diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index dc8f1e64d6..5549333dd2 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -102,5 +102,5 @@ jobs:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
         if: steps.changed-files.outputs.any_changed == 'true'
-      - run: nix-shell -I nixpkgs=./nix -p nixpkgs-fmt --run "make lint-nix"
+      - run: nix-shell -I nixpkgs=./nix -p nixfmt-rfc-style --run "make lint-nix"
         if: steps.changed-files.outputs.any_changed == 'true'
diff --git a/Makefile b/Makefile
index 33cbf460b5..aa76077427 100644
--- a/Makefile
+++ b/Makefile
@@ -131,7 +131,7 @@ lint-py:
           --format="::error file=%(path)s,line=%(row)d,col=%(col)d::%(path)s:%(row)d:%(col)d: %(code)s %(text)s" \
 
 lint-nix:
-	find . -name "*.nix" ! -path './integration_tests/contracts/*' ! -path "./contracts/*" | xargs nixpkgs-fmt --check
+	find . -name "*.nix" ! -path './integration_tests/contracts/*' ! -path "./contracts/*" | xargs nixfmt -c
 
 .PHONY: lint lint-fix lint-py
 
diff --git a/default.nix b/default.nix
index e6e031cfa8..0693389f3d 100644
--- a/default.nix
+++ b/default.nix
@@ -1,19 +1,28 @@
-{ lib
-, stdenv
-, buildGoApplication
-, nix-gitignore
-, buildPackages
-, coverage ? false # https://tip.golang.org/doc/go1.20#cover
-, rocksdb
-, network ? "mainnet"  # mainnet|testnet
-, rev ? "dirty"
-, static ? stdenv.hostPlatform.isStatic
-, nativeByteOrder ? true # nativeByteOrder mode will panic on big endian machines
+{
+  lib,
+  stdenv,
+  buildGoApplication,
+  nix-gitignore,
+  buildPackages,
+  coverage ? false, # https://tip.golang.org/doc/go1.20#cover
+  rocksdb,
+  network ? "mainnet", # mainnet|testnet
+  rev ? "dirty",
+  static ? stdenv.hostPlatform.isStatic,
+  nativeByteOrder ? true, # nativeByteOrder mode will panic on big endian machines
 }:
 let
   version = "v1.4.0";
   pname = "cronosd";
-  tags = [ "ledger" "netgo" network "rocksdb" "grocksdb_no_link" "pebbledb" "objstore" ] ++ lib.optionals nativeByteOrder [ "nativebyteorder" ];
+  tags = [
+    "ledger"
+    "netgo"
+    network
+    "rocksdb"
+    "grocksdb_no_link"
+    "pebbledb"
+    "objstore"
+  ] ++ lib.optionals nativeByteOrder [ "nativebyteorder" ];
   ldflags = lib.concatStringsSep "\n" ([
     "-X github.com/cosmos/cosmos-sdk/version.Name=cronos"
     "-X github.com/cosmos/cosmos-sdk/version.AppName=${pname}"
@@ -24,29 +33,40 @@ let
   buildInputs = [ rocksdb ];
 in
 buildGoApplication rec {
-  inherit pname version buildInputs tags ldflags;
-  src = (nix-gitignore.gitignoreSourcePure [
-    "/*" # ignore all, then add whitelists
-    "!/x/"
-    "!/app/"
-    "!/cmd/"
-    "!/client/"
-    "!/versiondb/"
-    "!/memiavl/"
-    "!/store/"
-    "!go.mod"
-    "!go.sum"
-    "!gomod2nix.toml"
-  ] ./.);
+  inherit
+    pname
+    version
+    buildInputs
+    tags
+    ldflags
+    ;
+  src = (
+    nix-gitignore.gitignoreSourcePure [
+      "/*" # ignore all, then add whitelists
+      "!/x/"
+      "!/app/"
+      "!/cmd/"
+      "!/client/"
+      "!/versiondb/"
+      "!/memiavl/"
+      "!/store/"
+      "!go.mod"
+      "!go.sum"
+      "!gomod2nix.toml"
+    ] ./.
+  );
   modules = ./gomod2nix.toml;
   pwd = src; # needed to support replace
   subPackages = [ "cmd/cronosd" ];
   buildFlags = lib.optionalString coverage "-cover";
   CGO_ENABLED = "1";
   CGO_LDFLAGS = lib.optionalString (rocksdb != null) (
-    if static then "-lrocksdb -pthread -lstdc++ -ldl -lzstd -lsnappy -llz4 -lbz2 -lz"
-    else if stdenv.hostPlatform.isWindows then "-lrocksdb-shared"
-    else "-lrocksdb -pthread -lstdc++ -ldl"
+    if static then
+      "-lrocksdb -pthread -lstdc++ -ldl -lzstd -lsnappy -llz4 -lbz2 -lz"
+    else if stdenv.hostPlatform.isWindows then
+      "-lrocksdb-shared"
+    else
+      "-lrocksdb -pthread -lstdc++ -ldl"
   );
 
   postFixup = lib.optionalString (stdenv.isDarwin && rocksdb != null) ''
diff --git a/flake.nix b/flake.nix
index 3eef421c63..c58d275d91 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,7 +18,15 @@
     };
   };
 
-  outputs = { self, nixpkgs, nix-bundle-exe, gomod2nix, flake-utils, poetry2nix }:
+  outputs =
+    {
+      self,
+      nixpkgs,
+      nix-bundle-exe,
+      gomod2nix,
+      flake-utils,
+      poetry2nix,
+    }:
     let
       rev = self.shortRev or "dirty";
       mkApp = drv: {
@@ -26,52 +34,49 @@
         program = "${drv}/bin/${drv.meta.mainProgram}";
       };
     in
-    (flake-utils.lib.eachDefaultSystem
-      (system:
-        let
-          pkgs = import nixpkgs {
-            inherit system;
-            overlays = self.overlays.default;
-            config = { };
+    (flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = self.overlays.default;
+          config = { };
+        };
+      in
+      rec {
+        packages = pkgs.cronos-matrix // {
+          inherit (pkgs) rocksdb testground-image;
+        };
+        apps = {
+          cronosd = mkApp packages.cronosd;
+          cronosd-testnet = mkApp packages.cronosd-testnet;
+          stateless-testcase = {
+            type = "app";
+            program = "${pkgs.benchmark-testcase}/bin/stateless-testcase";
           };
-        in
-        rec {
-          packages = pkgs.cronos-matrix // {
-            inherit (pkgs) rocksdb testground-image;
+        };
+        defaultPackage = packages.cronosd;
+        defaultApp = apps.cronosd;
+        devShells = rec {
+          default = pkgs.mkShell {
+            buildInputs = [
+              defaultPackage.go
+              pkgs.gomod2nix
+              pkgs.nixfmt-rfc-style
+            ];
           };
-          apps = {
-            cronosd = mkApp packages.cronosd;
-            cronosd-testnet = mkApp packages.cronosd-testnet;
-            stateless-testcase = {
-              type = "app";
-              program = "${pkgs.benchmark-testcase}/bin/stateless-testcase";
-            };
+          rocksdb = pkgs.mkShell {
+            buildInputs = default.buildInputs ++ [
+              pkgs.rocksdb
+              pkgs.rocksdb.tools
+            ];
           };
-          defaultPackage = packages.cronosd;
-          defaultApp = apps.cronosd;
-          devShells = rec {
-            default = pkgs.mkShell {
-              buildInputs = [
-                defaultPackage.go
-                pkgs.gomod2nix
-              ];
-            };
-            rocksdb = pkgs.mkShell {
-              buildInputs = default.buildInputs ++ [
-                pkgs.rocksdb
-                pkgs.rocksdb.tools
-              ];
-            };
-            full = pkgs.mkShell {
-              buildInputs = rocksdb.buildInputs ++ [
-                pkgs.test-env
-              ];
-            };
-          };
-          legacyPackages = pkgs;
-        }
-      )
-    ) // {
+          full = pkgs.mkShell { buildInputs = rocksdb.buildInputs ++ [ pkgs.test-env ]; };
+        };
+        legacyPackages = pkgs;
+      }
+    ))
+    // {
       overlays.default = [
         (import ./nix/build_overlay.nix)
         poetry2nix.overlays.default
diff --git a/integration_tests/configs/broken-cronosd.nix b/integration_tests/configs/broken-cronosd.nix
index 9242c004ad..508761270d 100644
--- a/integration_tests/configs/broken-cronosd.nix
+++ b/integration_tests/configs/broken-cronosd.nix
@@ -1,8 +1,9 @@
-{ pkgs ? import ../../nix { } }:
-let cronosd = (pkgs.callPackage ../../. { });
+{
+  pkgs ? import ../../nix { },
+}:
+let
+  cronosd = (pkgs.callPackage ../../. { });
 in
 cronosd.overrideAttrs (oldAttrs: {
-  patches = oldAttrs.patches or [ ] ++ [
-    ./broken-cronosd.patch
-  ];
+  patches = oldAttrs.patches or [ ] ++ [ ./broken-cronosd.patch ];
 })
diff --git a/integration_tests/configs/upgrade-test-package.nix b/integration_tests/configs/upgrade-test-package.nix
index 41b8d98d6f..e648394266 100644
--- a/integration_tests/configs/upgrade-test-package.nix
+++ b/integration_tests/configs/upgrade-test-package.nix
@@ -1,26 +1,47 @@
 let
   pkgs = import ../../nix { };
-  fetchFlake = repo: rev: (pkgs.flake-compat {
-    src = {
-      outPath = builtins.fetchTarball "https://github.com/${repo}/archive/${rev}.tar.gz";
-      inherit rev;
-      shortRev = builtins.substring 0 7 rev;
-    };
-  }).defaultNix;
+  fetchFlake =
+    repo: rev:
+    (pkgs.flake-compat {
+      src = {
+        outPath = builtins.fetchTarball "https://github.com/${repo}/archive/${rev}.tar.gz";
+        inherit rev;
+        shortRev = builtins.substring 0 7 rev;
+      };
+    }).defaultNix;
   # v1.0.15
-  releasedGenesis = (fetchFlake "crypto-org-chain/cronos" "1f5e2618362303d91f621b47cbc1115cf4fa0195").default;
+  releasedGenesis =
+    (fetchFlake "crypto-org-chain/cronos" "1f5e2618362303d91f621b47cbc1115cf4fa0195").default;
   # release/v1.1.x
-  released1_1 = (fetchFlake "crypto-org-chain/cronos" "69a80154b6b24fca15f3562e2c4b312ee1092220").default;
+  released1_1 =
+    (fetchFlake "crypto-org-chain/cronos" "69a80154b6b24fca15f3562e2c4b312ee1092220").default;
   # release/v1.2.x
-  released1_2 = (fetchFlake "crypto-org-chain/cronos" "1aea999eef67a0a01b22422bad94b36e45b9759a").default;
+  released1_2 =
+    (fetchFlake "crypto-org-chain/cronos" "1aea999eef67a0a01b22422bad94b36e45b9759a").default;
   # release/v1.3.x
-  released1_3 = (fetchFlake "crypto-org-chain/cronos" "e1d819c862b30f0ce978baf2addb12516568639e").default;
+  released1_3 =
+    (fetchFlake "crypto-org-chain/cronos" "e1d819c862b30f0ce978baf2addb12516568639e").default;
   current = pkgs.callPackage ../../. { };
 in
 pkgs.linkFarm "upgrade-test-package" [
-  { name = "genesis"; path = releasedGenesis; }
-  { name = "v1.1.0"; path = released1_1; }
-  { name = "v1.2"; path = released1_2; }
-  { name = "v1.3"; path = released1_3; }
-  { name = "v1.4"; path = current; }
+  {
+    name = "genesis";
+    path = releasedGenesis;
+  }
+  {
+    name = "v1.1.0";
+    path = released1_1;
+  }
+  {
+    name = "v1.2";
+    path = released1_2;
+  }
+  {
+    name = "v1.3";
+    path = released1_3;
+  }
+  {
+    name = "v1.4";
+    path = current;
+  }
 ]
diff --git a/integration_tests/shell.nix b/integration_tests/shell.nix
index fe275138a5..1d4c56d4f8 100644
--- a/integration_tests/shell.nix
+++ b/integration_tests/shell.nix
@@ -1,4 +1,7 @@
-{ system ? builtins.currentSystem, pkgs ? import ../nix { inherit system; } }:
+{
+  system ? builtins.currentSystem,
+  pkgs ? import ../nix { inherit system; },
+}:
 let
   renameExe = pkgs.callPackage ../nix/rename-exe.nix { };
 in
@@ -18,7 +21,7 @@ pkgs.mkShell {
     (renameExe pkgs.solc-static-versions.solc_0_6_8 "solc-0.6.8" "solc06")
     (renameExe pkgs.solc-static-versions.solc_0_8_21 "solc-0.8.21" "solc08")
     pkgs.test-env
-    pkgs.nixpkgs-fmt
+    pkgs.nixfmt-rfc-style
     pkgs.rocksdb
     pkgs.chain-maind
     pkgs.hermes
diff --git a/nix/bundle-win-exe.nix b/nix/bundle-win-exe.nix
index 44bcf323d7..5817b15823 100644
--- a/nix/bundle-win-exe.nix
+++ b/nix/bundle-win-exe.nix
@@ -1,35 +1,37 @@
-{ runCommand
-, windows
-, stdenv
-, rocksdb
-, bzip2
-, lz4
-, snappy
-, zstd
-, zlib
-, cronosd
+{
+  runCommand,
+  windows,
+  stdenv,
+  rocksdb,
+  bzip2,
+  lz4,
+  snappy,
+  zstd,
+  zlib,
+  cronosd,
 }:
 runCommand "tarball-${cronosd.name}"
-{
-  # manually enumerate the runtime dependencies of cronosd on mingwW64
-  deps = [
-    "${rocksdb}/bin/librocksdb-shared.dll"
-    "${snappy}/bin/libsnappy.dll"
-    "${lz4.out}/lib/liblz4.dll"
-    "${bzip2.bin}/bin/libbz2-1.dll"
-    "${zlib}/bin/zlib1.dll"
-    "${zstd.bin}/bin/libzstd.dll"
-    "${windows.mingw_w64_pthreads}/bin/libwinpthread-1.dll"
-    "${windows.mcfgthreads}/bin/libmcfgthread-1.dll"
-    "${stdenv.cc.cc.lib}/x86_64-w64-mingw32/lib/libgcc_s_seh-1.dll"
-    "${stdenv.cc.cc.lib}/x86_64-w64-mingw32/lib/libstdc++-6.dll"
-  ];
-} ''
-  mkdir -p $out
-  for so in $deps
-  do
-    cp $so $out/
-  done
+  {
+    # manually enumerate the runtime dependencies of cronosd on mingwW64
+    deps = [
+      "${rocksdb}/bin/librocksdb-shared.dll"
+      "${snappy}/bin/libsnappy.dll"
+      "${lz4.out}/lib/liblz4.dll"
+      "${bzip2.bin}/bin/libbz2-1.dll"
+      "${zlib}/bin/zlib1.dll"
+      "${zstd.bin}/bin/libzstd.dll"
+      "${windows.mingw_w64_pthreads}/bin/libwinpthread-1.dll"
+      "${windows.mcfgthreads}/bin/libmcfgthread-1.dll"
+      "${stdenv.cc.cc.lib}/x86_64-w64-mingw32/lib/libgcc_s_seh-1.dll"
+      "${stdenv.cc.cc.lib}/x86_64-w64-mingw32/lib/libstdc++-6.dll"
+    ];
+  }
+  ''
+    mkdir -p $out
+    for so in $deps
+    do
+      cp $so $out/
+    done
 
-  cp ${cronosd}/bin/${cronosd.meta.mainProgram} $out/
-''
+    cp ${cronosd}/bin/${cronosd.meta.mainProgram} $out/
+  ''
diff --git a/nix/cosmovisor.nix b/nix/cosmovisor.nix
index 16ca179e65..598cd908ad 100644
--- a/nix/cosmovisor.nix
+++ b/nix/cosmovisor.nix
@@ -1,6 +1,4 @@
-{ buildGoModule
-, fetchFromGitHub
-}:
+{ buildGoModule, fetchFromGitHub }:
 
 let
   version = "1.5.0";
diff --git a/nix/cronos-matrix.nix b/nix/cronos-matrix.nix
index e6016121bb..65f45e1261 100644
--- a/nix/cronos-matrix.nix
+++ b/nix/cronos-matrix.nix
@@ -1,25 +1,35 @@
-{ lib
-, stdenv
-, callPackage
-, buildPackages
-, runCommand
-, bundle-exe
-, rev ? "dirty"
+{
+  lib,
+  stdenv,
+  callPackage,
+  buildPackages,
+  runCommand,
+  bundle-exe,
+  rev ? "dirty",
 }:
 let
   # make-tarball don't follow symbolic links to avoid duplicate file, the bundle should have no external references.
   # reset the ownership and permissions to make the extract result more normal.
-  make-tarball = drv: runCommand "tarball-${drv.name}"
-    {
-      nativeBuildInputs = with buildPackages; [ gnutar gzip ];
-    } ''
-    tar cfv - -C "${drv}" \
-      --owner=0 --group=0 --mode=u+rw,uga+r --hard-dereference . \
-      | gzip -9 > $out
-  '';
+  make-tarball =
+    drv:
+    runCommand "tarball-${drv.name}"
+      {
+        nativeBuildInputs = with buildPackages; [
+          gnutar
+          gzip
+        ];
+      }
+      ''
+        tar cfv - -C "${drv}" \
+          --owner=0 --group=0 --mode=u+rw,uga+r --hard-dereference . \
+          | gzip -9 > $out
+      '';
   bundle-win-exe = drv: callPackage ./bundle-win-exe.nix { cronosd = drv; };
   matrix = lib.cartesianProductOfSets {
-    network = [ "mainnet" "testnet" ];
+    network = [
+      "mainnet"
+      "testnet"
+    ];
     pkgtype = [
       "nix" # normal nix package
       "bundle" # relocatable bundled package
@@ -27,30 +37,26 @@ let
     ];
   };
 in
-builtins.listToAttrs (builtins.map
-  ({ network, pkgtype }: {
-    name = builtins.concatStringsSep "-" (
-      [ "cronosd" ] ++
-      lib.optional (network != "mainnet") network ++
-      lib.optional (pkgtype != "nix") pkgtype
-    );
-    value =
-      let
-        cronosd = callPackage ../. {
-          inherit rev network;
-        };
-        bundle =
-          if stdenv.hostPlatform.isWindows then
-            bundle-win-exe cronosd
-          else
-            bundle-exe cronosd;
-      in
-      if pkgtype == "bundle" then
-        bundle
-      else if pkgtype == "tarball" then
-        make-tarball bundle
-      else
-        cronosd;
-  })
-  matrix
+builtins.listToAttrs (
+  builtins.map (
+    { network, pkgtype }:
+    {
+      name = builtins.concatStringsSep "-" (
+        [ "cronosd" ]
+        ++ lib.optional (network != "mainnet") network
+        ++ lib.optional (pkgtype != "nix") pkgtype
+      );
+      value =
+        let
+          cronosd = callPackage ../. { inherit rev network; };
+          bundle = if stdenv.hostPlatform.isWindows then bundle-win-exe cronosd else bundle-exe cronosd;
+        in
+        if pkgtype == "bundle" then
+          bundle
+        else if pkgtype == "tarball" then
+          make-tarball bundle
+        else
+          cronosd;
+    }
+  ) matrix
 )
diff --git a/nix/dapptools-overlay.nix b/nix/dapptools-overlay.nix
index ace97cca95..1cb68e20a2 100644
--- a/nix/dapptools-overlay.nix
+++ b/nix/dapptools-overlay.nix
@@ -1,19 +1,16 @@
 { dapptools-release, dapptools-master }:
 self: super:
 let
-  dapptools = {
-    x86_64-linux =
-      (import (dapptools-release + "/release.nix") { }).dapphub.linux.stable;
-    x86_64-darwin =
-      (import (dapptools-release + "/release.nix") { }).dapphub.darwin.stable;
-  }.${self.system} or (throw
-    "Unsupported system: ${self.system}");
+  dapptools =
+    {
+      x86_64-linux = (import (dapptools-release + "/release.nix") { }).dapphub.linux.stable;
+      x86_64-darwin = (import (dapptools-release + "/release.nix") { }).dapphub.darwin.stable;
+    }
+    .${self.system} or (throw "Unsupported system: ${self.system}");
   dapptools-patched = self.srcOnly {
     name = "dapptools-patched";
     src = dapptools-master;
-    patches = [
-      ./dapptools.patch
-    ];
+    patches = [ ./dapptools.patch ];
   };
 in
 {
diff --git a/nix/default.nix b/nix/default.nix
index 1f9ffa4451..79ce5b8c8a 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -1,8 +1,15 @@
-{ sources ? import ./sources.nix, system ? builtins.currentSystem, ... }:
+{
+  sources ? import ./sources.nix,
+  system ? builtins.currentSystem,
+  ...
+}:
 import sources.nixpkgs {
   overlays = [
     (import ./build_overlay.nix)
-    (import ./dapptools-overlay.nix { dapptools-release = sources.dapptools; dapptools-master = sources.dapptools-master; })
+    (import ./dapptools-overlay.nix {
+      dapptools-release = sources.dapptools;
+      dapptools-master = sources.dapptools-master;
+    })
     (_: pkgs: {
       go = pkgs.go_1_22;
       go-ethereum = pkgs.callPackage ./go-ethereum.nix {
@@ -15,15 +22,20 @@ import sources.nixpkgs {
     }) # update to a version that supports eip-1559
     (import "${sources.poetry2nix}/overlay.nix")
     (import "${sources.gomod2nix}/overlay.nix")
-    (pkgs: _:
+    (
+      pkgs: _:
       import ./scripts.nix {
         inherit pkgs;
         config = {
           cronos-config = ../scripts/cronos-devnet.yaml;
           geth-genesis = ../scripts/geth-genesis.json;
-          dotenv = builtins.path { name = "dotenv"; path = ../scripts/.env; };
+          dotenv = builtins.path {
+            name = "dotenv";
+            path = ../scripts/.env;
+          };
         };
-      })
+      }
+    )
     (_: pkgs: {
       gorc = pkgs.rustPlatform.buildRustPackage rec {
         name = "gorc";
@@ -31,21 +43,27 @@ import sources.nixpkgs {
         sourceRoot = "gravity-bridge-src/orchestrator";
         cargoSha256 = "sha256-FQ43PFGbagIi+KZ6KUtjF7OClIkCqKd4pGzHaYr2Q+A=";
         cargoBuildFlags = "-p ${name} --features ethermint";
-        buildInputs = pkgs.lib.optionals pkgs.stdenv.isDarwin
-          (with pkgs.darwin.apple_sdk.frameworks; [ CoreFoundation Security ]);
+        buildInputs = pkgs.lib.optionals pkgs.stdenv.isDarwin (
+          with pkgs.darwin.apple_sdk.frameworks;
+          [
+            CoreFoundation
+            Security
+          ]
+        );
         doCheck = false;
         OPENSSL_NO_VENDOR = "1";
         OPENSSL_DIR = pkgs.symlinkJoin {
           name = "openssl";
-          paths = with pkgs.openssl; [ out dev ];
+          paths = with pkgs.openssl; [
+            out
+            dev
+          ];
         };
       };
       hermes = pkgs.callPackage ./hermes.nix { src = sources.ibc-rs; };
     })
     (_: pkgs: { test-env = pkgs.callPackage ./testenv.nix { }; })
-    (_: pkgs: {
-      cosmovisor = pkgs.callPackage ./cosmovisor.nix { };
-    })
+    (_: pkgs: { cosmovisor = pkgs.callPackage ./cosmovisor.nix { }; })
     (_: pkgs: {
       rly = pkgs.buildGo121Module rec {
         name = "rly";
diff --git a/nix/gen-binding-shell.nix b/nix/gen-binding-shell.nix
index 2ac5711a47..8409c332ff 100644
--- a/nix/gen-binding-shell.nix
+++ b/nix/gen-binding-shell.nix
@@ -1,4 +1,7 @@
-{ system ? builtins.currentSystem, pkgs ? import ./. { inherit system; } }:
+{
+  system ? builtins.currentSystem,
+  pkgs ? import ./. { inherit system; },
+}:
 let
   renameExe = pkgs.callPackage ./rename-exe.nix { };
 in
diff --git a/nix/go-ethereum.nix b/nix/go-ethereum.nix
index b8651acaf1..8e5862b57b 100644
--- a/nix/go-ethereum.nix
+++ b/nix/go-ethereum.nix
@@ -1,4 +1,11 @@
-{ lib, stdenv, buildGoModule, fetchFromGitHub, libobjc, IOKit }:
+{
+  lib,
+  stdenv,
+  buildGoModule,
+  fetchFromGitHub,
+  libobjc,
+  IOKit,
+}:
 
 let
   # A list of binaries to put into separate outputs
@@ -27,7 +34,10 @@ buildGoModule rec {
 
   # Move binaries to separate outputs and symlink them back to $out
   postInstall = lib.concatStringsSep "\n" (
-    builtins.map (bin: "mkdir -p \$${bin}/bin && mv $out/bin/${bin} \$${bin}/bin/ && ln -s \$${bin}/bin/${bin} $out/bin/") bins
+    builtins.map (
+      bin:
+      "mkdir -p \$${bin}/bin && mv $out/bin/${bin} \$${bin}/bin/ && ln -s \$${bin}/bin/${bin} $out/bin/"
+    ) bins
   );
 
   subPackages = [
@@ -47,13 +57,22 @@ buildGoModule rec {
   ];
 
   # Fix for usb-related segmentation faults on darwin
-  propagatedBuildInputs =
-    lib.optionals stdenv.isDarwin [ libobjc IOKit ];
+  propagatedBuildInputs = lib.optionals stdenv.isDarwin [
+    libobjc
+    IOKit
+  ];
 
   meta = with lib; {
     homepage = "https://geth.ethereum.org/";
     description = "Official golang implementation of the Ethereum protocol";
-    license = with licenses; [ lgpl3Plus gpl3Plus ];
-    maintainers = with maintainers; [ adisbladis lionello RaghavSood ];
+    license = with licenses; [
+      lgpl3Plus
+      gpl3Plus
+    ];
+    maintainers = with maintainers; [
+      adisbladis
+      lionello
+      RaghavSood
+    ];
   };
 }
diff --git a/nix/golangci-lint.nix b/nix/golangci-lint.nix
index 9845f267dc..9f94ac696d 100644
--- a/nix/golangci-lint.nix
+++ b/nix/golangci-lint.nix
@@ -1,4 +1,9 @@
-{ buildGo123Module, fetchFromGitHub, lib, installShellFiles }:
+{
+  buildGo123Module,
+  fetchFromGitHub,
+  lib,
+  installShellFiles,
+}:
 
 buildGo123Module rec {
   pname = "golangci-lint";
@@ -38,6 +43,9 @@ buildGo123Module rec {
     changelog = "https://github.com/golangci/golangci-lint/blob/v${version}/CHANGELOG.md";
     mainProgram = "golangci-lint";
     license = licenses.gpl3Plus;
-    maintainers = with maintainers; [ SuperSandro2000 mic92 ];
+    maintainers = with maintainers; [
+      SuperSandro2000
+      mic92
+    ];
   };
 }
diff --git a/nix/hermes.nix b/nix/hermes.nix
index 04a7352d7d..22895543b5 100644
--- a/nix/hermes.nix
+++ b/nix/hermes.nix
@@ -1,11 +1,12 @@
-{ src
-, lib
-, stdenv
-, darwin
-, rustPlatform
-, symlinkJoin
-, openssl
-, pkg-config
+{
+  src,
+  lib,
+  stdenv,
+  darwin,
+  rustPlatform,
+  symlinkJoin,
+  openssl,
+  pkg-config,
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -30,6 +31,9 @@ rustPlatform.buildRustPackage rec {
   OPENSSL_NO_VENDOR = "1";
   OPENSSL_DIR = symlinkJoin {
     name = "openssl";
-    paths = with openssl; [ out dev ];
+    paths = with openssl; [
+      out
+      dev
+    ];
   };
 }
diff --git a/nix/rocksdb.nix b/nix/rocksdb.nix
index 0c33ca248e..32e1e0720e 100644
--- a/nix/rocksdb.nix
+++ b/nix/rocksdb.nix
@@ -1,21 +1,22 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, fetchpatch
-, cmake
-, ninja
-, bzip2
-, lz4
-, snappy
-, zlib
-, zstd
-, windows
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  fetchpatch,
+  cmake,
+  ninja,
+  bzip2,
+  lz4,
+  snappy,
+  zlib,
+  zstd,
+  windows,
   # only enable jemalloc for non-windows platforms
   # see: https://github.com/NixOS/nixpkgs/issues/216479
-, enableJemalloc ? !stdenv.hostPlatform.isWindows && !stdenv.hostPlatform.isStatic
-, jemalloc
-, enableShared ? !stdenv.hostPlatform.isStatic
-, sse42Support ? stdenv.hostPlatform.sse4_2Support
+  enableJemalloc ? !stdenv.hostPlatform.isWindows && !stdenv.hostPlatform.isStatic,
+  jemalloc,
+  enableShared ? !stdenv.hostPlatform.isStatic,
+  sse42Support ? stdenv.hostPlatform.sse4_2Support,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -29,11 +30,21 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-u5uuShM2SxHc9/zL4UU56IhCcR/ZQbzde0LgOYS44bM=";
   };
 
-  nativeBuildInputs = [ cmake ninja ];
+  nativeBuildInputs = [
+    cmake
+    ninja
+  ];
 
-  propagatedBuildInputs = [ bzip2 lz4 snappy zlib zstd ];
+  propagatedBuildInputs = [
+    bzip2
+    lz4
+    snappy
+    zlib
+    zstd
+  ];
 
-  buildInputs = lib.optional enableJemalloc jemalloc
+  buildInputs =
+    lib.optional enableJemalloc jemalloc
     ++ lib.optional stdenv.hostPlatform.isMinGW windows.mingw_w64_pthreads;
 
   outputs = [
@@ -41,9 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
     "tools"
   ];
 
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isClang [
-    "-faligned-allocation"
-  ]);
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isClang [ "-faligned-allocation" ]);
 
   cmakeFlags = [
     "-DPORTABLE=1"
@@ -68,46 +77,55 @@ stdenv.mkDerivation (finalAttrs: {
   # otherwise "cc1: error: -Wformat-security ignored without -Wformat [-Werror=format-security]"
   hardeningDisable = lib.optional stdenv.hostPlatform.isWindows "format";
 
-  postPatch = lib.optionalString (lib.versionOlder finalAttrs.version "9") ''
-    # Fix gcc-13 build failures due to missing <cstdint> and
-    # <system_error> includes, fixed upstream since 9.x
-    sed -e '1i #include <cstdint>' -i options/offpeak_time_info.h
-  '' + lib.optionalString (lib.versionOlder finalAttrs.version "8") ''
-    # Fix gcc-13 build failures due to missing <cstdint> and
-    # <system_error> includes, fixed upstream since 8.x
-    sed -e '1i #include <cstdint>' -i db/compaction/compaction_iteration_stats.h
-    sed -e '1i #include <cstdint>' -i table/block_based/data_block_hash_index.h
-    sed -e '1i #include <cstdint>' -i util/string_util.h
-    sed -e '1i #include <cstdint>' -i include/rocksdb/utilities/checkpoint.h
-  '' + lib.optionalString (lib.versionOlder finalAttrs.version "7") ''
-    # Fix gcc-13 build failures due to missing <cstdint> and
-    # <system_error> includes, fixed upstream since 7.x
-    sed -e '1i #include <system_error>' -i third-party/folly/folly/synchronization/detail/ProxyLockable-inl.h
-  '' + ''
-    # fixed in https://github.com/facebook/rocksdb/pull/12309
-    sed -e 's/ZSTD_INCLUDE_DIRS/zstd_INCLUDE_DIRS/' -i cmake/modules/Findzstd.cmake
-    sed -e 's/ZSTD_INCLUDE_DIRS/zstd_INCLUDE_DIRS/' -i CMakeLists.txt
-  '';
+  postPatch =
+    lib.optionalString (lib.versionOlder finalAttrs.version "9") ''
+      # Fix gcc-13 build failures due to missing <cstdint> and
+      # <system_error> includes, fixed upstream since 9.x
+      sed -e '1i #include <cstdint>' -i options/offpeak_time_info.h
+    ''
+    + lib.optionalString (lib.versionOlder finalAttrs.version "8") ''
+      # Fix gcc-13 build failures due to missing <cstdint> and
+      # <system_error> includes, fixed upstream since 8.x
+      sed -e '1i #include <cstdint>' -i db/compaction/compaction_iteration_stats.h
+      sed -e '1i #include <cstdint>' -i table/block_based/data_block_hash_index.h
+      sed -e '1i #include <cstdint>' -i util/string_util.h
+      sed -e '1i #include <cstdint>' -i include/rocksdb/utilities/checkpoint.h
+    ''
+    + lib.optionalString (lib.versionOlder finalAttrs.version "7") ''
+      # Fix gcc-13 build failures due to missing <cstdint> and
+      # <system_error> includes, fixed upstream since 7.x
+      sed -e '1i #include <system_error>' -i third-party/folly/folly/synchronization/detail/ProxyLockable-inl.h
+    ''
+    + ''
+      # fixed in https://github.com/facebook/rocksdb/pull/12309
+      sed -e 's/ZSTD_INCLUDE_DIRS/zstd_INCLUDE_DIRS/' -i cmake/modules/Findzstd.cmake
+      sed -e 's/ZSTD_INCLUDE_DIRS/zstd_INCLUDE_DIRS/' -i CMakeLists.txt
+    '';
 
-  preInstall = ''
-    mkdir -p $tools/bin
-    cp tools/{ldb,sst_dump}${stdenv.hostPlatform.extensions.executable} $tools/bin/
-  '' + lib.optionalString stdenv.isDarwin ''
-    ls -1 $tools/bin/* | xargs -I{} ${stdenv.cc.bintools.targetPrefix}install_name_tool -change "@rpath/librocksdb.${lib.versions.major finalAttrs.version}.dylib" $out/lib/librocksdb.dylib {}
-  '' + lib.optionalString (stdenv.isLinux && enableShared) ''
-    ls -1 $tools/bin/* | xargs -I{} patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib {}
-  '';
+  preInstall =
+    ''
+      mkdir -p $tools/bin
+      cp tools/{ldb,sst_dump}${stdenv.hostPlatform.extensions.executable} $tools/bin/
+    ''
+    + lib.optionalString stdenv.isDarwin ''
+      ls -1 $tools/bin/* | xargs -I{} ${stdenv.cc.bintools.targetPrefix}install_name_tool -change "@rpath/librocksdb.${lib.versions.major finalAttrs.version}.dylib" $out/lib/librocksdb.dylib {}
+    ''
+    + lib.optionalString (stdenv.isLinux && enableShared) ''
+      ls -1 $tools/bin/* | xargs -I{} patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib {}
+    '';
 
   # Old version doesn't ship the .pc file, new version puts wrong paths in there.
-  postFixup = ''
-    if [ -f "$out"/lib/pkgconfig/rocksdb.pc ]; then
-      substituteInPlace "$out"/lib/pkgconfig/rocksdb.pc \
-        --replace '="''${prefix}//' '="/'
-    fi
-  '' + lib.optionalString stdenv.isDarwin ''
-    ${stdenv.cc.targetPrefix}install_name_tool -change "@rpath/libsnappy.1.dylib" "${snappy}/lib/libsnappy.1.dylib" $out/lib/librocksdb.dylib
-    ${stdenv.cc.targetPrefix}install_name_tool -change "@rpath/librocksdb.${lib.versions.major finalAttrs.version}.dylib" "$out/lib/librocksdb.${lib.versions.major finalAttrs.version}.dylib" $out/lib/librocksdb.dylib
-  '';
+  postFixup =
+    ''
+      if [ -f "$out"/lib/pkgconfig/rocksdb.pc ]; then
+        substituteInPlace "$out"/lib/pkgconfig/rocksdb.pc \
+          --replace '="''${prefix}//' '="/'
+      fi
+    ''
+    + lib.optionalString stdenv.isDarwin ''
+      ${stdenv.cc.targetPrefix}install_name_tool -change "@rpath/libsnappy.1.dylib" "${snappy}/lib/libsnappy.1.dylib" $out/lib/librocksdb.dylib
+      ${stdenv.cc.targetPrefix}install_name_tool -change "@rpath/librocksdb.${lib.versions.major finalAttrs.version}.dylib" "$out/lib/librocksdb.${lib.versions.major finalAttrs.version}.dylib" $out/lib/librocksdb.dylib
+    '';
 
   meta = with lib; {
     homepage = "https://rocksdb.org";
@@ -115,6 +133,9 @@ stdenv.mkDerivation (finalAttrs: {
     changelog = "https://github.com/facebook/rocksdb/raw/v${finalAttrs.version}/HISTORY.md";
     license = licenses.asl20;
     platforms = platforms.all;
-    maintainers = with maintainers; [ adev magenbluten ];
+    maintainers = with maintainers; [
+      adev
+      magenbluten
+    ];
   };
 })
diff --git a/nix/scripts.nix b/nix/scripts.nix
index 45aa631b3e..64a262acf8 100644
--- a/nix/scripts.nix
+++ b/nix/scripts.nix
@@ -1,7 +1,9 @@
-{ pkgs
-, config
-, cronos ? (import ../. { inherit pkgs; })
-}: rec {
+{
+  pkgs,
+  config,
+  cronos ? (import ../. { inherit pkgs; }),
+}:
+rec {
   start-cronos = pkgs.writeShellScriptBin "start-cronos" ''
     # rely on environment to provide cronosd
     export PATH=${pkgs.test-env}/bin:$PATH
@@ -14,6 +16,9 @@
   '';
   start-scripts = pkgs.symlinkJoin {
     name = "start-scripts";
-    paths = [ start-cronos start-geth ];
+    paths = [
+      start-cronos
+      start-geth
+    ];
   };
 }
diff --git a/nix/sources.nix b/nix/sources.nix
index 3f841046a8..c420541d76 100644
--- a/nix/sources.nix
+++ b/nix/sources.nix
@@ -6,113 +6,159 @@ let
   # The fetchers. fetch_<type> fetches specs of type <type>.
   #
 
-  fetch_file = pkgs: name: spec:
+  fetch_file =
+    pkgs: name: spec:
     let
       name' = sanitizeName name + "-src";
     in
     if spec.builtin or true then
-      builtins_fetchurl { inherit (spec) url sha256; name = name'; }
+      builtins_fetchurl {
+        inherit (spec) url sha256;
+        name = name';
+      }
     else
-      pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
+      pkgs.fetchurl {
+        inherit (spec) url sha256;
+        name = name';
+      };
 
-  fetch_tarball = pkgs: name: spec:
+  fetch_tarball =
+    pkgs: name: spec:
     let
       name' = sanitizeName name + "-src";
     in
     if spec.builtin or true then
-      builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
+      builtins_fetchTarball {
+        name = name';
+        inherit (spec) url sha256;
+      }
     else
-      pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
+      pkgs.fetchzip {
+        name = name';
+        inherit (spec) url sha256;
+      };
 
-  fetch_git = name: spec:
+  fetch_git =
+    name: spec:
     let
       ref =
-        if spec ? ref then spec.ref else
-        if spec ? branch then "refs/heads/${spec.branch}" else
-        if spec ? tag then "refs/tags/${spec.tag}" else
-        abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+        if spec ? ref then
+          spec.ref
+        else if spec ? branch then
+          "refs/heads/${spec.branch}"
+        else if spec ? tag then
+          "refs/tags/${spec.tag}"
+        else
+          abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
     in
-    builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
+    builtins.fetchGit {
+      url = spec.repo;
+      inherit (spec) rev;
+      inherit ref;
+    };
 
   fetch_local = spec: spec.path;
 
-  fetch_builtin-tarball = name: throw
-    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
-        $ niv modify ${name} -a type=tarball -a builtin=true'';
+  fetch_builtin-tarball =
+    name:
+    throw ''
+      [${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
+              $ niv modify ${name} -a type=tarball -a builtin=true'';
 
-  fetch_builtin-url = name: throw
-    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
-        $ niv modify ${name} -a type=file -a builtin=true'';
+  fetch_builtin-url =
+    name:
+    throw ''
+      [${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
+              $ niv modify ${name} -a type=file -a builtin=true'';
 
   #
   # Various helpers
   #
 
   # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
-  sanitizeName = name:
-    (
-      concatMapStrings (s: if builtins.isList s then "-" else s)
-        (
-          builtins.split "[^[:alnum:]+._?=-]+"
-            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
-        )
-    );
+  sanitizeName =
+    name:
+    (concatMapStrings (s: if builtins.isList s then "-" else s) (
+      builtins.split "[^[:alnum:]+._?=-]+" ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+    ));
 
   # The set of packages used when specs are fetched using non-builtins.
-  mkPkgs = sources: system:
+  mkPkgs =
+    sources: system:
     let
-      sourcesNixpkgs =
-        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
+      sourcesNixpkgs = import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {
+        inherit system;
+      };
       hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
       hasThisAsNixpkgsPath = <nixpkgs> == ./.;
     in
-    if builtins.hasAttr "nixpkgs" sources
-    then sourcesNixpkgs
-    else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
+    if builtins.hasAttr "nixpkgs" sources then
+      sourcesNixpkgs
+    else if hasNixpkgsPath && !hasThisAsNixpkgsPath then
       import <nixpkgs> { }
     else
-      abort
-        ''
-          Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
-          add a package called "nixpkgs" to your sources.json.
-        '';
+      abort ''
+        Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
+        add a package called "nixpkgs" to your sources.json.
+      '';
 
   # The actual fetching function.
-  fetch = pkgs: name: spec:
+  fetch =
+    pkgs: name: spec:
 
-    if ! builtins.hasAttr "type" spec then
+    if !builtins.hasAttr "type" spec then
       abort "ERROR: niv spec ${name} does not have a 'type' attribute"
-    else if spec.type == "file" then fetch_file pkgs name spec
-    else if spec.type == "tarball" then fetch_tarball pkgs name spec
-    else if spec.type == "git" then fetch_git name spec
-    else if spec.type == "local" then fetch_local spec
-    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
-    else if spec.type == "builtin-url" then fetch_builtin-url name
+    else if spec.type == "file" then
+      fetch_file pkgs name spec
+    else if spec.type == "tarball" then
+      fetch_tarball pkgs name spec
+    else if spec.type == "git" then
+      fetch_git name spec
+    else if spec.type == "local" then
+      fetch_local spec
+    else if spec.type == "builtin-tarball" then
+      fetch_builtin-tarball name
+    else if spec.type == "builtin-url" then
+      fetch_builtin-url name
     else
       abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
 
   # If the environment variable NIV_OVERRIDE_${name} is set, then use
   # the path directly as opposed to the fetched source.
-  replace = name: drv:
+  replace =
+    name: drv:
     let
       saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
       ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
     in
-    if ersatz == "" then drv else
-      # this turns the string into an actual Nix path (for both absolute and
-      # relative paths)
-    if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
+    if ersatz == "" then
+      drv
+    else
+    # this turns the string into an actual Nix path (for both absolute and
+    # relative paths)
+    if builtins.substring 0 1 ersatz == "/" then
+      /. + ersatz
+    else
+      /. + builtins.getEnv "PWD" + "/${ersatz}";
 
   # Ports of functions for older nix versions
 
   # a Nix version of mapAttrs if the built-in doesn't exist
-  mapAttrs = builtins.mapAttrs or (
-    f: set: with builtins;
-    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
-  );
+  mapAttrs =
+    builtins.mapAttrs or (
+      f: set:
+      with builtins;
+      listToAttrs (
+        map (attr: {
+          name = attr;
+          value = f attr set.${attr};
+        }) (attrNames set)
+      )
+    );
 
   # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
-  range = first: last: if first > last then [ ] else builtins.genList (n: first + n) (last - first + 1);
+  range =
+    first: last: if first > last then [ ] else builtins.genList (n: first + n) (last - first + 1);
 
   # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
   stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
@@ -126,7 +172,12 @@ let
   optionalAttrs = cond: as: if cond then as else { };
 
   # fetchTarball version that is compatible between all the versions of Nix
-  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
+  builtins_fetchTarball =
+    {
+      url,
+      name ? null,
+      sha256,
+    }@attrs:
     let
       inherit (builtins) lessThan nixVersion fetchTarball;
     in
@@ -136,7 +187,12 @@ let
       fetchTarball attrs;
 
   # fetchurl version that is compatible between all the versions of Nix
-  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
+  builtins_fetchurl =
+    {
+      url,
+      name ? null,
+      sha256,
+    }@attrs:
     let
       inherit (builtins) lessThan nixVersion fetchurl;
     in
@@ -146,26 +202,25 @@ let
       fetchurl attrs;
 
   # Create the final "sources" from the config
-  mkSources = config:
-    mapAttrs
-      (
-        name: spec:
-          if builtins.hasAttr "outPath" spec
-          then
-            abort
-              "The values in sources.json should not have an 'outPath' attribute"
-          else
-            spec // { outPath = replace name (fetch config.pkgs name spec); }
-      )
-      config.sources;
+  mkSources =
+    config:
+    mapAttrs (
+      name: spec:
+      if builtins.hasAttr "outPath" spec then
+        abort "The values in sources.json should not have an 'outPath' attribute"
+      else
+        spec // { outPath = replace name (fetch config.pkgs name spec); }
+    ) config.sources;
 
   # The "config" used by the fetchers
   mkConfig =
-    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
-    , sources ? if isNull sourcesFile then { } else builtins.fromJSON (builtins.readFile sourcesFile)
-    , system ? builtins.currentSystem
-    , pkgs ? mkPkgs sources system
-    }: rec {
+    {
+      sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null,
+      sources ? if isNull sourcesFile then { } else builtins.fromJSON (builtins.readFile sourcesFile),
+      system ? builtins.currentSystem,
+      pkgs ? mkPkgs sources system,
+    }:
+    rec {
       # The sources, i.e. the attribute set of spec name to spec
       inherit sources;
 
diff --git a/nix/testenv.nix b/nix/testenv.nix
index b73aa9ad3c..66952a071d 100644
--- a/nix/testenv.nix
+++ b/nix/testenv.nix
@@ -1,8 +1,13 @@
-{ poetry2nix, lib, python311 }:
+{
+  poetry2nix,
+  lib,
+  python311,
+}:
 poetry2nix.mkPoetryEnv {
   projectDir = ../integration_tests;
   python = python311;
-  overrides = poetry2nix.overrides.withDefaults (self: super:
+  overrides = poetry2nix.overrides.withDefaults (
+    self: super:
     let
       buildSystems = {
         pystarport = [ "poetry-core" ];
@@ -16,11 +21,11 @@ poetry2nix.mkPoetryEnv {
         eth-bloom = [ "setuptools" ];
       };
     in
-    lib.mapAttrs
-      (attr: systems: super.${attr}.overridePythonAttrs
-        (old: {
-          nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ map (a: self.${a}) systems;
-        }))
-      buildSystems
+    lib.mapAttrs (
+      attr: systems:
+      super.${attr}.overridePythonAttrs (old: {
+        nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ map (a: self.${a}) systems;
+      })
+    ) buildSystems
   );
 }
diff --git a/nix/testground-image.nix b/nix/testground-image.nix
index 629ae3ae8c..86c345a442 100644
--- a/nix/testground-image.nix
+++ b/nix/testground-image.nix
@@ -1,9 +1,12 @@
-{ dockerTools, runCommandLocal, cronos-matrix, benchmark-testcase }:
+{
+  dockerTools,
+  runCommandLocal,
+  cronos-matrix,
+  benchmark-testcase,
+}:
 let
   patched-cronosd = cronos-matrix.cronosd.overrideAttrs (oldAttrs: {
-    patches = oldAttrs.patches or [ ] ++ [
-      ./testground-cronosd.patch
-    ];
+    patches = oldAttrs.patches or [ ] ++ [ ./testground-cronosd.patch ];
   });
 in
 let
@@ -20,10 +23,17 @@ dockerTools.buildLayeredImage {
     tmpDir
   ];
   config = {
-    Expose = [ 9090 26657 26656 1317 26658 26660 26659 30000 ];
-    Cmd = [ "/bin/stateless-testcase" ];
-    Env = [
-      "PYTHONUNBUFFERED=1"
+    Expose = [
+      9090
+      26657
+      26656
+      1317
+      26658
+      26660
+      26659
+      30000
     ];
+    Cmd = [ "/bin/stateless-testcase" ];
+    Env = [ "PYTHONUNBUFFERED=1" ];
   };
 }
diff --git a/testground/benchmark/flake.nix b/testground/benchmark/flake.nix
index 234cf58638..4b84c96322 100644
--- a/testground/benchmark/flake.nix
+++ b/testground/benchmark/flake.nix
@@ -9,38 +9,43 @@
     };
   };
 
-  outputs = { self, nixpkgs, flake-utils, poetry2nix }:
-    flake-utils.lib.eachDefaultSystem
-      (system:
-        let
-          pkgs = import nixpkgs {
-            inherit system;
-            overlays = [
-              poetry2nix.overlays.default
-              (import ./overlay.nix)
-            ];
-            config = { };
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      poetry2nix,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [
+            poetry2nix.overlays.default
+            (import ./overlay.nix)
+          ];
+          config = { };
+        };
+      in
+      rec {
+        packages.default = pkgs.benchmark-testcase;
+        apps = {
+          default = {
+            type = "app";
+            program = "${pkgs.benchmark-testcase}/bin/stateless-testcase";
           };
-        in
-        rec {
-          packages.default = pkgs.benchmark-testcase;
-          apps = {
-            default = {
-              type = "app";
-              program = "${pkgs.benchmark-testcase}/bin/stateless-testcase";
-            };
-            stateless-testcase = {
-              type = "app";
-              program = "${pkgs.benchmark-testcase}/bin/stateless-testcase";
-            };
-            testnet = {
-              type = "app";
-              program = "${pkgs.benchmark-testcase}/bin/testnet";
-            };
+          stateless-testcase = {
+            type = "app";
+            program = "${pkgs.benchmark-testcase}/bin/stateless-testcase";
           };
-          devShells.default = pkgs.mkShell {
-            buildInputs = [ pkgs.benchmark-testcase-env ];
+          testnet = {
+            type = "app";
+            program = "${pkgs.benchmark-testcase}/bin/testnet";
           };
-          legacyPackages = pkgs;
-        });
+        };
+        devShells.default = pkgs.mkShell { buildInputs = [ pkgs.benchmark-testcase-env ]; };
+        legacyPackages = pkgs;
+      }
+    );
 }
diff --git a/testground/benchmark/overlay.nix b/testground/benchmark/overlay.nix
index 3360074e3b..7a9e787f0e 100644
--- a/testground/benchmark/overlay.nix
+++ b/testground/benchmark/overlay.nix
@@ -1,13 +1,18 @@
 final: _:
 let
-  overrides = { lib, poetry2nix }: poetry2nix.overrides.withDefaults
-    (self: super:
+  overrides =
+    { lib, poetry2nix }:
+    poetry2nix.overrides.withDefaults (
+      self: super:
       let
         buildSystems = {
           pystarport = [ "poetry-core" ];
           durations = [ "setuptools" ];
           multitail2 = [ "setuptools" ];
-          docker = [ "hatchling" "hatch-vcs" ];
+          docker = [
+            "hatchling"
+            "hatch-vcs"
+          ];
           pyunormalize = [ "setuptools" ];
           pytest-github-actions-annotate-failures = [ "setuptools" ];
           cprotobuf = [ "setuptools" ];
@@ -15,32 +20,48 @@ let
           flake8-isort = [ "hatchling" ];
         };
       in
-      lib.mapAttrs
-        (attr: systems: super.${attr}.overridePythonAttrs
-          (old: {
-            nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ map (a: self.${a}) systems;
-          }))
-        buildSystems
+      lib.mapAttrs (
+        attr: systems:
+        super.${attr}.overridePythonAttrs (old: {
+          nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ map (a: self.${a}) systems;
+        })
+      ) buildSystems
     );
 
-  src = nix-gitignore: nix-gitignore.gitignoreSourcePure [
-    "/*" # ignore all, then add whitelists
-    "!/benchmark/"
-    "!poetry.lock"
-    "!pyproject.toml"
-  ] ./.;
+  src =
+    nix-gitignore:
+    nix-gitignore.gitignoreSourcePure [
+      "/*" # ignore all, then add whitelists
+      "!/benchmark/"
+      "!poetry.lock"
+      "!pyproject.toml"
+    ] ./.;
 
-  benchmark = { lib, poetry2nix, python311, nix-gitignore }: poetry2nix.mkPoetryApplication {
-    projectDir = src nix-gitignore;
-    python = python311;
-    overrides = overrides { inherit lib poetry2nix; };
-  };
+  benchmark =
+    {
+      lib,
+      poetry2nix,
+      python311,
+      nix-gitignore,
+    }:
+    poetry2nix.mkPoetryApplication {
+      projectDir = src nix-gitignore;
+      python = python311;
+      overrides = overrides { inherit lib poetry2nix; };
+    };
 
-  benchmark-env = { lib, poetry2nix, python311, nix-gitignore }: poetry2nix.mkPoetryEnv {
-    projectDir = src nix-gitignore;
-    python = python311;
-    overrides = overrides { inherit lib poetry2nix; };
-  };
+  benchmark-env =
+    {
+      lib,
+      poetry2nix,
+      python311,
+      nix-gitignore,
+    }:
+    poetry2nix.mkPoetryEnv {
+      projectDir = src nix-gitignore;
+      python = python311;
+      overrides = overrides { inherit lib poetry2nix; };
+    };
 
 in
 {