/bin/neuron-search
+      wrapProgram $out/bin/neuron-search --prefix 'PATH' ':' ${
+        with pkgs;
+        lib.makeBinPath [ fzf ripgrep gawk bat findutils envsubst ]
+      }
+      PATH=$PATH:$out/bin
+    '';
+  });
+
 }