diff --git a/nix/haskell-packages.nix b/nix/haskell-packages.nix
index 654e0e0..0b17be9 100644
--- a/nix/haskell-packages.nix
+++ b/nix/haskell-packages.nix
@@ -22,11 +22,6 @@ pkgsNew: pkgsOld:
                 ( pkgsNew.haskell.lib.appendPatches haskellPackagesPrev.aeson
                     [ ./patches/aeson-2.1.2.1.patch ] );
 
-            # With nixpkgs-23.11 and ghc981, atomic-write wants hspec for testing,
-            # which causes problems.
-            atomic-write =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.atomic-write;
-
             # With nixpkgs-23.11 and ghc981, base-compat-batteries wants hspec for testing,
             # which causes problems.
             base-compat-batteries =
@@ -47,11 +42,6 @@ pkgsNew: pkgsOld:
             conduit =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.conduit;
 
-            # With nixpkgs-23.11 and ghc981, constraints wants hspec for testing,
-            # which causes problems.
-            constraints =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.constraints;
-
             # With nixpkgs-23.11 and ghc981, data-diverse wants hspec for testing,
             # which causes problems.
             data-diverse =
@@ -80,10 +70,6 @@ pkgsNew: pkgsOld:
               pkgsNew.haskell.lib.dontCheck
                 (pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.generic-deriving);
 
-            # With nixpkgs-23.11 and ghc981, half thinks that deepseq is out of bounds.
-            half =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.half;
-
             # With nixpkgs-23.11 and ghc981, hourglass does not support the version
             # of the time package that is provided, but that matters only to tests.
             hourglass =
@@ -104,10 +90,6 @@ pkgsNew: pkgsOld:
             infer-license =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.infer-license;
 
-            # With nixpkgs-23.11 and our overrides, insert-ordered-containers thinks that lens is out of bounds.
-            insert-ordered-containers =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.insert-ordered-containers;
-
             # With nixpkgs-23.11 and ghc981, invariant indirectly depends on hspec for testing,
             # which causes problems. Also, it generic-deriving thinks that
             # th-abstraction is out of bounds.
@@ -120,33 +102,6 @@ pkgsNew: pkgsOld:
             iproute =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.iproute;
 
-            # With nixpkgs-23.11 and ghc962, generics-sop-0.5.1.4 thinks that th-abstraction is out of bounds.
-            generics-sop =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.generics-sop;
-
-            # At a guess the test failures are some environmental issue,
-            # like being unable to contact "download.fpcomplete.com" due
-            # to the Nix build environment.
-            http-download =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.http-download;
-
-            # With nixpkgs-23.11 and ghc902, large-generics thinks that primitive is out of bounds.
-            large-generics =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.large-generics;
-
-            # With nixpkgs-23.11 and ghc902, large-records thinks that primitive is out of bounds.
-            large-records =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.large-records;
-
-            # With nixpkgs-23.11 and ghc981 (or perhaps our customized dependencies),
-            # the tests in lifted-base fail.
-            lifted-base =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.lifted-base;
-
-            # With nixpkgs-23.11 and our overrides, microlens-th thinks that th-abstraction is out of bounds.
-            microlens-th =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.microlens-th;
-
             # With nixpkgs-23.11 and ghc981, monad-par wants test-framework for testing, which
             # wants language-haskell-extract, which does not support modern template-haskell.
             monad-par =
@@ -157,69 +112,21 @@ pkgsNew: pkgsOld:
             mono-traversable =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.mono-traversable;
 
-            # With nixpkgs-23.11 and our overrides, neat-interpolation that rebase is out of bounds.
-            neat-interpolation =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.neat-interpolation;
-
-            # Patch to enable building of pantry when using ghc902.
-            #
-            # Also disable failing tests.  At a guess the test failures are some
-            # environmental issue, like being unable to contact "hackage.haskell.org"
-            # due to the Nix build environment.
-            pantry_0_9_2 =
-              pkgsNew.haskell.lib.dontCheck
-                ( pkgsNew.haskell.lib.appendPatches haskellPackagesPrev.pantry_0_9_2
-                    [ ./patches/pantry-0.9.3.2.patch ] );
-
-            # With nixpkgs-23.11 and our overrides, rerebase that rebase is out of bounds.
-            rerebase =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.rerebase;
-
-            # With nixpkgs-23.11 and ghc981, safe-exceptions wants hspec for testing,
-            # which causes problems.
-            safe-exceptions =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.safe-exceptions;
-
             # With nixpkgs-23.11 and ghc981, streaming-commons wants hspec for testing,
             # which causes problems.
             streaming-commons =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.streaming-commons;
 
-            # With nixpkgs-23.11 and our dependency overrides, swagger2 wants hspec for testing,
-            # which causes problems. Also, we jailbreak to allow a newer version of lens.
-            swagger2 =
-              pkgsNew.haskell.lib.dontCheck
-                (pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.swagger2);
-
             # With nixpkgs-23.11 and ghc981, reflection indirectly depends on hspec for testing,
             # which causes problems.
             reflection =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.reflection;
 
-            # With nixpkgs-23.11 and ghc981, resourceat wants hspec for testing,
-            # which causes problems.
-            resourceat =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.resourceat;
-
-            # With nixpkgs-23.11 and our overrides, stack objects to a number of dependencies,
-            # at least on ghc902.
-            stack =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.stack;
-
             # With nixpkgs-23.11 and ghc981, resourcet wants hspec for testing,
             # which causes problems.
             resourcet =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.resourcet;
 
-            # At a guess the test build failures are a bytestring version issue.
-            tar-conduit =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.tar-conduit;
-
-            # With nixpkgs-23.11 and ghc981, tasty-discover wants hspec for testing,
-            # which causes problems.
-            tasty-discover =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.tasty-discover;
-
             # Suppress:
             #   warning: non-portable path to file '"dist/build/Test/autogen/cabal_macros.h"'; specified path differs in case from file name on disk [-Wnonportable-include-path]
             tasty-golden =
@@ -236,19 +143,6 @@ pkgsNew: pkgsOld:
             th-compat =
               pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.th-compat;
 
-            # With nixpkgs-23.11 and our overrides, th-expand-syns thinks that th-abstraction is out of bounds.
-            th-expand-syns =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.th-expand-syns;
-
-            # With nixpkgs-23.11 and our overrides, th-lift thinks that th-abstraction is out of bounds.
-            th-lift =
-              pkgsNew.haskell.lib.doJailbreak haskellPackagesPrev.th-lift;
-
-            # With nixpkgs-23.11 and ghc981, unix-compat wants hspec for testing,
-            # which causes problems.
-            unix-compat =
-              pkgsNew.haskell.lib.dontCheck haskellPackagesPrev.unix-compat;
-
             # With nixpkgs-23.11 and ghc981, hpack-0.36.0 wants hspec for testing,
             # which causes problems.
             unix-time =
diff --git a/nix/packages/cborg.nix b/nix/packages/cborg.nix
deleted file mode 100644
index 10e1caa..0000000
--- a/nix/packages/cborg.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ mkDerivation, aeson, array, base, base-orphans, base16-bytestring
-, base64-bytestring, bytestring, containers, deepseq, ghc-bignum
-, ghc-prim, half, lib, primitive, QuickCheck, random, scientific
-, tasty, tasty-hunit, tasty-quickcheck, text, vector
-}:
-mkDerivation {
-  pname = "cborg";
-  version = "0.2.10.0";
-  sha256 = "17fe070c38fc498cab49bcb9d6215b7747d53bedf96502e9bcce9cad73b9c797";
-  libraryHaskellDepends = [
-    array base bytestring containers deepseq ghc-bignum ghc-prim half
-    primitive text
-  ];
-  testHaskellDepends = [
-    aeson array base base-orphans base16-bytestring base64-bytestring
-    bytestring deepseq half primitive QuickCheck random scientific
-    tasty tasty-hunit tasty-quickcheck text vector
-  ];
-  description = "Concise Binary Object Representation (CBOR)";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/crypton.nix b/nix/packages/crypton.nix
deleted file mode 100644
index 58c86bd..0000000
--- a/nix/packages/crypton.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ mkDerivation, base, basement, bytestring, deepseq, gauge
-, ghc-prim, integer-gmp, lib, memory, random, tasty, tasty-hunit
-, tasty-kat, tasty-quickcheck
-}:
-mkDerivation {
-  pname = "crypton";
-  version = "0.34";
-  sha256 = "4444846924ca55615fce104913a5a68675a180cfeadc350ab2b124fba1bc1ed6";
-  libraryHaskellDepends = [
-    base basement bytestring deepseq ghc-prim integer-gmp memory
-  ];
-  testHaskellDepends = [
-    base bytestring memory tasty tasty-hunit tasty-kat tasty-quickcheck
-  ];
-  benchmarkHaskellDepends = [
-    base bytestring deepseq gauge memory random
-  ];
-  homepage = "https://github.com/kazu-yamamoto/crypton";
-  description = "Cryptography Primitives sink";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/data-diverse.nix b/nix/packages/data-diverse.nix
deleted file mode 100644
index 52c09ac..0000000
--- a/nix/packages/data-diverse.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ mkDerivation, base, containers, criterion, deepseq, ghc-prim
-, hashable, hspec, lib, tagged
-}:
-mkDerivation {
-  pname = "data-diverse";
-  version = "4.7.1.0";
-  sha256 = "98722c2a85d8a6c2a8fec04820459f32111edb7b20058303d88af3b5ea4f4d80";
-  libraryHaskellDepends = [
-    base containers deepseq ghc-prim hashable tagged
-  ];
-  testHaskellDepends = [ base hspec tagged ];
-  benchmarkHaskellDepends = [ base criterion ];
-  homepage = "https://github.com/louispan/data-diverse#readme";
-  description = "Extensible records and polymorphic variants";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/generics-sop.nix b/nix/packages/generics-sop.nix
deleted file mode 100644
index d4661d6..0000000
--- a/nix/packages/generics-sop.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ mkDerivation, base, criterion, deepseq, ghc-prim, lib, sop-core
-, template-haskell, th-abstraction
-}:
-mkDerivation {
-  pname = "generics-sop";
-  version = "0.5.1.4";
-  sha256 = "616a1c2176097469f9514e76d979fffdbc12d569f44fd01deb14377c7888797e";
-  libraryHaskellDepends = [
-    base ghc-prim sop-core template-haskell th-abstraction
-  ];
-  testHaskellDepends = [ base ];
-  benchmarkHaskellDepends = [
-    base criterion deepseq template-haskell
-  ];
-  description = "Generic Programming using True Sums of Products";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/hedgehog.nix b/nix/packages/hedgehog.nix
deleted file mode 100644
index 1c93cf2..0000000
--- a/nix/packages/hedgehog.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{ mkDerivation, ansi-terminal, async, barbies, base, bytestring
-, concurrent-output, containers, deepseq, directory, erf
-, exceptions, lib, lifted-async, mmorph, monad-control, mtl
-, pretty-show, primitive, random, resourcet, safe-exceptions, stm
-, template-haskell, text, time, transformers, transformers-base
-, wl-pprint-annotated
-}:
-mkDerivation {
-  pname = "hedgehog";
-  version = "1.4";
-  sha256 = "f54afb31552e0f809030becad349cbfe19a65753a778771dc7314b2a6c41e6eb";
-  revision = "5";
-  editedCabalFile = "1majbvnqywyqfzm7qm7bhwmfzi3jamiz7d5ql4yvzsix8wg4rbag";
-  libraryHaskellDepends = [
-    ansi-terminal async barbies base bytestring concurrent-output
-    containers deepseq directory erf exceptions lifted-async mmorph
-    monad-control mtl pretty-show primitive random resourcet
-    safe-exceptions stm template-haskell text time transformers
-    transformers-base wl-pprint-annotated
-  ];
-  testHaskellDepends = [
-    base containers mmorph mtl pretty-show text transformers
-  ];
-  homepage = "https://hedgehog.qa";
-  description = "Release with confidence";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/insert-ordered-containers.nix b/nix/packages/insert-ordered-containers.nix
deleted file mode 100644
index 74e4bf3..0000000
--- a/nix/packages/insert-ordered-containers.nix
+++ /dev/null
@@ -1,23 +0,0 @@
-{ mkDerivation, aeson, base, base-compat, deepseq, hashable
-, indexed-traversable, lens, lib, optics-core, optics-extra
-, QuickCheck, semigroupoids, tasty, tasty-quickcheck, text
-, transformers, unordered-containers
-}:
-mkDerivation {
-  pname = "insert-ordered-containers";
-  version = "0.2.5.3";
-  sha256 = "f04f6e59795d8e362d15422a62d7c7c48312c2d97d2bc4372002a8a9b9a2436c";
-  revision = "1";
-  editedCabalFile = "12fkswr70fw2av11yy45v189r6cb8fcg0l1r7mayvwha3gls0j3n";
-  libraryHaskellDepends = [
-    aeson base deepseq hashable indexed-traversable lens optics-core
-    optics-extra semigroupoids text transformers unordered-containers
-  ];
-  testHaskellDepends = [
-    aeson base base-compat hashable lens QuickCheck semigroupoids tasty
-    tasty-quickcheck text unordered-containers
-  ];
-  homepage = "https://github.com/phadej/insert-ordered-containers#readme";
-  description = "Associative containers retaining insertion order for traversals";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/large-generics.nix b/nix/packages/large-generics.nix
deleted file mode 100644
index e1b6ff1..0000000
--- a/nix/packages/large-generics.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ mkDerivation, aeson, base, deepseq, generic-deriving
-, generics-sop, lib, microlens, mtl, primitive, QuickCheck
-, sop-core, tasty, tasty-hunit, tasty-quickcheck
-}:
-mkDerivation {
-  pname = "large-generics";
-  version = "0.2.1";
-  sha256 = "3f50991fa9504d5269a4db89548e25c5d969511951ba5adbd60e00125490632b";
-  revision = "1";
-  editedCabalFile = "0j2dmwf0ccggs25npzrrvz6zpachdbywn2crdlyl1dim3m6psrrh";
-  libraryHaskellDepends = [
-    aeson base deepseq generics-sop primitive sop-core
-  ];
-  testHaskellDepends = [
-    aeson base generic-deriving generics-sop microlens mtl QuickCheck
-    sop-core tasty tasty-hunit tasty-quickcheck
-  ];
-  description = "Generic programming API for large-records and large-anon";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/large-records.nix b/nix/packages/large-records.nix
deleted file mode 100644
index a44ae7e..0000000
--- a/nix/packages/large-records.nix
+++ /dev/null
@@ -1,24 +0,0 @@
-{ mkDerivation, base, containers, generic-deriving, ghc
-, large-generics, lib, mtl, newtype, primitive
-, record-dot-preprocessor, record-hasfield, syb, tasty, tasty-hunit
-, template-haskell, transformers
-}:
-mkDerivation {
-  pname = "large-records";
-  version = "0.4";
-  sha256 = "de51d5f473ca9e57b818221e9bf776e6f68ca90e5cbca1171dc14ce690a7093c";
-  revision = "1";
-  editedCabalFile = "0wcw9rnp2mkchq2xccsyiqqncxq09lj0nyk661a8xpggflsjbhwb";
-  libraryHaskellDepends = [
-    base containers ghc large-generics mtl primitive
-    record-dot-preprocessor record-hasfield syb template-haskell
-    transformers
-  ];
-  testHaskellDepends = [
-    base generic-deriving large-generics mtl newtype
-    record-dot-preprocessor record-hasfield tasty tasty-hunit
-    template-haskell transformers
-  ];
-  description = "Efficient compilation for large records, linear in the size of the record";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/megaparsec.nix b/nix/packages/megaparsec.nix
deleted file mode 100644
index b27423f..0000000
--- a/nix/packages/megaparsec.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ mkDerivation, base, bytestring, case-insensitive, containers
-, criterion, deepseq, lib, mtl, parser-combinators, scientific
-, text, transformers, weigh
-}:
-mkDerivation {
-  pname = "megaparsec";
-  version = "9.2.1";
-  sha256 = "6b278397baa4ae66d613330465c919e909ced077ec308b18827b43cf6715e9ff";
-  revision = "1";
-  editedCabalFile = "04ykwffsscwybjdzq225b3dir1r38xabz2q8aypd7x148dinyxfk";
-  libraryHaskellDepends = [
-    base bytestring case-insensitive containers deepseq mtl
-    parser-combinators scientific text transformers
-  ];
-  benchmarkHaskellDepends = [
-    base bytestring containers criterion deepseq text weigh
-  ];
-  homepage = "https://github.com/mrkkrp/megaparsec";
-  description = "Monadic parser combinators";
-  license = lib.licenses.bsd2;
-}
diff --git a/nix/packages/microlens-th.nix b/nix/packages/microlens-th.nix
deleted file mode 100644
index fcfc0a8..0000000
--- a/nix/packages/microlens-th.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ mkDerivation, base, containers, lib, microlens, tagged
-, template-haskell, th-abstraction, transformers
-}:
-mkDerivation {
-  pname = "microlens-th";
-  version = "0.4.3.15";
-  sha256 = "0fceb3271297ad29a2bfa3e62953debbb44dba513c439a363acf625f954e45c9";
-  libraryHaskellDepends = [
-    base containers microlens template-haskell th-abstraction
-    transformers
-  ];
-  testHaskellDepends = [ base microlens tagged ];
-  homepage = "http://github.com/stevenfontanella/microlens";
-  description = "Automatic generation of record lenses for microlens";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/optics-extra.nix b/nix/packages/optics-extra.nix
deleted file mode 100644
index 2b5cb58..0000000
--- a/nix/packages/optics-extra.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{ mkDerivation, array, base, bytestring, containers, hashable
-, indexed-profunctors, indexed-traversable-instances, lib, mtl
-, optics-core, text, transformers, unordered-containers, vector
-}:
-mkDerivation {
-  pname = "optics-extra";
-  version = "0.4.2.1";
-  sha256 = "7e23a7a325e3448354614d3d958279c9ac2fdd0831ceee2808830e7a962fca41";
-  revision = "2";
-  editedCabalFile = "0w7am7pvwg4mx0nrksxgr2rvnk99nhqfpj80ig21m9xbpxsh22x4";
-  libraryHaskellDepends = [
-    array base bytestring containers hashable indexed-profunctors
-    indexed-traversable-instances mtl optics-core text transformers
-    unordered-containers vector
-  ];
-  description = "Extra utilities and instances for optics-core";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/optics-th.nix b/nix/packages/optics-th.nix
deleted file mode 100644
index 52dacdf..0000000
--- a/nix/packages/optics-th.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ mkDerivation, base, containers, lib, mtl, optics-core, tagged
-, template-haskell, th-abstraction, transformers
-}:
-mkDerivation {
-  pname = "optics-th";
-  version = "0.4.1";
-  sha256 = "d73857b79dcd8f7c7e70fa4727f134145b62902e8d3e448f8b25c38a9da4fd17";
-  revision = "7";
-  editedCabalFile = "1zlx9xs8dpr3xbxsbi7pgrqkl6avs4ss2bdq8f3p2dxibr8xi4bz";
-  libraryHaskellDepends = [
-    base containers mtl optics-core template-haskell th-abstraction
-    transformers
-  ];
-  testHaskellDepends = [ base optics-core tagged ];
-  description = "Optics construction using TemplateHaskell";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/optparse-generic.nix b/nix/packages/optparse-generic.nix
deleted file mode 100644
index f267297..0000000
--- a/nix/packages/optparse-generic.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ mkDerivation, base, bytestring, filepath, lib, Only
-, optparse-applicative, text, time, transformers
-, transformers-compat, void
-}:
-mkDerivation {
-  pname = "optparse-generic";
-  version = "1.5.2";
-  sha256 = "c7b451f32d34124aab838fadaab4cf2e271e558ddc13a702458b6c790a2e8a35";
-  revision = "1";
-  editedCabalFile = "190nlp7dh878232ia2nsl75q6bzr62szl1vcyinz528lmdbnbpdc";
-  isLibrary = true;
-  isExecutable = true;
-  libraryHaskellDepends = [
-    base bytestring filepath Only optparse-applicative text time
-    transformers transformers-compat void
-  ];
-  executableHaskellDepends = [ base ];
-  description = "Auto-generate a command-line parser for your datatype";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/rebase.nix b/nix/packages/rebase.nix
deleted file mode 100644
index d9f37ad..0000000
--- a/nix/packages/rebase.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ mkDerivation, base, bifunctors, bytestring, comonad, containers
-, contravariant, deepseq, dlist, either, groups, hashable
-, invariant, lib, mtl, profunctors, scientific, selective
-, semigroupoids, stm, text, time, time-compat, transformers
-, unordered-containers, uuid-types, vector, vector-instances, void
-}:
-mkDerivation {
-  pname = "rebase";
-  version = "1.20.2";
-  sha256 = "001297a891f30c51fa7f95d97fbb6e47c8dd4a7f13ddb371d5b5780fca7bbb92";
-  libraryHaskellDepends = [
-    base bifunctors bytestring comonad containers contravariant deepseq
-    dlist either groups hashable invariant mtl profunctors scientific
-    selective semigroupoids stm text time time-compat transformers
-    unordered-containers uuid-types vector vector-instances void
-  ];
-  homepage = "https://github.com/nikita-volkov/rebase";
-  description = "A more progressive alternative to the \"base\" package";
-  license = lib.licenses.mit;
-}
diff --git a/nix/packages/record-dot-preprocessor.nix b/nix/packages/record-dot-preprocessor.nix
deleted file mode 100644
index 7ccdc57..0000000
--- a/nix/packages/record-dot-preprocessor.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ mkDerivation, base, extra, filepath, ghc, lib, record-hasfield
-, uniplate
-}:
-mkDerivation {
-  pname = "record-dot-preprocessor";
-  version = "0.2.17";
-  sha256 = "c614e29522951a518b3257cfebb990aecdf76c4440315247e4652573121ddf4d";
-  isLibrary = true;
-  isExecutable = true;
-  libraryHaskellDepends = [ base extra ghc uniplate ];
-  executableHaskellDepends = [ base extra ];
-  testHaskellDepends = [ base extra filepath record-hasfield ];
-  homepage = "https://github.com/ndmitchell/record-dot-preprocessor#readme";
-  description = "Preprocessor to allow record.field syntax";
-  license = lib.licenses.bsd3;
-  mainProgram = "record-dot-preprocessor";
-}
diff --git a/nix/packages/serialise.nix b/nix/packages/serialise.nix
deleted file mode 100644
index 530d2a5..0000000
--- a/nix/packages/serialise.nix
+++ /dev/null
@@ -1,31 +0,0 @@
-{ mkDerivation, aeson, array, base, binary, bytestring, cborg
-, cereal, cereal-vector, containers, criterion, deepseq, directory
-, fail, filepath, ghc-prim, half, hashable, lib, pretty, primitive
-, QuickCheck, quickcheck-instances, semigroups, store, strict, tar
-, tasty, tasty-hunit, tasty-quickcheck, text, these, time
-, unordered-containers, vector, zlib
-}:
-mkDerivation {
-  pname = "serialise";
-  version = "0.2.6.1";
-  sha256 = "63949799ffd10675ef70ea701c1eb63e618629b3b2f7b25f07c5a966e24e77f4";
-  revision = "2";
-  editedCabalFile = "1y21m10vx4k75x0im5448pl5mhl772hz1hfk47ryb3whz1l6d9vf";
-  libraryHaskellDepends = [
-    array base bytestring cborg containers ghc-prim half hashable
-    primitive strict text these time unordered-containers vector
-  ];
-  testHaskellDepends = [
-    base bytestring cborg containers directory filepath primitive
-    QuickCheck quickcheck-instances tasty tasty-hunit tasty-quickcheck
-    text time unordered-containers vector
-  ];
-  benchmarkHaskellDepends = [
-    aeson array base binary bytestring cborg cereal cereal-vector
-    containers criterion deepseq directory fail filepath ghc-prim half
-    pretty semigroups store tar text time vector zlib
-  ];
-  homepage = "https://github.com/well-typed/cborg";
-  description = "A binary serialisation library for Haskell values";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/singleton-bool.nix b/nix/packages/singleton-bool.nix
deleted file mode 100644
index ab0cdb8..0000000
--- a/nix/packages/singleton-bool.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{ mkDerivation, base, boring, dec, deepseq, lib, some }:
-mkDerivation {
-  pname = "singleton-bool";
-  version = "0.1.7";
-  sha256 = "1c2d196386c3697e884fcc8bef530506045a4860a5f669cc8416358b473bb29b";
-  revision = "1";
-  editedCabalFile = "1aqdd1bzccj8fb2fy1la9gqxvgaa2prba4wig0bnrr5vz13f487c";
-  libraryHaskellDepends = [ base boring dec deepseq some ];
-  homepage = "https://github.com/phadej/singleton-bool#readme";
-  description = "Type level booleans";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/some.nix b/nix/packages/some.nix
deleted file mode 100644
index df9fdda..0000000
--- a/nix/packages/some.nix
+++ /dev/null
@@ -1,11 +0,0 @@
-{ mkDerivation, base, base-orphans, deepseq, lib }:
-mkDerivation {
-  pname = "some";
-  version = "1.0.6";
-  sha256 = "f7a606ad5df4a07459986364f7d739eb653495fbbe1d7158582fb29a4584bfb9";
-  libraryHaskellDepends = [ base base-orphans deepseq ];
-  testHaskellDepends = [ base ];
-  homepage = "https://github.com/haskellari/some";
-  description = "Existential type: Some";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/swagger2.nix b/nix/packages/swagger2.nix
deleted file mode 100644
index 44c0e22..0000000
--- a/nix/packages/swagger2.nix
+++ /dev/null
@@ -1,31 +0,0 @@
-{ mkDerivation, aeson, aeson-pretty, base, base-compat-batteries
-, bytestring, Cabal, cabal-doctest, containers, cookie, doctest
-, generics-sop, Glob, hashable, hspec, hspec-discover, http-media
-, HUnit, insert-ordered-containers, lens, lib, mtl, network
-, optics-core, optics-th, QuickCheck, quickcheck-instances
-, scientific, template-haskell, text, time, transformers
-, unordered-containers, utf8-string, uuid-types, vector
-}:
-mkDerivation {
-  pname = "swagger2";
-  version = "2.8.8";
-  sha256 = "efbfda9ea97276ecfbcb73d79e56cc56efc05af2b35bb7444fceb497e7eb79f3";
-  setupHaskellDepends = [ base Cabal cabal-doctest ];
-  libraryHaskellDepends = [
-    aeson aeson-pretty base base-compat-batteries bytestring containers
-    cookie generics-sop hashable http-media insert-ordered-containers
-    lens mtl network optics-core optics-th QuickCheck scientific
-    template-haskell text time transformers unordered-containers
-    uuid-types vector
-  ];
-  testHaskellDepends = [
-    aeson base base-compat-batteries bytestring containers doctest Glob
-    hashable hspec HUnit insert-ordered-containers lens mtl QuickCheck
-    quickcheck-instances template-haskell text time
-    unordered-containers utf8-string vector
-  ];
-  testToolDepends = [ hspec-discover ];
-  homepage = "https://github.com/GetShopTV/swagger2";
-  description = "Swagger 2.0 data model";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/tasty-hedgehog.nix b/nix/packages/tasty-hedgehog.nix
deleted file mode 100644
index ecf8f66..0000000
--- a/nix/packages/tasty-hedgehog.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ mkDerivation, base, hedgehog, lib, tagged, tasty
-, tasty-expected-failure
-}:
-mkDerivation {
-  pname = "tasty-hedgehog";
-  version = "1.4.0.2";
-  sha256 = "453484d732712525a9c74a07db5f18b5f80f867a98958e67031d8d0bfe007152";
-  revision = "3";
-  editedCabalFile = "1ij1h7kdbg4bd93fl9991b39xn1rkawshsh3hgbz3j2inmnljx2w";
-  libraryHaskellDepends = [ base hedgehog tagged tasty ];
-  testHaskellDepends = [
-    base hedgehog tasty tasty-expected-failure
-  ];
-  homepage = "https://github.com/qfpl/tasty-hedgehog";
-  description = "Integration for tasty and hedgehog";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/tasty-inspection-testing.nix b/nix/packages/tasty-inspection-testing.nix
deleted file mode 100644
index 2a24a1f..0000000
--- a/nix/packages/tasty-inspection-testing.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ mkDerivation, base, ghc, inspection-testing, lib, tasty
-, template-haskell
-}:
-mkDerivation {
-  pname = "tasty-inspection-testing";
-  version = "0.2.1";
-  sha256 = "5eb175659e7e5c0a4143b1453a067938b94e0926cab04822e4b3e1ba2ced8272";
-  libraryHaskellDepends = [
-    base ghc inspection-testing tasty template-haskell
-  ];
-  homepage = "https://github.com/Bodigrim/tasty-inspection-testing";
-  description = "Inspection testing support for tasty";
-  license = lib.licenses.mit;
-}
diff --git a/nix/packages/th-compat.nix b/nix/packages/th-compat.nix
deleted file mode 100644
index 62a6ef9..0000000
--- a/nix/packages/th-compat.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ mkDerivation, base, base-compat, directory, filepath, hspec
-, hspec-discover, lib, mtl, template-haskell
-}:
-mkDerivation {
-  pname = "th-compat";
-  version = "0.1.5";
-  sha256 = "81f55fafc7afad7763c09cb8b7b4165ca3765edcf70ffa42c7393043a1382a1e";
-  revision = "2";
-  editedCabalFile = "0bhx6ahf89v7pm3s05b98rm2gbhi4yg8knnn5wchdkfg7jx5k6hj";
-  libraryHaskellDepends = [
-    base directory filepath template-haskell
-  ];
-  testHaskellDepends = [
-    base base-compat hspec mtl template-haskell
-  ];
-  testToolDepends = [ hspec-discover ];
-  homepage = "https://github.com/haskell-compat/th-compat";
-  description = "Backward- (and forward-)compatible Quote and Code types";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/turtle.nix b/nix/packages/turtle.nix
deleted file mode 100644
index 9767a2d..0000000
--- a/nix/packages/turtle.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{ mkDerivation, ansi-wl-pprint, async, base, bytestring, clock
-, containers, directory, doctest, exceptions, filepath, foldl
-, hostname, lib, managed, optional-args, optparse-applicative
-, process, stm, streaming-commons, tasty, tasty-bench, tasty-hunit
-, temporary, text, time, transformers, unix, unix-compat
-}:
-mkDerivation {
-  pname = "turtle";
-  version = "1.6.2";
-  sha256 = "1a0166b11566e956bcec6f37cfcfc4d0647d4540479545d4858d2ff8c43a5b2d";
-  revision = "2";
-  editedCabalFile = "14jnb2vyq0nx4cp4c97xflzg7z9xw1avg2d27c1d1cnqg28pd4an";
-  libraryHaskellDepends = [
-    ansi-wl-pprint async base bytestring clock containers directory
-    exceptions filepath foldl hostname managed optional-args
-    optparse-applicative process stm streaming-commons temporary text
-    time transformers unix unix-compat
-  ];
-  testHaskellDepends = [
-    base doctest filepath tasty tasty-hunit temporary
-  ];
-  benchmarkHaskellDepends = [ base tasty-bench text ];
-  description = "Shell programming, Haskell-style";
-  license = lib.licenses.bsd3;
-}
diff --git a/nix/packages/word-compat.nix b/nix/packages/word-compat.nix
deleted file mode 100644
index da64f55..0000000
--- a/nix/packages/word-compat.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{ mkDerivation, base, ghc-prim, lib }:
-mkDerivation {
-  pname = "word-compat";
-  version = "0.0.6";
-  sha256 = "305c2a9f9aab68cd5a8c9babaa9bc845d296ec5697b7e4ac4a2b368243fb278a";
-  libraryHaskellDepends = [ base ghc-prim ];
-  testHaskellDepends = [ base ];
-  description = "Compatibility shim for the Int/Word internal change in GHC 9.2";
-  license = lib.licenses.bsd3;
-}