diff --git a/pkgs/applications/graphics/oculante/default.nix b/pkgs/applications/graphics/oculante/default.nix
index 3f3d39769f811..eafa515da340d 100644
--- a/pkgs/applications/graphics/oculante/default.nix
+++ b/pkgs/applications/graphics/oculante/default.nix
@@ -41,8 +41,6 @@ rustPlatform.buildRustPackage rec {
     wrapGAppsHook3
   ];
 
-  checkFlagsArray = [ "--skip=tests::net" ]; # requires network access
-
   buildInputs = [
     openssl
     fontconfig
@@ -62,6 +60,7 @@ rustPlatform.buildRustPackage rec {
 
   checkFlags = [
     "--skip=bench"
+    "--skip=tests::net" # requires network access
   ];
 
   postInstall = ''
diff --git a/pkgs/applications/networking/instant-messengers/element/keytar/default.nix b/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
index d43894e08239a..7d17d582762a3 100644
--- a/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
+++ b/pkgs/applications/networking/instant-messengers/element/keytar/default.nix
@@ -37,10 +37,10 @@ in stdenv.mkDerivation rec {
   '';
 
   # https://nodejs.org/api/os.html#osarch
-  npmFlagsArray = [ "--arch=${if stdenv.hostPlatform.parsed.cpu.name == "i686" then "ia32"
-                             else if stdenv.hostPlatform.parsed.cpu.name == "x86_64" then "x64"
-                             else if stdenv.hostPlatform.parsed.cpu.name == "aarch64" then "arm64"
-                             else stdenv.hostPlatform.parsed.cpu.name}" ];
+  npmFlags = [ "--arch=${if stdenv.hostPlatform.parsed.cpu.name == "i686" then "ia32"
+                        else if stdenv.hostPlatform.parsed.cpu.name == "x86_64" then "x64"
+                        else if stdenv.hostPlatform.parsed.cpu.name == "aarch64" then "arm64"
+                        else stdenv.hostPlatform.parsed.cpu.name}" ];
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/applications/video/uvccapture/default.nix b/pkgs/applications/video/uvccapture/default.nix
index 96e42b1a7f95a..f7067c8dd71a3 100644
--- a/pkgs/applications/video/uvccapture/default.nix
+++ b/pkgs/applications/video/uvccapture/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     done
   '';
 
-  makeFlagsArray = [ "PREFIX=$(out)/bin/" ];
+  makeFlags = [ "PREFIX=$(out)/bin/" ];
 
   preInstall = ''
     mkdir -p "$out/bin"
diff --git a/pkgs/by-name/ne/neovim-unwrapped/package.nix b/pkgs/by-name/ne/neovim-unwrapped/package.nix
index b40ffac4a3a67..3eeee33d068b0 100644
--- a/pkgs/by-name/ne/neovim-unwrapped/package.nix
+++ b/pkgs/by-name/ne/neovim-unwrapped/package.nix
@@ -149,7 +149,7 @@ in {
     # check that the above patching actually works
     disallowedRequisites = [ stdenv.cc ] ++ lib.optional (lua != codegenLua) codegenLua;
 
-    cmakeFlagsArray = [
+    cmakeFlags = [
       # Don't use downloaded dependencies. At the end of the configurePhase one
       # can spot that cmake says this option was "not used by the project".
       # That's because all dependencies were found and
@@ -157,15 +157,13 @@ in {
       "-DUSE_BUNDLED=OFF"
     ]
     ++ lib.optional (!lua.pkgs.isLuaJIT) "-DPREFER_LUA=ON"
-    ;
+    ++ lib.optionals lua.pkgs.isLuaJIT [
+      "-DLUAC_PRG=${codegenLua}/bin/luajit -b -s %s -"
+      "-DLUA_GEN_PRG=${codegenLua}/bin/luajit"
+      "-DLUA_PRG=${neovimLuaEnvOnBuild}/bin/luajit"
+    ];
 
-    preConfigure = lib.optionalString lua.pkgs.isLuaJIT ''
-      cmakeFlagsArray+=(
-        "-DLUAC_PRG=${codegenLua}/bin/luajit -b -s %s -"
-        "-DLUA_GEN_PRG=${codegenLua}/bin/luajit"
-        "-DLUA_PRG=${neovimLuaEnvOnBuild}/bin/luajit"
-      )
-    '' + lib.optionalString stdenv.isDarwin ''
+    preConfigure = lib.optionalString stdenv.isDarwin ''
       substituteInPlace src/nvim/CMakeLists.txt --replace "    util" ""
     '' + ''
       mkdir -p $out/lib/nvim/parser
diff --git a/pkgs/by-name/xm/xmoji/package.nix b/pkgs/by-name/xm/xmoji/package.nix
index f8558cb8146a0..de0b48feaf049 100644
--- a/pkgs/by-name/xm/xmoji/package.nix
+++ b/pkgs/by-name/xm/xmoji/package.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation (finalAttrs: {
     xcbutilimage
   ];
 
-  makeFlagsArray = [ "prefix=${placeholder "out"}" ];
+  makeFlags = [ "prefix=${placeholder "out"}" ];
 
   meta = {
     description = "Plain X11 emoji keyboard";
diff --git a/pkgs/by-name/xr/xr-hardware/package.nix b/pkgs/by-name/xr/xr-hardware/package.nix
index 0f9b9360d3c0d..aa7bd7596a68f 100644
--- a/pkgs/by-name/xr/xr-hardware/package.nix
+++ b/pkgs/by-name/xr/xr-hardware/package.nix
@@ -19,7 +19,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   dontBuild = true;
 
   installTargets = "install_package";
-  installFlagsArray = "DESTDIR=${placeholder "out"}";
+  installFlags = "DESTDIR=${placeholder "out"}";
 
   passthru.updateScript = nix-update-script { };
 
diff --git a/pkgs/development/cuda-modules/nccl/default.nix b/pkgs/development/cuda-modules/nccl/default.nix
index 3dd36e17f0a42..00026d97e69f2 100644
--- a/pkgs/development/cuda-modules/nccl/default.nix
+++ b/pkgs/development/cuda-modules/nccl/default.nix
@@ -69,7 +69,7 @@ backendStdenv.mkDerivation (finalAttrs: {
     patchShebangs ./src/device/generate.py
   '';
 
-  makeFlagsArray =
+  makeFlags =
     [
       "PREFIX=$(out)"
       "NVCC_GENCODE=${cudaFlags.gencodeString}"
diff --git a/pkgs/development/cuda-modules/saxpy/default.nix b/pkgs/development/cuda-modules/saxpy/default.nix
index 5eb0a235ace81..57b6120ccea92 100644
--- a/pkgs/development/cuda-modules/saxpy/default.nix
+++ b/pkgs/development/cuda-modules/saxpy/default.nix
@@ -53,7 +53,7 @@ backendStdenv.mkDerivation {
     ]
     ++ lib.optionals (cudaAtLeast "12.0") [ cuda_cccl ];
 
-  cmakeFlagsArray = [
+  cmakeFlags = [
     (lib.cmakeBool "CMAKE_VERBOSE_MAKEFILE" true)
     (lib.cmakeFeature "CMAKE_CUDA_ARCHITECTURES" flags.cmakeCudaArchitecturesString)
   ];
diff --git a/pkgs/development/libraries/appindicator-sharp/default.nix b/pkgs/development/libraries/appindicator-sharp/default.nix
index 9eff4e3895ba1..3062074f4cd79 100644
--- a/pkgs/development/libraries/appindicator-sharp/default.nix
+++ b/pkgs/development/libraries/appindicator-sharp/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   ];
 
   ac_cv_path_MDOC = "no";
-  installFlagsArray = ["GAPIXMLDIR=/tmp/gapixml"];
+  installFlags = ["GAPIXMLDIR=/tmp/gapixml"];
 
   meta = {
     description = "Bindings for appindicator using gobject-introspection";
diff --git a/pkgs/development/libraries/science/math/bonmin/default.nix b/pkgs/development/libraries/science/math/bonmin/default.nix
index 9fca78df7c63c..a389c602b1b69 100644
--- a/pkgs/development/libraries/science/math/bonmin/default.nix
+++ b/pkgs/development/libraries/science/math/bonmin/default.nix
@@ -31,6 +31,8 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-nqjAQ1NdNJ/T4p8YljEWRt/uy2aDwyBeAsag0TmRc5Q=";
   };
 
+  __structuredAttrs = true;
+
   nativeBuildInputs = [
     doxygen
     gfortran
@@ -50,7 +52,7 @@ stdenv.mkDerivation rec {
     zlib
   ];
 
-  configureFlagsArray = lib.optionals stdenv.isDarwin [
+  configureFlags = lib.optionals stdenv.isDarwin [
     "--with-asl-lib=-lipoptamplinterface -lamplsolver"
   ];
 
diff --git a/pkgs/development/libraries/science/math/scalapack/default.nix b/pkgs/development/libraries/science/math/scalapack/default.nix
index f1e0f6cf5a128..b36f486478193 100644
--- a/pkgs/development/libraries/science/math/scalapack/default.nix
+++ b/pkgs/development/libraries/science/math/scalapack/default.nix
@@ -17,6 +17,8 @@ stdenv.mkDerivation rec {
 
   passthru = { inherit (blas) isILP64; };
 
+  __structuredAttrs = true;
+
   # upstream patch, remove with next release
   patches = [ (fetchpatch {
     name = "gcc-10";
@@ -62,7 +64,7 @@ stdenv.mkDerivation rec {
 
   # Increase individual test timeout from 1500s to 10000s because hydra's builds
   # sometimes fail due to this
-  checkFlagsArray = [ "ARGS=--timeout 10000" ];
+  checkFlags = [ "ARGS=--timeout 10000" ];
 
   postFixup = ''
     # _IMPORT_PREFIX, used to point to lib, points to dev output. Every package using the generated
diff --git a/pkgs/development/libraries/webkit2-sharp/default.nix b/pkgs/development/libraries/webkit2-sharp/default.nix
index de10fff43da0c..6407a8709f6e8 100644
--- a/pkgs/development/libraries/webkit2-sharp/default.nix
+++ b/pkgs/development/libraries/webkit2-sharp/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
   '';
 
   ac_cv_path_MONODOCER = "no";
-  installFlagsArray = ["GAPIXMLDIR=/tmp/gapixml"];
+  installFlags = ["GAPIXMLDIR=/tmp/gapixml"];
 
   passthru = {
     inherit webkitgtk;
diff --git a/pkgs/development/php-packages/apcu/default.nix b/pkgs/development/php-packages/apcu/default.nix
index 2e8294d0345bf..8a94ed44f0988 100644
--- a/pkgs/development/php-packages/apcu/default.nix
+++ b/pkgs/development/php-packages/apcu/default.nix
@@ -38,11 +38,6 @@ buildPecl {
 
   buildInputs = [ pcre2 ];
   doCheck = true;
-  checkTarget = "test";
-  checkFlagsArray = [
-    "REPORT_EXIT_STATUS=1"
-    "NO_INTERACTION=1"
-  ];
   makeFlags = [ "phpincludedir=$(dev)/include" ];
   outputs = [
     "out"
diff --git a/pkgs/development/php-packages/xdebug/default.nix b/pkgs/development/php-packages/xdebug/default.nix
index 83e6950b0fe78..84ac38f6c4b85 100644
--- a/pkgs/development/php-packages/xdebug/default.nix
+++ b/pkgs/development/php-packages/xdebug/default.nix
@@ -20,7 +20,6 @@ buildPecl {
   };
 
   doCheck = true;
-  checkTarget = "test";
 
   zendExtension = true;
 
diff --git a/pkgs/development/tools/build-managers/fac/default.nix b/pkgs/development/tools/build-managers/fac/default.nix
index d4748ecf98a04..b44cefe6a9536 100644
--- a/pkgs/development/tools/build-managers/fac/default.nix
+++ b/pkgs/development/tools/build-managers/fac/default.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage rec {
   # fac includes a unit test called ls_files_works which assumes it's
   # running in a git repo. Nix's sandbox runs cargo build outside git,
   # so this test won't work.
-  checkFlagsArray = [ "--skip=ls_files_works" ];
+  checkFlags = [ "--skip=ls_files_works" ];
 
   # fac calls git at runtime, expecting it to be in the PATH,
   # so we need to patch it to call git by absolute path instead.
diff --git a/pkgs/development/tools/rust/cargo-cache/default.nix b/pkgs/development/tools/rust/cargo-cache/default.nix
index 8c8a4ea29a34c..1c19b61bf8b45 100644
--- a/pkgs/development/tools/rust/cargo-cache/default.nix
+++ b/pkgs/development/tools/rust/cargo-cache/default.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
 
-  checkFlagsArray = [ "offline_tests" ];
+  checkFlags = [ "offline_tests" ];
 
   meta = with lib; {
     description = "Manage cargo cache (\${CARGO_HOME}, ~/.cargo/), print sizes of dirs and remove dirs selectively";
diff --git a/pkgs/games/warmux/default.nix b/pkgs/games/warmux/default.nix
index 2e3a96a086519..368f0d39e9c29 100644
--- a/pkgs/games/warmux/default.nix
+++ b/pkgs/games/warmux/default.nix
@@ -15,8 +15,10 @@ stdenv.mkDerivation {
     sha256 = "1hvzglsmp75xiqqb0k75qjz4jwi8kl3fhn8zfsz53hhhqmbw6wkr";
   };
 
+  __structuredAttrs = true;
+
   preConfigure = "patchShebangs autogen.sh && ./autogen.sh";
-  configureFlagsArray = ("CFLAGS=-include ${zlib.dev}/include/zlib.h");
+  configureFlags = ["CFLAGS=-include ${zlib.dev}/include/zlib.h"];
 
   nativeBuildInputs = [
     autoconf automake gettext intltool libtool pkg-config
diff --git a/pkgs/servers/janus-gateway/default.nix b/pkgs/servers/janus-gateway/default.nix
index 8a08962f646bb..9a0ecad23dd4d 100644
--- a/pkgs/servers/janus-gateway/default.nix
+++ b/pkgs/servers/janus-gateway/default.nix
@@ -42,7 +42,7 @@ stdenv.mkDerivation rec {
     "--enable-post-processing"
   ];
 
-  makeFlagsArray = [
+  makeFlags = [
     "BORINGSSL_LIBS=-L${lib.getLib boringssl}/lib"
   ];
 
diff --git a/pkgs/tools/backup/monolith/default.nix b/pkgs/tools/backup/monolith/default.nix
index b43e97e1ba958..b95ada9574ed6 100644
--- a/pkgs/tools/backup/monolith/default.nix
+++ b/pkgs/tools/backup/monolith/default.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage rec {
   buildInputs = lib.optionals stdenv.isLinux [ openssl ]
     ++ lib.optionals stdenv.isDarwin [ libiconv Security SystemConfiguration ];
 
-  checkFlagsArray = [ "--skip=tests::cli" ];
+  checkFlags = [ "--skip=tests::cli" ];
 
   meta = with lib; {
     description = "Bundle any web page into a single HTML file";
diff --git a/pkgs/tools/cd-dvd/sacd/default.nix b/pkgs/tools/cd-dvd/sacd/default.nix
index 67c70ebc76a05..ddd2c2dcd8c8b 100644
--- a/pkgs/tools/cd-dvd/sacd/default.nix
+++ b/pkgs/tools/cd-dvd/sacd/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation (finalAttrs: {
     })
   ];
 
-  makeFlagsArray = [
+  makeFlags = [
     "PREFIX=$(out)"
   ];
 
diff --git a/pkgs/tools/misc/intermodal/default.nix b/pkgs/tools/misc/intermodal/default.nix
index c15d529279da5..a120084087236 100644
--- a/pkgs/tools/misc/intermodal/default.nix
+++ b/pkgs/tools/misc/intermodal/default.nix
@@ -14,7 +14,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-7vtUMG6mxAHKnbouyTsaUf1myJssxYoqAIOjc6m86Fo=";
 
   # include_hidden test tries to use `chflags` on darwin
-  checkFlagsArray = lib.optionals stdenv.isDarwin [ "--skip=subcommand::torrent::create::tests::include_hidden" ];
+  checkFlags = lib.optionals stdenv.isDarwin [ "--skip=subcommand::torrent::create::tests::include_hidden" ];
 
   nativeBuildInputs = [ installShellFiles ];
 
diff --git a/pkgs/tools/security/sudo/default.nix b/pkgs/tools/security/sudo/default.nix
index 885fcc51aa48e..508cfafc69de3 100644
--- a/pkgs/tools/security/sudo/default.nix
+++ b/pkgs/tools/security/sudo/default.nix
@@ -39,6 +39,7 @@ stdenv.mkDerivation (finalAttrs: {
     "--with-iologdir=/var/log/sudo-io"
     "--with-sendmail=${sendmailPath}"
     "--enable-tmpfiles.d=no"
+    "--with-passprompt=[sudo] password for %p: " # intentional trailing space
   ] ++ lib.optionals withInsults [
     "--with-insults"
     "--with-all-insults"
@@ -47,10 +48,6 @@ stdenv.mkDerivation (finalAttrs: {
     "--with-sssd-lib=${sssd}/lib"
   ];
 
-  configureFlagsArray = [
-    "--with-passprompt=[sudo] password for %p: " # intentional trailing space
-  ];
-
   postConfigure =
     ''
       cat >> pathnames.h <<'EOF'