diff --git a/.github/workflows/check-nix-format.yml b/.github/workflows/check-nix-format.yml
index dfc39c148577..fff18d201d43 100644
--- a/.github/workflows/check-nix-format.yml
+++ b/.github/workflows/check-nix-format.yml
@@ -40,6 +40,7 @@ jobs:
             pkgs/top-level/cuda-packages.nix
           NIX_FMT_PATHS_VSCODE_EXTS: pkgs/applications/editors/vscode/extensions
           NIX_FMT_PATHS_PHP_PACKAGES: pkgs/development/php-packages
+          NIX_FMT_PATHS_BUILD_SUPPORT_PHP: pkgs/build-support/php
         # Iterate over all environment variables beginning with NIX_FMT_PATHS_.
         run: |
           for env_var in "${!NIX_FMT_PATHS_@}"; do
diff --git a/pkgs/build-support/php/build-composer-project.nix b/pkgs/build-support/php/build-composer-project.nix
index 80c63bcde71b..5a21eda03544 100644
--- a/pkgs/build-support/php/build-composer-project.nix
+++ b/pkgs/build-support/php/build-composer-project.nix
@@ -1,7 +1,17 @@
-{ callPackage, stdenvNoCC, lib, writeTextDir, php, makeBinaryWrapper, fetchFromGitHub, fetchurl }:
+{
+  callPackage,
+  stdenvNoCC,
+  lib,
+  writeTextDir,
+  php,
+  makeBinaryWrapper,
+  fetchFromGitHub,
+  fetchurl,
+}:
 
 let
-  buildComposerProjectOverride = finalAttrs: previousAttrs:
+  buildComposerProjectOverride =
+    finalAttrs: previousAttrs:
 
     let
       phpDrv = finalAttrs.php or php;
@@ -22,49 +32,58 @@ let
         phpDrv.composerHooks.composerInstallHook
       ];
 
-      buildInputs = (previousAttrs.buildInputs or [ ]) ++ [
-        phpDrv
-      ];
+      buildInputs = (previousAttrs.buildInputs or [ ]) ++ [ phpDrv ];
 
       patches = previousAttrs.patches or [ ];
       strictDeps = previousAttrs.strictDeps or true;
 
       # Should we keep these empty phases?
-      configurePhase = previousAttrs.configurePhase or ''
-        runHook preConfigure
+      configurePhase =
+        previousAttrs.configurePhase or ''
+          runHook preConfigure
 
-        runHook postConfigure
-      '';
+          runHook postConfigure
+        '';
 
-      buildPhase = previousAttrs.buildPhase or ''
-        runHook preBuild
+      buildPhase =
+        previousAttrs.buildPhase or ''
+          runHook preBuild
 
-        runHook postBuild
-      '';
+          runHook postBuild
+        '';
 
       doCheck = previousAttrs.doCheck or true;
-      checkPhase = previousAttrs.checkPhase or ''
-        runHook preCheck
+      checkPhase =
+        previousAttrs.checkPhase or ''
+          runHook preCheck
 
-        runHook postCheck
-      '';
+          runHook postCheck
+        '';
 
-      installPhase = previousAttrs.installPhase or ''
-        runHook preInstall
+      installPhase =
+        previousAttrs.installPhase or ''
+          runHook preInstall
 
-        runHook postInstall
-      '';
+          runHook postInstall
+        '';
 
       doInstallCheck = previousAttrs.doInstallCheck or false;
-      installCheckPhase = previousAttrs.installCheckPhase or ''
-        runHook preInstallCheck
+      installCheckPhase =
+        previousAttrs.installCheckPhase or ''
+          runHook preInstallCheck
 
-        runHook postInstallCheck
-      '';
+          runHook postInstallCheck
+        '';
 
       composerRepository = phpDrv.mkComposerRepository {
         inherit composer composer-local-repo-plugin;
-        inherit (finalAttrs) patches pname src vendorHash version;
+        inherit (finalAttrs)
+          patches
+          pname
+          src
+          vendorHash
+          version
+          ;
 
         composerLock = previousAttrs.composerLock or null;
         composerNoDev = previousAttrs.composerNoDev or true;
@@ -73,9 +92,9 @@ let
         composerStrictValidation = previousAttrs.composerStrictValidation or true;
       };
 
-      COMPOSER_CACHE_DIR="/dev/null";
-      COMPOSER_DISABLE_NETWORK="1";
-      COMPOSER_MIRROR_PATH_REPOS="1";
+      COMPOSER_CACHE_DIR = "/dev/null";
+      COMPOSER_DISABLE_NETWORK = "1";
+      COMPOSER_MIRROR_PATH_REPOS = "1";
 
       meta = previousAttrs.meta or { } // {
         platforms = lib.platforms.all;
diff --git a/pkgs/build-support/php/build-composer-repository.nix b/pkgs/build-support/php/build-composer-repository.nix
index e359c0829aaf..a5b02fd95e04 100644
--- a/pkgs/build-support/php/build-composer-repository.nix
+++ b/pkgs/build-support/php/build-composer-repository.nix
@@ -1,4 +1,11 @@
-{ callPackage, stdenvNoCC, lib, writeTextDir, fetchFromGitHub, php }:
+{
+  callPackage,
+  stdenvNoCC,
+  lib,
+  writeTextDir,
+  fetchFromGitHub,
+  php,
+}:
 
 let
   mkComposerRepositoryOverride =
@@ -22,12 +29,24 @@ let
       composer-local-repo-plugin = callPackage ./pkgs/composer-local-repo-plugin.nix { };
     in
     assert (lib.assertMsg (previousAttrs ? src) "mkComposerRepository expects src argument.");
-    assert (lib.assertMsg (previousAttrs ? vendorHash) "mkComposerRepository expects vendorHash argument.");
+    assert (
+      lib.assertMsg (previousAttrs ? vendorHash) "mkComposerRepository expects vendorHash argument."
+    );
     assert (lib.assertMsg (previousAttrs ? version) "mkComposerRepository expects version argument.");
     assert (lib.assertMsg (previousAttrs ? pname) "mkComposerRepository expects pname argument.");
-    assert (lib.assertMsg (previousAttrs ? composerNoDev) "mkComposerRepository expects composerNoDev argument.");
-    assert (lib.assertMsg (previousAttrs ? composerNoPlugins) "mkComposerRepository expects composerNoPlugins argument.");
-    assert (lib.assertMsg (previousAttrs ? composerNoScripts) "mkComposerRepository expects composerNoScripts argument.");
+    assert (
+      lib.assertMsg (previousAttrs ? composerNoDev) "mkComposerRepository expects composerNoDev argument."
+    );
+    assert (
+      lib.assertMsg (
+        previousAttrs ? composerNoPlugins
+      ) "mkComposerRepository expects composerNoPlugins argument."
+    );
+    assert (
+      lib.assertMsg (
+        previousAttrs ? composerNoScripts
+      ) "mkComposerRepository expects composerNoScripts argument."
+    );
     {
       composerNoDev = previousAttrs.composerNoDev or true;
       composerNoPlugins = previousAttrs.composerNoPlugins or true;
@@ -51,37 +70,42 @@ let
       strictDeps = previousAttrs.strictDeps or true;
 
       # Should we keep these empty phases?
-      configurePhase = previousAttrs.configurePhase or ''
-        runHook preConfigure
+      configurePhase =
+        previousAttrs.configurePhase or ''
+          runHook preConfigure
 
-        runHook postConfigure
-      '';
+          runHook postConfigure
+        '';
 
-      buildPhase = previousAttrs.buildPhase or ''
-        runHook preBuild
+      buildPhase =
+        previousAttrs.buildPhase or ''
+          runHook preBuild
 
-        runHook postBuild
-      '';
+          runHook postBuild
+        '';
 
       doCheck = previousAttrs.doCheck or true;
-      checkPhase = previousAttrs.checkPhase or ''
-        runHook preCheck
+      checkPhase =
+        previousAttrs.checkPhase or ''
+          runHook preCheck
 
-        runHook postCheck
-      '';
+          runHook postCheck
+        '';
 
-      installPhase = previousAttrs.installPhase or ''
-        runHook preInstall
+      installPhase =
+        previousAttrs.installPhase or ''
+          runHook preInstall
 
-        runHook postInstall
-      '';
+          runHook postInstall
+        '';
 
       doInstallCheck = previousAttrs.doInstallCheck or false;
-      installCheckPhase = previousAttrs.installCheckPhase or ''
-        runHook preInstallCheck
+      installCheckPhase =
+        previousAttrs.installCheckPhase or ''
+          runHook preInstallCheck
 
-        runHook postInstallCheck
-      '';
+          runHook postInstallCheck
+        '';
 
       COMPOSER_CACHE_DIR = "/dev/null";
       COMPOSER_MIRROR_PATH_REPOS = "1";
@@ -89,7 +113,8 @@ let
       COMPOSER_DISABLE_NETWORK = "0";
 
       outputHashMode = "recursive";
-      outputHashAlgo = if (finalAttrs ? vendorHash && finalAttrs.vendorHash != "") then null else "sha256";
+      outputHashAlgo =
+        if (finalAttrs ? vendorHash && finalAttrs.vendorHash != "") then null else "sha256";
       outputHash = finalAttrs.vendorHash or "";
     };
 in
diff --git a/pkgs/build-support/php/build-pecl.nix b/pkgs/build-support/php/build-pecl.nix
index 6f38a668f3a3..16913a85c63d 100644
--- a/pkgs/build-support/php/build-pecl.nix
+++ b/pkgs/build-support/php/build-pecl.nix
@@ -1,45 +1,69 @@
-{ stdenv, lib, php, autoreconfHook, fetchurl, re2c, nix-update-script }:
+{
+  stdenv,
+  lib,
+  php,
+  autoreconfHook,
+  fetchurl,
+  re2c,
+  nix-update-script,
+}:
 
-{ pname
-, version
-, internalDeps ? [ ]
-, peclDeps ? [ ]
-, buildInputs ? [ ]
-, nativeBuildInputs ? [ ]
-, postPhpize ? ""
-, makeFlags ? [ ]
-, src ? fetchurl ({
-    url = "https://pecl.php.net/get/${pname}-${version}.tgz";
-  } // lib.filterAttrs (attrName: _: lib.elem attrName [ "sha256" "hash" ]) args)
-, passthru ? { }
-, ...
+{
+  pname,
+  version,
+  internalDeps ? [ ],
+  peclDeps ? [ ],
+  buildInputs ? [ ],
+  nativeBuildInputs ? [ ],
+  postPhpize ? "",
+  makeFlags ? [ ],
+  src ? fetchurl (
+    {
+      url = "https://pecl.php.net/get/${pname}-${version}.tgz";
+    }
+    // lib.filterAttrs (
+      attrName: _:
+      lib.elem attrName [
+        "sha256"
+        "hash"
+      ]
+    ) args
+  ),
+  passthru ? { },
+  ...
 }@args:
 
-stdenv.mkDerivation (args // {
-  name = "php-${pname}-${version}";
-  extensionName = pname;
+stdenv.mkDerivation (
+  args
+  // {
+    name = "php-${pname}-${version}";
+    extensionName = pname;
 
-  inherit src;
+    inherit src;
 
-  nativeBuildInputs = [ autoreconfHook re2c ] ++ nativeBuildInputs;
-  buildInputs = [ php ] ++ peclDeps ++ buildInputs;
+    nativeBuildInputs = [
+      autoreconfHook
+      re2c
+    ] ++ nativeBuildInputs;
+    buildInputs = [ php ] ++ peclDeps ++ buildInputs;
 
-  makeFlags = [ "EXTENSION_DIR=$(out)/lib/php/extensions" ] ++ makeFlags;
+    makeFlags = [ "EXTENSION_DIR=$(out)/lib/php/extensions" ] ++ makeFlags;
 
-  autoreconfPhase = ''
-    phpize
-    ${postPhpize}
-    ${lib.concatMapStringsSep "\n"
-      (dep: "mkdir -p ext; ln -s ${dep.dev}/include ext/${dep.extensionName}")
-      internalDeps}
-  '';
-  checkPhase = "NO_INTERACTON=yes make test";
+    autoreconfPhase = ''
+      phpize
+      ${postPhpize}
+      ${lib.concatMapStringsSep "\n" (
+        dep: "mkdir -p ext; ln -s ${dep.dev}/include ext/${dep.extensionName}"
+      ) internalDeps}
+    '';
+    checkPhase = "NO_INTERACTON=yes make test";
 
-  passthru = passthru // {
-    # Thes flags were introduced for `nix-update` so that it can update
-    # PHP extensions correctly.
-    # See the corresponding PR: https://github.com/Mic92/nix-update/pull/123
-    isPhpExtension = true;
-    updateScript = nix-update-script {};
-  };
-})
+    passthru = passthru // {
+      # Thes flags were introduced for `nix-update` so that it can update
+      # PHP extensions correctly.
+      # See the corresponding PR: https://github.com/Mic92/nix-update/pull/123
+      isPhpExtension = true;
+      updateScript = nix-update-script { };
+    };
+  }
+)
diff --git a/pkgs/build-support/php/hooks/default.nix b/pkgs/build-support/php/hooks/default.nix
index ca96b1056db9..1bdc4d3e9280 100644
--- a/pkgs/build-support/php/hooks/default.nix
+++ b/pkgs/build-support/php/hooks/default.nix
@@ -1,11 +1,12 @@
-{ lib
-, makeSetupHook
-, diffutils
-, jq
-, writeShellApplication
-, moreutils
-, cacert
-, buildPackages
+{
+  lib,
+  makeSetupHook,
+  diffutils,
+  jq,
+  writeShellApplication,
+  moreutils,
+  cacert,
+  buildPackages,
 }:
 
 let
@@ -16,24 +17,30 @@ let
   };
 in
 {
-  composerRepositoryHook = makeSetupHook
-    {
-      name = "composer-repository-hook.sh";
-      propagatedBuildInputs = [ jq moreutils cacert ];
-      substitutions = {
-        phpScriptUtils = lib.getExe php-script-utils;
-      };
-    } ./composer-repository-hook.sh;
+  composerRepositoryHook = makeSetupHook {
+    name = "composer-repository-hook.sh";
+    propagatedBuildInputs = [
+      jq
+      moreutils
+      cacert
+    ];
+    substitutions = {
+      phpScriptUtils = lib.getExe php-script-utils;
+    };
+  } ./composer-repository-hook.sh;
 
-  composerInstallHook = makeSetupHook
-    {
-      name = "composer-install-hook.sh";
-      propagatedBuildInputs = [ jq moreutils cacert ];
-      substitutions = {
-        # Specify the stdenv's `diff` by abspath to ensure that the user's build
-        # inputs do not cause us to find the wrong `diff`.
-        cmp = "${lib.getBin buildPackages.diffutils}/bin/cmp";
-        phpScriptUtils = lib.getExe php-script-utils;
-      };
-    } ./composer-install-hook.sh;
+  composerInstallHook = makeSetupHook {
+    name = "composer-install-hook.sh";
+    propagatedBuildInputs = [
+      jq
+      moreutils
+      cacert
+    ];
+    substitutions = {
+      # Specify the stdenv's `diff` by abspath to ensure that the user's build
+      # inputs do not cause us to find the wrong `diff`.
+      cmp = "${lib.getBin buildPackages.diffutils}/bin/cmp";
+      phpScriptUtils = lib.getExe php-script-utils;
+    };
+  } ./composer-install-hook.sh;
 }
diff --git a/pkgs/build-support/php/pkgs/composer-local-repo-plugin.nix b/pkgs/build-support/php/pkgs/composer-local-repo-plugin.nix
index bfdc3d4f98d1..5351a3e51f4d 100644
--- a/pkgs/build-support/php/pkgs/composer-local-repo-plugin.nix
+++ b/pkgs/build-support/php/pkgs/composer-local-repo-plugin.nix
@@ -1,9 +1,14 @@
-{ php, callPackage, stdenvNoCC, lib, fetchFromGitHub, makeBinaryWrapper }:
+{
+  php,
+  callPackage,
+  stdenvNoCC,
+  lib,
+  fetchFromGitHub,
+  makeBinaryWrapper,
+}:
 
 let
-  composer = callPackage ./composer-phar.nix {
-    inherit (php.packages.composer) version pharHash;
-  };
+  composer = callPackage ./composer-phar.nix { inherit (php.packages.composer) version pharHash; };
 
   composerKeys = stdenvNoCC.mkDerivation (finalComposerKeysAttrs: {
     pname = "composer-keys";
@@ -43,13 +48,9 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   COMPOSER_HTACCESS_PROTECT = "0";
   COMPOSER_DISABLE_NETWORK = "1";
 
-  nativeBuildInputs = [
-    makeBinaryWrapper
-  ];
+  nativeBuildInputs = [ makeBinaryWrapper ];
 
-  buildInputs = [
-    composer
-  ];
+  buildInputs = [ composer ];
 
   configurePhase = ''
     runHook preConfigure
diff --git a/pkgs/build-support/php/pkgs/composer-phar.nix b/pkgs/build-support/php/pkgs/composer-phar.nix
index f281334ab2d9..a03adc6e6ab0 100644
--- a/pkgs/build-support/php/pkgs/composer-phar.nix
+++ b/pkgs/build-support/php/pkgs/composer-phar.nix
@@ -1,17 +1,17 @@
 {
-  _7zz
-  , cacert
-  , curl
-  , fetchurl
-  , git
-  , lib
-  , makeBinaryWrapper
-  , php
-  , stdenvNoCC
-  , unzip
-  , xz
-  , version
-  , pharHash
+  _7zz,
+  cacert,
+  curl,
+  fetchurl,
+  git,
+  lib,
+  makeBinaryWrapper,
+  php,
+  stdenvNoCC,
+  unzip,
+  xz,
+  version,
+  pharHash,
 }:
 
 stdenvNoCC.mkDerivation (finalAttrs: {
@@ -34,7 +34,16 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     install -D $src $out/libexec/composer/composer.phar
     makeWrapper ${php}/bin/php $out/bin/composer \
       --add-flags "$out/libexec/composer/composer.phar" \
-      --prefix PATH : ${lib.makeBinPath [ _7zz cacert curl git unzip xz ]}
+      --prefix PATH : ${
+        lib.makeBinPath [
+          _7zz
+          cacert
+          curl
+          git
+          unzip
+          xz
+        ]
+      }
 
     runHook postInstall
   '';