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-rw-r--r--pkgs/development/libraries/ace/default.nix2
-rw-r--r--pkgs/development/libraries/assimp/default.nix2
-rw-r--r--pkgs/development/libraries/audio/qm-dsp/default.nix2
-rw-r--r--pkgs/development/libraries/aws-sdk-cpp/default.nix2
-rw-r--r--pkgs/development/libraries/bamf/default.nix2
-rw-r--r--pkgs/development/libraries/belle-sip/default.nix2
-rw-r--r--pkgs/development/libraries/boringssl/default.nix2
-rw-r--r--pkgs/development/libraries/bullet/default.nix2
-rw-r--r--pkgs/development/libraries/bzrtp/default.nix2
-rw-r--r--pkgs/development/libraries/classads/default.nix2
-rw-r--r--pkgs/development/libraries/clucene-core/2.x.nix2
-rw-r--r--pkgs/development/libraries/clucene-core/default.nix2
-rw-r--r--pkgs/development/libraries/cpp-hocon/default.nix2
-rw-r--r--pkgs/development/libraries/cpp-ipfs-http-client/default.nix2
-rw-r--r--pkgs/development/libraries/cppdb/default.nix2
-rw-r--r--pkgs/development/libraries/crc32c/default.nix2
-rw-r--r--pkgs/development/libraries/easyloggingpp/default.nix2
-rw-r--r--pkgs/development/libraries/ffms/default.nix2
-rw-r--r--pkgs/development/libraries/flatcc/default.nix2
-rw-r--r--pkgs/development/libraries/folly/default.nix2
-rw-r--r--pkgs/development/libraries/gegl/default.nix2
-rw-r--r--pkgs/development/libraries/geis/default.nix2
-rw-r--r--pkgs/development/libraries/glib/default.nix2
-rw-r--r--pkgs/development/libraries/glibc/default.nix2
-rw-r--r--pkgs/development/libraries/glm/default.nix2
-rw-r--r--pkgs/development/libraries/gnome-online-accounts/default.nix2
-rw-r--r--pkgs/development/libraries/gperftools/default.nix2
-rw-r--r--pkgs/development/libraries/gpgme/default.nix2
-rw-r--r--pkgs/development/libraries/grpc/default.nix2
-rw-r--r--pkgs/development/libraries/gsl/default.nix2
-rw-r--r--pkgs/development/libraries/gsmlib/default.nix2
-rw-r--r--pkgs/development/libraries/gtk-frdp/default.nix2
-rw-r--r--pkgs/development/libraries/gtk/3.x.nix2
-rw-r--r--pkgs/development/libraries/gtk/4.x.nix2
-rw-r--r--pkgs/development/libraries/http-parser/default.nix2
-rw-r--r--pkgs/development/libraries/intel-media-driver/default.nix2
-rw-r--r--pkgs/development/libraries/iqueue/default.nix2
-rw-r--r--pkgs/development/libraries/jemalloc/default.nix2
-rw-r--r--pkgs/development/libraries/leatherman/default.nix2
-rw-r--r--pkgs/development/libraries/libagar/libagar_test.nix2
-rw-r--r--pkgs/development/libraries/libbladeRF/default.nix2
-rw-r--r--pkgs/development/libraries/libcaca/default.nix2
-rw-r--r--pkgs/development/libraries/libcamera/default.nix2
-rw-r--r--pkgs/development/libraries/libchop/default.nix2
-rw-r--r--pkgs/development/libraries/libcli/default.nix2
-rw-r--r--pkgs/development/libraries/libclxclient/default.nix2
-rw-r--r--pkgs/development/libraries/libcutl/default.nix2
-rw-r--r--pkgs/development/libraries/libdynd/default.nix2
-rw-r--r--pkgs/development/libraries/libe-book/default.nix2
-rw-r--r--pkgs/development/libraries/libepoxy/default.nix2
-rw-r--r--pkgs/development/libraries/libfaketime/default.nix2
-rw-r--r--pkgs/development/libraries/libfpx/default.nix2
-rw-r--r--pkgs/development/libraries/libgaminggear/default.nix2
-rw-r--r--pkgs/development/libraries/libglvnd/default.nix2
-rw-r--r--pkgs/development/libraries/libicns/default.nix2
-rw-r--r--pkgs/development/libraries/libipfix/default.nix2
-rw-r--r--pkgs/development/libraries/libiscsi/default.nix2
-rw-r--r--pkgs/development/libraries/libjson-rpc-cpp/default.nix2
-rw-r--r--pkgs/development/libraries/libjson/default.nix2
-rw-r--r--pkgs/development/libraries/liblastfm/default.nix2
-rw-r--r--pkgs/development/libraries/libmemcached/default.nix2
-rw-r--r--pkgs/development/libraries/libomxil-bellagio/default.nix2
-rw-r--r--pkgs/development/libraries/liboping/default.nix2
-rw-r--r--pkgs/development/libraries/libpfm/default.nix2
-rw-r--r--pkgs/development/libraries/libpulsar/default.nix2
-rw-r--r--pkgs/development/libraries/librsb/default.nix2
-rw-r--r--pkgs/development/libraries/libsoundio/default.nix2
-rw-r--r--pkgs/development/libraries/libsoup/default.nix2
-rw-r--r--pkgs/development/libraries/libtomcrypt/default.nix2
-rw-r--r--pkgs/development/libraries/libtommath/default.nix2
-rw-r--r--pkgs/development/libraries/libunique/default.nix2
-rw-r--r--pkgs/development/libraries/libvirt-glib/default.nix2
-rw-r--r--pkgs/development/libraries/libwhereami/default.nix2
-rw-r--r--pkgs/development/libraries/libwps/default.nix2
-rw-r--r--pkgs/development/libraries/libxkbcommon/libxkbcommon_7.nix2
-rw-r--r--pkgs/development/libraries/loki/default.nix2
-rw-r--r--pkgs/development/libraries/mapbox-gl-native/default.nix2
-rw-r--r--pkgs/development/libraries/maplibre-gl-native/default.nix2
-rw-r--r--pkgs/development/libraries/mesa/default.nix2
-rw-r--r--pkgs/development/libraries/mp4v2/default.nix2
-rw-r--r--pkgs/development/libraries/mps/default.nix2
-rw-r--r--pkgs/development/libraries/nss/generic.nix2
-rw-r--r--pkgs/development/libraries/ntrack/default.nix2
-rw-r--r--pkgs/development/libraries/octomap/default.nix2
-rw-r--r--pkgs/development/libraries/opae/default.nix2
-rw-r--r--pkgs/development/libraries/opencv/3.x.nix2
-rw-r--r--pkgs/development/libraries/opencv/4.x.nix2
-rw-r--r--pkgs/development/libraries/opencv/default.nix2
-rw-r--r--pkgs/development/libraries/opendbx/default.nix2
-rw-r--r--pkgs/development/libraries/openldap/default.nix2
-rw-r--r--pkgs/development/libraries/opensaml-cpp/default.nix2
-rw-r--r--pkgs/development/libraries/ortp/default.nix2
-rw-r--r--pkgs/development/libraries/phonon/backends/gstreamer.nix2
-rw-r--r--pkgs/development/libraries/phonon/default.nix2
-rw-r--r--pkgs/development/libraries/physics/cernlib/default.nix2
-rw-r--r--pkgs/development/libraries/physics/nlojet/default.nix2
-rw-r--r--pkgs/development/libraries/pipewire/0.2.nix2
-rw-r--r--pkgs/development/libraries/pmdk/default.nix2
-rw-r--r--pkgs/development/libraries/poly2tri-c/default.nix2
-rw-r--r--pkgs/development/libraries/portaudio/default.nix2
-rw-r--r--pkgs/development/libraries/precice/default.nix2
-rw-r--r--pkgs/development/libraries/prime-server/default.nix2
-rw-r--r--pkgs/development/libraries/prometheus-client-c/default.nix2
-rw-r--r--pkgs/development/libraries/qoauth/default.nix2
-rw-r--r--pkgs/development/libraries/qt-4.x/4.8/default.nix2
-rw-r--r--pkgs/development/libraries/qt-5/modules/qt3d.nix2
-rw-r--r--pkgs/development/libraries/qt-5/modules/qtbase.nix2
-rw-r--r--pkgs/development/libraries/qt-5/modules/qtserialport.nix2
-rw-r--r--pkgs/development/libraries/qt-5/modules/qttools.nix2
-rw-r--r--pkgs/development/libraries/qt-5/modules/qtwebengine.nix2
-rw-r--r--pkgs/development/libraries/qt-5/modules/qtwebkit.nix2
-rw-r--r--pkgs/development/libraries/qt-6/modules/qtmultimedia.nix2
-rw-r--r--pkgs/development/libraries/qt-6/modules/qtquick3dphysics.nix2
-rw-r--r--pkgs/development/libraries/qt-6/modules/qttools.nix2
-rw-r--r--pkgs/development/libraries/rdkafka/default.nix2
-rw-r--r--pkgs/development/libraries/rlottie/default.nix2
-rw-r--r--pkgs/development/libraries/rocksdb/default.nix2
-rw-r--r--pkgs/development/libraries/roctracer/default.nix2
-rw-r--r--pkgs/development/libraries/science/math/nccl/default.nix2
-rw-r--r--pkgs/development/libraries/science/math/osi/default.nix2
-rw-r--r--pkgs/development/libraries/science/math/suitesparse/4.4.nix2
-rw-r--r--pkgs/development/libraries/shibboleth-sp/default.nix2
-rw-r--r--pkgs/development/libraries/smesh/default.nix2
-rw-r--r--pkgs/development/libraries/spdk/default.nix2
-rw-r--r--pkgs/development/libraries/speech-tools/default.nix2
-rw-r--r--pkgs/development/libraries/spice/default.nix2
-rw-r--r--pkgs/development/libraries/sqlite/default.nix4
-rw-r--r--pkgs/development/libraries/swiftshader/default.nix2
-rw-r--r--pkgs/development/libraries/tinyxml/2.6.2.nix2
-rw-r--r--pkgs/development/libraries/ucl/default.nix2
-rw-r--r--pkgs/development/libraries/uri/default.nix2
-rw-r--r--pkgs/development/libraries/ustr/default.nix2
-rw-r--r--pkgs/development/libraries/v8/8_x.nix2
-rw-r--r--pkgs/development/libraries/v8/default.nix2
-rw-r--r--pkgs/development/libraries/vaapi-intel-hybrid/default.nix2
-rw-r--r--pkgs/development/libraries/vigra/default.nix2
-rw-r--r--pkgs/development/libraries/vte/default.nix2
-rw-r--r--pkgs/development/libraries/wxwidgets/wxmac30.nix2
-rw-r--r--pkgs/development/libraries/xml-tooling-c/default.nix2
-rw-r--r--pkgs/development/libraries/zlib/default.nix2
140 files changed, 141 insertions, 141 deletions
diff --git a/pkgs/development/libraries/ace/default.nix b/pkgs/development/libraries/ace/default.nix
index 27e5afddd5e..bae0401a781 100644
--- a/pkgs/development/libraries/ace/default.nix
+++ b/pkgs/development/libraries/ace/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config libtool ];
   buildInputs = [ perl ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=format-security"
   ];
 
diff --git a/pkgs/development/libraries/assimp/default.nix b/pkgs/development/libraries/assimp/default.nix
index 4e10fd31c0e..05f2d439adf 100644
--- a/pkgs/development/libraries/assimp/default.nix
+++ b/pkgs/development/libraries/assimp/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [ "-DASSIMP_BUILD_ASSIMP_TOOLS=ON" ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=array-bounds"
   ];
diff --git a/pkgs/development/libraries/audio/qm-dsp/default.nix b/pkgs/development/libraries/audio/qm-dsp/default.nix
index a9163a25776..59f7d169291 100644
--- a/pkgs/development/libraries/audio/qm-dsp/default.nix
+++ b/pkgs/development/libraries/audio/qm-dsp/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     "LIBDIR=${placeholder "out"}/lib"
   ];
 
-  NIX_CFLAGS_COMPILE = "-I${kissfft}/include/kissfft";
+  env.NIX_CFLAGS_COMPILE = "-I${kissfft}/include/kissfft";
 
   meta = with lib; {
     description = "A C++ library of functions for DSP and Music Informatics purposes";
diff --git a/pkgs/development/libraries/aws-sdk-cpp/default.nix b/pkgs/development/libraries/aws-sdk-cpp/default.nix
index c72347a2b7d..bb7989a2cbf 100644
--- a/pkgs/development/libraries/aws-sdk-cpp/default.nix
+++ b/pkgs/development/libraries/aws-sdk-cpp/default.nix
@@ -105,7 +105,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optional (apis != ["*"])
     "-DBUILD_ONLY=${lib.concatStringsSep ";" apis}";
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # openssl 3 generates several deprecation warnings
     "-Wno-error=deprecated-declarations"
   ];
diff --git a/pkgs/development/libraries/bamf/default.nix b/pkgs/development/libraries/bamf/default.nix
index b91c5025db3..99c1df8e0a3 100644
--- a/pkgs/development/libraries/bamf/default.nix
+++ b/pkgs/development/libraries/bamf/default.nix
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
   doCheck = false;
 
   # Ignore deprecation errors
-  NIX_CFLAGS_COMPILE = "-DGLIB_DISABLE_DEPRECATION_WARNINGS";
+  env.NIX_CFLAGS_COMPILE = "-DGLIB_DISABLE_DEPRECATION_WARNINGS";
 
   passthru.updateScript = gitUpdater {
     ignoredVersions = ".ubuntu.*";
diff --git a/pkgs/development/libraries/belle-sip/default.nix b/pkgs/development/libraries/belle-sip/default.nix
index 9a64002d83b..01c73a8515e 100644
--- a/pkgs/development/libraries/belle-sip/default.nix
+++ b/pkgs/development/libraries/belle-sip/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
   # Do not build static libraries
   cmakeFlags = [ "-DENABLE_STATIC=NO" ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=cast-function-type"
     "-Wno-error=deprecated-declarations"
     "-Wno-error=format-truncation"
diff --git a/pkgs/development/libraries/boringssl/default.nix b/pkgs/development/libraries/boringssl/default.nix
index 955157d055a..7fbb4d60f60 100644
--- a/pkgs/development/libraries/boringssl/default.nix
+++ b/pkgs/development/libraries/boringssl/default.nix
@@ -30,7 +30,7 @@ buildGoModule {
     export GOARCH=$(go env GOHOSTARCH)
   '';
 
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
+  env.NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
     # Needed with GCC 12 but breaks on darwin (with clang)
     "-Wno-error=stringop-overflow"
   ];
diff --git a/pkgs/development/libraries/bullet/default.nix b/pkgs/development/libraries/bullet/default.nix
index e2658423ad3..2dc3266291d 100644
--- a/pkgs/development/libraries/bullet/default.nix
+++ b/pkgs/development/libraries/bullet/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     "-DBUILD_BULLET_ROBOTICS_GUI_EXTRA=OFF"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang
     "-Wno-error=argument-outside-range -Wno-error=c++11-narrowing";
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/bzrtp/default.nix b/pkgs/development/libraries/bzrtp/default.nix
index dc1d9e7e788..46ea599cefc 100644
--- a/pkgs/development/libraries/bzrtp/default.nix
+++ b/pkgs/development/libraries/bzrtp/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   # Do not build static libraries
   cmakeFlags = [ "-DENABLE_STATIC=NO" "-DCMAKE_C_FLAGS=-Wno-error=cast-function-type" ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=stringop-overflow"
   ];
diff --git a/pkgs/development/libraries/classads/default.nix b/pkgs/development/libraries/classads/default.nix
index 1a05eededc7..6fef10fe5d2 100644
--- a/pkgs/development/libraries/classads/default.nix
+++ b/pkgs/development/libraries/classads/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   ];
 
   # error: use of undeclared identifier 'finite'; did you mean 'isfinite'?
-  NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite";
 
   meta = {
     homepage = "http://www.cs.wisc.edu/condor/classad/";
diff --git a/pkgs/development/libraries/clucene-core/2.x.nix b/pkgs/development/libraries/clucene-core/2.x.nix
index 538c4ceb4f5..18d055a387a 100644
--- a/pkgs/development/libraries/clucene-core/2.x.nix
+++ b/pkgs/development/libraries/clucene-core/2.x.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
   # /build/clucene-core-2.3.3.4/build/bin/cl_test"
   doCheck = false;
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=c++11-narrowing";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=c++11-narrowing";
 
   meta = with lib; {
     description = "Core library for full-featured text search engine";
diff --git a/pkgs/development/libraries/clucene-core/default.nix b/pkgs/development/libraries/clucene-core/default.nix
index 59b5db69b63..b6765af12a4 100644
--- a/pkgs/development/libraries/clucene-core/default.nix
+++ b/pkgs/development/libraries/clucene-core/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   patches = [ ./gcc6.patch ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-std=c++11"
   ];
 
diff --git a/pkgs/development/libraries/cpp-hocon/default.nix b/pkgs/development/libraries/cpp-hocon/default.nix
index bba2e03f8d5..fa4fd5fe6d5 100644
--- a/pkgs/development/libraries/cpp-hocon/default.nix
+++ b/pkgs/development/libraries/cpp-hocon/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
     sed -i -e '/add_subdirectory(tests)/d' lib/CMakeLists.txt
   '';
 
-  NIX_CFLAGS_COMPILE = "-Wno-error";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error";
 
   nativeBuildInputs = [ cmake ];
 
diff --git a/pkgs/development/libraries/cpp-ipfs-http-client/default.nix b/pkgs/development/libraries/cpp-ipfs-http-client/default.nix
index 0388dd584cd..d44eed5e76f 100644
--- a/pkgs/development/libraries/cpp-ipfs-http-client/default.nix
+++ b/pkgs/development/libraries/cpp-ipfs-http-client/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   buildInputs = [ curl ];
   propagatedBuildInputs = [ nlohmann_json ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=range-loop-construct"
     # Needed with GCC 12
     "-Wno-error=deprecated-declarations"
diff --git a/pkgs/development/libraries/cppdb/default.nix b/pkgs/development/libraries/cppdb/default.nix
index 98c9c7ecac1..b71a6c07303 100644
--- a/pkgs/development/libraries/cppdb/default.nix
+++ b/pkgs/development/libraries/cppdb/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ sqlite libmysqlclient postgresql unixODBC ];
 
   cmakeFlags = [ "--no-warn-unused-cli" ];
-  NIX_CFLAGS_COMPILE = "-I${libmysqlclient}/include/mysql -L${libmysqlclient}/lib/mysql";
+  env.NIX_CFLAGS_COMPILE = "-I${libmysqlclient}/include/mysql -L${libmysqlclient}/lib/mysql";
 
   meta = with lib; {
     homepage = "http://cppcms.com/sql/cppdb/";
diff --git a/pkgs/development/libraries/crc32c/default.nix b/pkgs/development/libraries/crc32c/default.nix
index 8790840c4c1..3b27601bcbf 100644
--- a/pkgs/development/libraries/crc32c/default.nix
+++ b/pkgs/development/libraries/crc32c/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   buildInputs = [ gflags ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isAarch64 "-march=armv8-a+crc";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isAarch64 "-march=armv8-a+crc";
 
   cmakeFlags = [
     "-DCRC32C_INSTALL=1"
diff --git a/pkgs/development/libraries/easyloggingpp/default.nix b/pkgs/development/libraries/easyloggingpp/default.nix
index 03c4ea0ee8f..3fa471b30b2 100644
--- a/pkgs/development/libraries/easyloggingpp/default.nix
+++ b/pkgs/development/libraries/easyloggingpp/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [cmake];
   buildInputs = [gtest];
   cmakeFlags = [ "-Dtest=ON" ];
-  NIX_CFLAGS_COMPILE = "-std=c++11" +
+  env.NIX_CFLAGS_COMPILE = "-std=c++11" +
     lib.optionalString stdenv.isLinux " -pthread";
   postInstall = ''
     mkdir -p $out/include
diff --git a/pkgs/development/libraries/ffms/default.nix b/pkgs/development/libraries/ffms/default.nix
index 6e7a58f5597..06fce3891e2 100644
--- a/pkgs/development/libraries/ffms/default.nix
+++ b/pkgs/development/libraries/ffms/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-3bPxt911T0bGpAIS2RxBjo+VV84xW06eKcCj3ZAcmvw=";
   };
 
-  NIX_CFLAGS_COMPILE = "-fPIC";
+  env.NIX_CFLAGS_COMPILE = "-fPIC";
 
   nativeBuildInputs = [
     autoreconfHook
diff --git a/pkgs/development/libraries/flatcc/default.nix b/pkgs/development/libraries/flatcc/default.nix
index 9928a98e371..a65ad5c6fe3 100644
--- a/pkgs/development/libraries/flatcc/default.nix
+++ b/pkgs/development/libraries/flatcc/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     "-DCMAKE_BUILD_TYPE=Release"
   ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=misleading-indentation"
     "-Wno-error=stringop-overflow"
   ];
diff --git a/pkgs/development/libraries/folly/default.nix b/pkgs/development/libraries/folly/default.nix
index e509ea79704..61db99f4787 100644
--- a/pkgs/development/libraries/folly/default.nix
+++ b/pkgs/development/libraries/folly/default.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
   # jemalloc headers are required in include/folly/portability/Malloc.h
   propagatedBuildInputs = lib.optional stdenv.isLinux jemalloc;
 
-  NIX_CFLAGS_COMPILE = toString [ "-DFOLLY_MOBILE=${if follyMobile then "1" else "0"}" "-fpermissive" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-DFOLLY_MOBILE=${if follyMobile then "1" else "0"}" "-fpermissive" ];
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"
 
diff --git a/pkgs/development/libraries/gegl/default.nix b/pkgs/development/libraries/gegl/default.nix
index 5400c1de592..df800e26ab9 100644
--- a/pkgs/development/libraries/gegl/default.nix
+++ b/pkgs/development/libraries/gegl/default.nix
@@ -115,7 +115,7 @@ stdenv.mkDerivation rec {
 
   # TODO: Fix missing math symbols in gegl seamless clone.
   # It only appears when we use packaged poly2tri-c instead of vendored one.
-  NIX_CFLAGS_COMPILE = "-lm";
+  env.NIX_CFLAGS_COMPILE = "-lm";
 
   postPatch = ''
     chmod +x tests/opencl/opencl_test.sh
diff --git a/pkgs/development/libraries/geis/default.nix b/pkgs/development/libraries/geis/default.nix
index 43b61e78fb4..fad65d7dd4c 100644
--- a/pkgs/development/libraries/geis/default.nix
+++ b/pkgs/development/libraries/geis/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
     sha256 = "1svhbjibm448ybq6gnjjzj0ak42srhihssafj0w402aj71lgaq4a";
   };
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=misleading-indentation -Wno-error=pointer-compare";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=misleading-indentation -Wno-error=pointer-compare";
 
   hardeningDisable = [ "format" ];
 
diff --git a/pkgs/development/libraries/glib/default.nix b/pkgs/development/libraries/glib/default.nix
index 9e932e547f4..de7f97527db 100644
--- a/pkgs/development/libraries/glib/default.nix
+++ b/pkgs/development/libraries/glib/default.nix
@@ -194,7 +194,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-Dxattr=false"
   ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=nonnull"
     # Default for release buildtype but passed manually because
     # we're using plain
diff --git a/pkgs/development/libraries/glibc/default.nix b/pkgs/development/libraries/glibc/default.nix
index 9193404d012..98f2e406bc0 100644
--- a/pkgs/development/libraries/glibc/default.nix
+++ b/pkgs/development/libraries/glibc/default.nix
@@ -50,7 +50,7 @@ in
     # invocation does not work.
     hardeningDisable = [ "fortify" "pie" "stackprotector" ];
 
-    NIX_CFLAGS_COMPILE = lib.concatStringsSep " "
+    env.NIX_CFLAGS_COMPILE = lib.concatStringsSep " "
       (builtins.concatLists [
         (lib.optionals withGd gdCflags)
         # Fix -Werror build failure when building glibc with musl with GCC >= 8, see:
diff --git a/pkgs/development/libraries/glm/default.nix b/pkgs/development/libraries/glm/default.nix
index d4c836b6912..826848cb98d 100644
--- a/pkgs/development/libraries/glm/default.nix
+++ b/pkgs/development/libraries/glm/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  NIX_CFLAGS_COMPILE =
+  env.NIX_CFLAGS_COMPILE =
     lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11") [
       "-fno-ipa-modref" # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102823
     ];
diff --git a/pkgs/development/libraries/gnome-online-accounts/default.nix b/pkgs/development/libraries/gnome-online-accounts/default.nix
index 43eb7a2ff30..2028e3eaef6 100644
--- a/pkgs/development/libraries/gnome-online-accounts/default.nix
+++ b/pkgs/development/libraries/gnome-online-accounts/default.nix
@@ -85,7 +85,7 @@ stdenv.mkDerivation rec {
     webkitgtk_4_1
   ];
 
-  NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/gio-unix-2.0";
+  env.NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/gio-unix-2.0";
 
   separateDebugInfo = true;
 
diff --git a/pkgs/development/libraries/gperftools/default.nix b/pkgs/development/libraries/gperftools/default.nix
index 002d07cc33b..da40c66e9fe 100644
--- a/pkgs/development/libraries/gperftools/default.nix
+++ b/pkgs/development/libraries/gperftools/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     substituteInPlace Makefile.am --replace stdc++ c++
   '';
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin
     "-D_XOPEN_SOURCE";
 
   # some packages want to link to the static tcmalloc_minimal
diff --git a/pkgs/development/libraries/gpgme/default.nix b/pkgs/development/libraries/gpgme/default.nix
index 050adad77ca..d5882c86168 100644
--- a/pkgs/development/libraries/gpgme/default.nix
+++ b/pkgs/development/libraries/gpgme/default.nix
@@ -104,7 +104,7 @@ stdenv.mkDerivation rec {
   # fit in the limit. https://github.com/NixOS/nix/pull/1085
   ++ lib.optionals stdenv.isDarwin [ "--disable-gpg-test" ];
 
-  NIX_CFLAGS_COMPILE = toString (
+  env.NIX_CFLAGS_COMPILE = toString (
     # qgpgme uses Q_ASSERT which retains build inputs at runtime unless
     # debugging is disabled
     lib.optional (qtbase != null) "-DQT_NO_DEBUG"
diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index 8a3a936b145..08de2cdf913 100644
--- a/pkgs/development/libraries/grpc/default.nix
+++ b/pkgs/development/libraries/grpc/default.nix
@@ -82,7 +82,7 @@ stdenv.mkDerivation rec {
     export LD_LIBRARY_PATH=$(pwd)''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH
   '';
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=unknown-warning-option"
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=unknown-warning-option"
     + lib.optionalString stdenv.isAarch64 "-Wno-error=format-security";
 
   enableParallelBuilds = true;
diff --git a/pkgs/development/libraries/gsl/default.nix b/pkgs/development/libraries/gsl/default.nix
index 590a4508c9b..c9559476eff 100644
--- a/pkgs/development/libraries/gsl/default.nix
+++ b/pkgs/development/libraries/gsl/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   '';
 
   # do not let -march=skylake to enable FMA (https://lists.gnu.org/archive/html/bug-gsl/2011-11/msg00019.html)
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isx86_64 "-mno-fma";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isx86_64 "-mno-fma";
 
   # https://lists.gnu.org/archive/html/bug-gsl/2015-11/msg00012.html
   doCheck = stdenv.hostPlatform.system != "i686-linux";
diff --git a/pkgs/development/libraries/gsmlib/default.nix b/pkgs/development/libraries/gsmlib/default.nix
index 190fc137479..5b3672650f1 100644
--- a/pkgs/development/libraries/gsmlib/default.nix
+++ b/pkgs/development/libraries/gsmlib/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-std=c++14"
   ];
diff --git a/pkgs/development/libraries/gtk-frdp/default.nix b/pkgs/development/libraries/gtk-frdp/default.nix
index acd2cae6abf..5a42b66ed9d 100644
--- a/pkgs/development/libraries/gtk-frdp/default.nix
+++ b/pkgs/development/libraries/gtk-frdp/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     };
   };
 
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.isDarwin [
+  env.NIX_CFLAGS_COMPILE = lib.optionals stdenv.isDarwin [
     "-DTARGET_OS_IPHONE=0"
     "-DTARGET_OS_WATCH=0"
   ];
diff --git a/pkgs/development/libraries/gtk/3.x.nix b/pkgs/development/libraries/gtk/3.x.nix
index 6737cdd7e41..af81a55fcaa 100644
--- a/pkgs/development/libraries/gtk/3.x.nix
+++ b/pkgs/development/libraries/gtk/3.x.nix
@@ -171,7 +171,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # These are the defines that'd you'd get with --enable-debug=minimum (default).
   # See: https://developer.gnome.org/gtk3/stable/gtk-building.html#extra-configuration-options
-  NIX_CFLAGS_COMPILE = "-DG_ENABLE_DEBUG -DG_DISABLE_CAST_CHECKS";
+  env.NIX_CFLAGS_COMPILE = "-DG_ENABLE_DEBUG -DG_DISABLE_CAST_CHECKS";
 
   postPatch = ''
     # See https://github.com/NixOS/nixpkgs/issues/132259
diff --git a/pkgs/development/libraries/gtk/4.x.nix b/pkgs/development/libraries/gtk/4.x.nix
index 11d00dfa1c0..764dc36d7db 100644
--- a/pkgs/development/libraries/gtk/4.x.nix
+++ b/pkgs/development/libraries/gtk/4.x.nix
@@ -175,7 +175,7 @@ stdenv.mkDerivation rec {
 
   # These are the defines that'd you'd get with --enable-debug=minimum (default).
   # See: https://developer.gnome.org/gtk3/stable/gtk-building.html#extra-configuration-options
-  NIX_CFLAGS_COMPILE = "-DG_ENABLE_DEBUG -DG_DISABLE_CAST_CHECKS";
+  env.NIX_CFLAGS_COMPILE = "-DG_ENABLE_DEBUG -DG_DISABLE_CAST_CHECKS";
 
   postPatch = ''
     files=(
diff --git a/pkgs/development/libraries/http-parser/default.nix b/pkgs/development/libraries/http-parser/default.nix
index 146262a4258..dd1ea3559d7 100644
--- a/pkgs/development/libraries/http-parser/default.nix
+++ b/pkgs/development/libraries/http-parser/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "1vda4dp75pjf5fcph73sy0ifm3xrssrmf927qd1x8g3q46z0cv6c";
   };
 
-  NIX_CFLAGS_COMPILE = "-Wno-error";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error";
   patches = [
     ./build-shared.patch
   ] ++ lib.optionals stdenv.isAarch32 [
diff --git a/pkgs/development/libraries/intel-media-driver/default.nix b/pkgs/development/libraries/intel-media-driver/default.nix
index 7b948943345..17cdeb50b6b 100644
--- a/pkgs/development/libraries/intel-media-driver/default.nix
+++ b/pkgs/development/libraries/intel-media-driver/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     "-DMEDIA_BUILD_FATAL_WARNINGS=OFF"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.system == "i686-linux") "-D_FILE_OFFSET_BITS=64";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.hostPlatform.system == "i686-linux") "-D_FILE_OFFSET_BITS=64";
 
   nativeBuildInputs = [ cmake pkg-config ];
 
diff --git a/pkgs/development/libraries/iqueue/default.nix b/pkgs/development/libraries/iqueue/default.nix
index 33570c8aea5..8803628f675 100644
--- a/pkgs/development/libraries/iqueue/default.nix
+++ b/pkgs/development/libraries/iqueue/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libbsd microsoft_gsl ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=array-parameter"
     "-Wno-error=misleading-indentation"
diff --git a/pkgs/development/libraries/jemalloc/default.nix b/pkgs/development/libraries/jemalloc/default.nix
index 420f414da6f..18c492dc93b 100644
--- a/pkgs/development/libraries/jemalloc/default.nix
+++ b/pkgs/development/libraries/jemalloc/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     ++ lib.optional (stdenv.isDarwin && stdenv.isx86_64) "--with-lg-vaddr=48"
   ;
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-error=array-bounds";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-error=array-bounds";
 
   doCheck = true;
 
diff --git a/pkgs/development/libraries/leatherman/default.nix b/pkgs/development/libraries/leatherman/default.nix
index 4b84584d53e..4bae576bd18 100644
--- a/pkgs/development/libraries/leatherman/default.nix
+++ b/pkgs/development/libraries/leatherman/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [ "-DLEATHERMAN_ENABLE_TESTING=OFF" ];
 
-  NIX_CFLAGS_COMPILE = "-Wno-error";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ boost curl ruby ];
diff --git a/pkgs/development/libraries/libagar/libagar_test.nix b/pkgs/development/libraries/libagar/libagar_test.nix
index 19efea263c0..96574ca1188 100644
--- a/pkgs/development/libraries/libagar/libagar_test.nix
+++ b/pkgs/development/libraries/libagar/libagar_test.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
   #   ld: textdlg.o:(.bss+0x0): multiple definition of `someString';
   #     configsettings.o:(.bss+0x0): first defined here
   # TODO: the workaround can be removed once nixpkgs updates to 1.6.0.
-  NIX_CFLAGS_COMPILE = "-fcommon";
+  env.NIX_CFLAGS_COMPILE = "-fcommon";
 
   preConfigure = ''
     substituteInPlace configure.in \
diff --git a/pkgs/development/libraries/libbladeRF/default.nix b/pkgs/development/libraries/libbladeRF/default.nix
index 3363ffa3504..2f453a38b8d 100644
--- a/pkgs/development/libraries/libbladeRF/default.nix
+++ b/pkgs/development/libraries/libbladeRF/default.nix
@@ -46,7 +46,7 @@ in stdenv.mkDerivation rec {
     "-DBLADERF_GROUP=bladerf"
   ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=array-bounds"
   ];
diff --git a/pkgs/development/libraries/libcaca/default.nix b/pkgs/development/libraries/libcaca/default.nix
index 71a800520ad..26d8c79443a 100644
--- a/pkgs/development/libraries/libcaca/default.nix
+++ b/pkgs/development/libraries/libcaca/default.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     (if x11Support then "--enable-x11" else "--disable-x11")
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString (!x11Support) "-DX_DISPLAY_MISSING";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (!x11Support) "-DX_DISPLAY_MISSING";
 
   postInstall = ''
     mkdir -p $dev/bin
diff --git a/pkgs/development/libraries/libcamera/default.nix b/pkgs/development/libraries/libcamera/default.nix
index 11c8ce9e097..b2ac4fa0aaf 100644
--- a/pkgs/development/libraries/libcamera/default.nix
+++ b/pkgs/development/libraries/libcamera/default.nix
@@ -85,7 +85,7 @@ stdenv.mkDerivation rec {
     ];
 
   # Fixes error on a deprecated declaration
-  NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations";
 
   # Silence fontconfig warnings about missing config
   FONTCONFIG_FILE = makeFontsConf { fontDirectories = []; };
diff --git a/pkgs/development/libraries/libchop/default.nix b/pkgs/development/libraries/libchop/default.nix
index 753911936ee..ce113106ce5 100644
--- a/pkgs/development/libraries/libchop/default.nix
+++ b/pkgs/development/libraries/libchop/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config gperf rpcsvc-proto ];
 
-  NIX_CFLAGS_COMPILE = toString [ "-I${libtirpc.dev}/include/tirpc" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-I${libtirpc.dev}/include/tirpc" ];
   NIX_LDFLAGS = [ "-ltirpc" ];
 
   buildInputs =
diff --git a/pkgs/development/libraries/libcli/default.nix b/pkgs/development/libraries/libcli/default.nix
index 04bea476d70..982d34f1bdc 100644
--- a/pkgs/development/libraries/libcli/default.nix
+++ b/pkgs/development/libraries/libcli/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" "AR=${stdenv.cc.targetPrefix}ar" "PREFIX=$(out)" ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=address"
   ];
diff --git a/pkgs/development/libraries/libclxclient/default.nix b/pkgs/development/libraries/libclxclient/default.nix
index 0d39a5e55b2..40f259677ff 100644
--- a/pkgs/development/libraries/libclxclient/default.nix
+++ b/pkgs/development/libraries/libclxclient/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config ];
 
-  NIX_CFLAGS_COMPILE = "-I${xorg.xorgproto}/include -I${libXft.dev}/include";
+  env.NIX_CFLAGS_COMPILE = "-I${xorg.xorgproto}/include -I${libXft.dev}/include";
 
   patchPhase = ''
     cd source
diff --git a/pkgs/development/libraries/libcutl/default.nix b/pkgs/development/libraries/libcutl/default.nix
index 110e12cf5ef..e87dc064402 100644
--- a/pkgs/development/libraries/libcutl/default.nix
+++ b/pkgs/development/libraries/libcutl/default.nix
@@ -28,5 +28,5 @@ stdenv.mkDerivation rec {
   buildInputs = [ xercesc ];
   enableParallelBuilding = true;
 
-  NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
 }
diff --git a/pkgs/development/libraries/libdynd/default.nix b/pkgs/development/libraries/libdynd/default.nix
index 6018e00f944..8746ea42882 100644
--- a/pkgs/development/libraries/libdynd/default.nix
+++ b/pkgs/development/libraries/libdynd/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
     "-DDYND_BUILD_BENCHMARKS=OFF"
   ];
 
-  NIX_CFLAGS_COMPILE = builtins.toString [
+  env.NIX_CFLAGS_COMPILE = builtins.toString [
     # added to fix build with gcc7+
     "-Wno-error=implicit-fallthrough"
     "-Wno-error=nonnull"
diff --git a/pkgs/development/libraries/libe-book/default.nix b/pkgs/development/libraries/libe-book/default.nix
index b3a1cab066e..42a3e1722b9 100644
--- a/pkgs/development/libraries/libe-book/default.nix
+++ b/pkgs/development/libraries/libe-book/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   postPatch = ''
     sed -i 's,^CPPFLAGS.*,\0 -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED,' src/lib/Makefile.in
   '';
-  NIX_CFLAGS_COMPILE = "-Wno-error=unused-function";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=unused-function";
   meta = with lib; {
     description = "Library for import of reflowable e-book formats";
     license = licenses.lgpl21Plus;
diff --git a/pkgs/development/libraries/libepoxy/default.nix b/pkgs/development/libraries/libepoxy/default.nix
index 8b35097778d..c793df16708 100644
--- a/pkgs/development/libraries/libepoxy/default.nix
+++ b/pkgs/development/libraries/libepoxy/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
     "-Dx11=${lib.boolToString x11Support}"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString x11Support ''-DLIBGL_PATH="${getLib libGL}/lib"'';
+  env.NIX_CFLAGS_COMPILE = lib.optionalString x11Support ''-DLIBGL_PATH="${getLib libGL}/lib"'';
 
   # cgl_core and cgl_epoxy_api fail in darwin sandbox and on Hydra (because it's headless?)
   preCheck = lib.optionalString stdenv.isDarwin ''
diff --git a/pkgs/development/libraries/libfaketime/default.nix b/pkgs/development/libraries/libfaketime/default.nix
index e58c74f2c67..f44702582f2 100644
--- a/pkgs/development/libraries/libfaketime/default.nix
+++ b/pkgs/development/libraries/libfaketime/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   PREFIX = placeholder "out";
   LIBDIRNAME = "/lib";
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=cast-function-type -Wno-error=format-truncation";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=cast-function-type -Wno-error=format-truncation";
 
   nativeCheckInputs = [ perl ];
 
diff --git a/pkgs/development/libraries/libfpx/default.nix b/pkgs/development/libraries/libfpx/default.nix
index 963c93ffc59..5c77e0139e8 100644
--- a/pkgs/development/libraries/libfpx/default.nix
+++ b/pkgs/development/libraries/libfpx/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   # Darwin gets misdetected as Windows without this
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D__unix";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D__unix";
 
   patches = [
     (fetchpatch {
diff --git a/pkgs/development/libraries/libgaminggear/default.nix b/pkgs/development/libraries/libgaminggear/default.nix
index c8bcddbe788..c90d47dff50 100644
--- a/pkgs/development/libraries/libgaminggear/default.nix
+++ b/pkgs/development/libraries/libgaminggear/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   ];
 
   # https://sourceforge.net/p/libgaminggear/discussion/general/thread/b43a776b3a/
-  NIX_CFLAGS_COMPILE = toString [ "-I${harfbuzz.dev}/include/harfbuzz" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-I${harfbuzz.dev}/include/harfbuzz" ];
 
   postFixup = ''
     moveToOutput bin "$bin"
diff --git a/pkgs/development/libraries/libglvnd/default.nix b/pkgs/development/libraries/libglvnd/default.nix
index 0b983e6edf4..4047c7bbefd 100644
--- a/pkgs/development/libraries/libglvnd/default.nix
+++ b/pkgs/development/libraries/libglvnd/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
       --replace "-Xlinker --version-script=$(VERSION_SCRIPT)" "-Xlinker"
   '';
 
-  NIX_CFLAGS_COMPILE = toString ([
+  env.NIX_CFLAGS_COMPILE = toString ([
     "-UDEFAULT_EGL_VENDOR_CONFIG_DIRS"
     # FHS paths are added so that non-NixOS applications can find vendor files.
     "-DDEFAULT_EGL_VENDOR_CONFIG_DIRS=\"${addOpenGLRunpath.driverLink}/share/glvnd/egl_vendor.d:/etc/glvnd/egl_vendor.d:/usr/share/glvnd/egl_vendor.d\""
diff --git a/pkgs/development/libraries/libicns/default.nix b/pkgs/development/libraries/libicns/default.nix
index 21ef0df743c..6dd6654b35a 100644
--- a/pkgs/development/libraries/libicns/default.nix
+++ b/pkgs/development/libraries/libicns/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ libpng openjpeg ];
-  NIX_CFLAGS_COMPILE = toString [ "-I${openjpeg.dev}/include/${openjpeg.incDir}" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-I${openjpeg.dev}/include/${openjpeg.incDir}" ];
 
   meta = with lib; {
     description = "Library for manipulation of the Mac OS icns resource format";
diff --git a/pkgs/development/libraries/libipfix/default.nix b/pkgs/development/libraries/libipfix/default.nix
index ce993210285..e62c456dd4a 100644
--- a/pkgs/development/libraries/libipfix/default.nix
+++ b/pkgs/development/libraries/libipfix/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   #     `ht_globals'; collector.o:/build/libipfix_110209/collector/../libmisc/misc.h:111: first defined here
   # TODO: drop the workaround when fix ix released:
   #   https://sourceforge.net/p/libipfix/code/ci/a501612c6b8ac6f2df16b366f7a92211382bae6b/
-  NIX_CFLAGS_COMPILE = "-fcommon";
+  env.NIX_CFLAGS_COMPILE = "-fcommon";
 
   meta = with lib; {
     homepage = "https://libipfix.sourceforge.net/";
diff --git a/pkgs/development/libraries/libiscsi/default.nix b/pkgs/development/libraries/libiscsi/default.nix
index 3cc2e0eee8c..2c9a232b315 100644
--- a/pkgs/development/libraries/libiscsi/default.nix
+++ b/pkgs/development/libraries/libiscsi/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
 
   # This problem is gone on libiscsi master.
-  NIX_CFLAGS_COMPILE =
+  env.NIX_CFLAGS_COMPILE =
     lib.optional stdenv.hostPlatform.is32bit "-Wno-error=sign-compare";
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/libjson-rpc-cpp/default.nix b/pkgs/development/libraries/libjson-rpc-cpp/default.nix
index e2dd30fc616..8e80b9bd840 100644
--- a/pkgs/development/libraries/libjson-rpc-cpp/default.nix
+++ b/pkgs/development/libraries/libjson-rpc-cpp/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     rev = "v${version}";
   };
 
-  NIX_CFLAGS_COMPILE = "-I${catch2}/include/catch2";
+  env.NIX_CFLAGS_COMPILE = "-I${catch2}/include/catch2";
 
   patches = [
     (fetchpatch {
diff --git a/pkgs/development/libraries/libjson/default.nix b/pkgs/development/libraries/libjson/default.nix
index 74ba19541a2..30e36e96585 100644
--- a/pkgs/development/libraries/libjson/default.nix
+++ b/pkgs/development/libraries/libjson/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   patches = [ ./install-fix.patch ];
   nativeBuildInputs = [ unzip ];
   makeFlags = [ "prefix=$(out)" ];
-  NIX_CFLAGS_COMPILE = toString [ "-std=c++11" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-std=c++11" ];
   preInstall = "mkdir -p $out/lib";
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/liblastfm/default.nix b/pkgs/development/libraries/liblastfm/default.nix
index 68658d20ba6..cfd56b5091e 100644
--- a/pkgs/development/libraries/liblastfm/default.nix
+++ b/pkgs/development/libraries/liblastfm/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ fftwSinglePrec libsamplerate qtbase ]
     ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.SystemConfiguration;
 
-  NIX_CFLAGS_COMPILE =
+  env.NIX_CFLAGS_COMPILE =
     lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11") [
       "-std=c++11"
     ];
diff --git a/pkgs/development/libraries/libmemcached/default.nix b/pkgs/development/libraries/libmemcached/default.nix
index 099dab139c4..07fe854c777 100644
--- a/pkgs/development/libraries/libmemcached/default.nix
+++ b/pkgs/development/libraries/libmemcached/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libevent ];
   propagatedBuildInputs = [ cyrus_sasl ];
 
-  NIX_CFLAGS_COMPILE = "-fpermissive";
+  env.NIX_CFLAGS_COMPILE = "-fpermissive";
 
   meta = with lib; {
     homepage = "https://libmemcached.org";
diff --git a/pkgs/development/libraries/libomxil-bellagio/default.nix b/pkgs/development/libraries/libomxil-bellagio/default.nix
index 67d9ec29b20..3cfec00b132 100644
--- a/pkgs/development/libraries/libomxil-bellagio/default.nix
+++ b/pkgs/development/libraries/libomxil-bellagio/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   doCheck = false; # fails
 
-  NIX_CFLAGS_COMPILE =
+  env.NIX_CFLAGS_COMPILE =
     if stdenv.cc.isGNU then "-Wno-error=array-bounds -Wno-error=stringop-overflow=8"
     else "-Wno-error=absolute-value -Wno-error=enum-conversion -Wno-error=logical-not-parentheses -Wno-error=non-literal-null-conversion";
 
diff --git a/pkgs/development/libraries/liboping/default.nix b/pkgs/development/libraries/liboping/default.nix
index 9a44e84b136..118f283a0f9 100644
--- a/pkgs/development/libraries/liboping/default.nix
+++ b/pkgs/development/libraries/liboping/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString
+  env.NIX_CFLAGS_COMPILE = lib.optionalString
     stdenv.cc.isGNU "-Wno-error=format-truncation";
 
   buildInputs = [ ncurses perl ];
diff --git a/pkgs/development/libraries/libpfm/default.nix b/pkgs/development/libraries/libpfm/default.nix
index 3006efe9b29..281aff548c8 100644
--- a/pkgs/development/libraries/libpfm/default.nix
+++ b/pkgs/development/libraries/libpfm/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (rec {
     "SYS=${stdenv.hostPlatform.uname.system}"
   ];
 
-  NIX_CFLAGS_COMPILE = "-Wno-error";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error";
 
   meta = with lib; {
     description = "Helper library to program the performance monitoring events";
diff --git a/pkgs/development/libraries/libpulsar/default.nix b/pkgs/development/libraries/libpulsar/default.nix
index 11a146c62b9..d16c6f7f183 100644
--- a/pkgs/development/libraries/libpulsar/default.nix
+++ b/pkgs/development/libraries/libpulsar/default.nix
@@ -69,7 +69,7 @@ stdenv.mkDerivation rec {
     ++ defaultOptionals;
 
   # Needed for GCC on Linux
-  NIX_CFLAGS_COMPILE = toString [ "-Wno-error=return-type" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-Wno-error=return-type" ];
 
   cmakeFlags = [
     "-DBUILD_TESTS=${enableCmakeFeature gtestSupport}"
diff --git a/pkgs/development/libraries/librsb/default.nix b/pkgs/development/libraries/librsb/default.nix
index a656d6a3389..d9dc209a713 100644
--- a/pkgs/development/libraries/librsb/default.nix
+++ b/pkgs/development/libraries/librsb/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Ensure C/Fortran code is position-independent.
-  NIX_CFLAGS_COMPILE = toString [ "-fPIC" "-Ofast" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-fPIC" "-Ofast" ];
   FCFLAGS = [ "-fPIC" "-Ofast" ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/libraries/libsoundio/default.nix b/pkgs/development/libraries/libsoundio/default.nix
index 438c278bfad..b7de8bf04e8 100644
--- a/pkgs/development/libraries/libsoundio/default.nix
+++ b/pkgs/development/libraries/libsoundio/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     "-DBUILD_TESTS=OFF"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-strict-prototypes";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-strict-prototypes";
 
   meta = with lib; {
     description = "Cross platform audio input and output";
diff --git a/pkgs/development/libraries/libsoup/default.nix b/pkgs/development/libraries/libsoup/default.nix
index 91b4a42d54e..05bf4b15523 100644
--- a/pkgs/development/libraries/libsoup/default.nix
+++ b/pkgs/development/libraries/libsoup/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     "-Dsysprof=disabled"
   ];
 
-  NIX_CFLAGS_COMPILE = "-lpthread";
+  env.NIX_CFLAGS_COMPILE = "-lpthread";
 
   doCheck = false; # ERROR:../tests/socket-test.c:37:do_unconnected_socket_test: assertion failed (res == SOUP_STATUS_OK): (2 == 200)
 
diff --git a/pkgs/development/libraries/libtomcrypt/default.nix b/pkgs/development/libraries/libtomcrypt/default.nix
index c4dbc11c76c..d7678bc4c8d 100644
--- a/pkgs/development/libraries/libtomcrypt/default.nix
+++ b/pkgs/development/libraries/libtomcrypt/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   # Fixes a build failure on aarch64-darwin. Define for all Darwin targets for when x86_64-darwin
   # upgrades to a newer SDK.
-  NIX_CFLAGS_COMPILE = lib.optional stdenv.isDarwin "-DTARGET_OS_IPHONE=0";
+  env.NIX_CFLAGS_COMPILE = lib.optional stdenv.isDarwin "-DTARGET_OS_IPHONE=0";
 
   patches = [
     (fetchpatch {
diff --git a/pkgs/development/libraries/libtommath/default.nix b/pkgs/development/libraries/libtommath/default.nix
index 827e78c8197..b6e129722a2 100644
--- a/pkgs/development/libraries/libtommath/default.nix
+++ b/pkgs/development/libraries/libtommath/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   makefile = "makefile.shared";
 
-  NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-DTARGET_OS_IPHONE=0";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-DTARGET_OS_IPHONE=0";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/libunique/default.nix b/pkgs/development/libraries/libunique/default.nix
index 82f71f59070..13dc13e5e96 100644
--- a/pkgs/development/libraries/libunique/default.nix
+++ b/pkgs/development/libraries/libunique/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   '';
 
   # glib-2.62 deprecations
-  NIX_CFLAGS_COMPILE = "-DGLIB_DISABLE_DEPRECATION_WARNINGS";
+  env.NIX_CFLAGS_COMPILE = "-DGLIB_DISABLE_DEPRECATION_WARNINGS";
 
   # Patches from Gentoo portage
   patches = [
diff --git a/pkgs/development/libraries/libvirt-glib/default.nix b/pkgs/development/libraries/libvirt-glib/default.nix
index 8c8ce4f8860..6a8cb5e2dba 100644
--- a/pkgs/development/libraries/libvirt-glib/default.nix
+++ b/pkgs/development/libraries/libvirt-glib/default.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
   ];
 
   # https://gitlab.com/libvirt/libvirt-glib/-/issues/4
-  NIX_CFLAGS_COMPILE = toString [ "-Wno-error=pointer-sign" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-Wno-error=pointer-sign" ];
 
   meta = with lib; {
     description = "Library for working with virtual machines";
diff --git a/pkgs/development/libraries/libwhereami/default.nix b/pkgs/development/libraries/libwhereami/default.nix
index 11950c63486..455e59d8971 100644
--- a/pkgs/development/libraries/libwhereami/default.nix
+++ b/pkgs/development/libraries/libwhereami/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     owner = "puppetlabs";
   };
 
-  NIX_CFLAGS_COMPILE = "-Wno-error";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error";
 
   nativeBuildInputs = [ cmake ];
 
diff --git a/pkgs/development/libraries/libwps/default.nix b/pkgs/development/libraries/libwps/default.nix
index 597370ad0e5..76f2d396960 100644
--- a/pkgs/development/libraries/libwps/default.nix
+++ b/pkgs/development/libraries/libwps/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ boost librevenge zlib ];
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=implicit-fallthrough";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=implicit-fallthrough";
 
   meta = with lib; {
     homepage = "https://libwps.sourceforge.net/";
diff --git a/pkgs/development/libraries/libxkbcommon/libxkbcommon_7.nix b/pkgs/development/libraries/libxkbcommon/libxkbcommon_7.nix
index 5095b06b9cd..6b375978a4b 100644
--- a/pkgs/development/libraries/libxkbcommon/libxkbcommon_7.nix
+++ b/pkgs/development/libraries/libxkbcommon/libxkbcommon_7.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     "--with-x-locale-root=${libX11.out}/share/X11/locale"
   ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=array-bounds"
   ];
diff --git a/pkgs/development/libraries/loki/default.nix b/pkgs/development/libraries/loki/default.nix
index bb275b38b8c..55be8f9451d 100644
--- a/pkgs/development/libraries/loki/default.nix
+++ b/pkgs/development/libraries/loki/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     make build-shared
   '';
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-std=c++11"
   ];
 
diff --git a/pkgs/development/libraries/mapbox-gl-native/default.nix b/pkgs/development/libraries/mapbox-gl-native/default.nix
index 47b9ba63fc2..7b6bf1ddef0 100644
--- a/pkgs/development/libraries/mapbox-gl-native/default.nix
+++ b/pkgs/development/libraries/mapbox-gl-native/default.nix
@@ -50,7 +50,7 @@ mkDerivation rec {
     "-DMBGL_WITH_QT_LIB_ONLY=ON"
     "-DMBGL_WITH_QT_HEADLESS=OFF"
   ];
-  NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations -Wno-error=type-limits";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations -Wno-error=type-limits";
 
   meta = with lib; {
     description = "Interactive, thoroughly customizable maps in native Android, iOS, macOS, Node.js, and Qt applications, powered by vector tiles and OpenGL";
diff --git a/pkgs/development/libraries/maplibre-gl-native/default.nix b/pkgs/development/libraries/maplibre-gl-native/default.nix
index 8d6c0664ca1..6d55d4de58f 100644
--- a/pkgs/development/libraries/maplibre-gl-native/default.nix
+++ b/pkgs/development/libraries/maplibre-gl-native/default.nix
@@ -56,7 +56,7 @@ mkDerivation rec {
     "-DMBGL_WITH_QT_HEADLESS=OFF"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "12") [
+  env.NIX_CFLAGS_COMPILE = lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "12") [
     # Needed with GCC 12 but problematic with some old GCCs
     "-Wno-error=use-after-free"
   ];
diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index 52633a6d216..72f9844e977 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -323,7 +323,7 @@ self = stdenv.mkDerivation {
     done
   '';
 
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.isDarwin [ "-fno-common" ] ++ lib.optionals enableOpenCL [
+  env.NIX_CFLAGS_COMPILE = lib.optionals stdenv.isDarwin [ "-fno-common" ] ++ lib.optionals enableOpenCL [
     "-UPIPE_SEARCH_DIR"
     "-DPIPE_SEARCH_DIR=\"${placeholder "opencl"}/lib/gallium-pipe\""
   ];
diff --git a/pkgs/development/libraries/mp4v2/default.nix b/pkgs/development/libraries/mp4v2/default.nix
index b00b3517313..b9b0589bd80 100644
--- a/pkgs/development/libraries/mp4v2/default.nix
+++ b/pkgs/development/libraries/mp4v2/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-OP+oVTH9pqYfHtYL1Kjrs1qey/J40ijLi5Gu8GJnvSY=";
   };
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=narrowing";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=narrowing";
 
   # `faac' expects `mp4.h'.
   postInstall = "ln -s mp4v2/mp4v2.h $out/include/mp4.h";
diff --git a/pkgs/development/libraries/mps/default.nix b/pkgs/development/libraries/mps/default.nix
index f990d4de7d6..6298a1dfef6 100644
--- a/pkgs/development/libraries/mps/default.nix
+++ b/pkgs/development/libraries/mps/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ sqlite ];
 
   # needed for 1.116.0 to build with gcc7
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-implicit-fallthrough"
     "-Wno-error=clobbered"
     "-Wno-error=cast-function-type"
diff --git a/pkgs/development/libraries/nss/generic.nix b/pkgs/development/libraries/nss/generic.nix
index 7384413d771..a9382294ebe 100644
--- a/pkgs/development/libraries/nss/generic.nix
+++ b/pkgs/development/libraries/nss/generic.nix
@@ -103,7 +103,7 @@ stdenv.mkDerivation rec {
       runHook postBuild
     '';
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error"
     "-DNIX_NSS_LIBDIR=\"${placeholder "out"}/lib/\""
   ] ++ lib.optionals stdenv.hostPlatform.is64bit [
diff --git a/pkgs/development/libraries/ntrack/default.nix b/pkgs/development/libraries/ntrack/default.nix
index a10434d90b4..3d8f057fc80 100644
--- a/pkgs/development/libraries/ntrack/default.nix
+++ b/pkgs/development/libraries/ntrack/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config python3 ];
 
   # error: ISO C does not support '__FUNCTION__' predefined identifier [-Werror=pedantic]
-  NIX_CFLAGS_COMPILE = "-Wno-error";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error";
 
   configureFlags = [ "--without-gobject" "CFLAGS=--std=gnu99" ];
 
diff --git a/pkgs/development/libraries/octomap/default.nix b/pkgs/development/libraries/octomap/default.nix
index 8326fe53da7..40e81e195aa 100644
--- a/pkgs/development/libraries/octomap/default.nix
+++ b/pkgs/development/libraries/octomap/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=deprecated-declarations"
   ];
diff --git a/pkgs/development/libraries/opae/default.nix b/pkgs/development/libraries/opae/default.nix
index e28d8763b33..975e005530e 100644
--- a/pkgs/development/libraries/opae/default.nix
+++ b/pkgs/development/libraries/opae/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   doCheck = false;
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=format-truncation"
     "-Wno-error=address-of-packed-member"
     "-Wno-array-bounds"
diff --git a/pkgs/development/libraries/opencv/3.x.nix b/pkgs/development/libraries/opencv/3.x.nix
index 59a74a66730..e1a13c9fe57 100644
--- a/pkgs/development/libraries/opencv/3.x.nix
+++ b/pkgs/development/libraries/opencv/3.x.nix
@@ -216,7 +216,7 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ cmake pkg-config unzip ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString enableEXR "-I${ilmbase.dev}/include/OpenEXR";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString enableEXR "-I${ilmbase.dev}/include/OpenEXR";
 
   # Configure can't find the library without this.
   OpenBLAS_HOME = lib.optionalString enableOpenblas openblas;
diff --git a/pkgs/development/libraries/opencv/4.x.nix b/pkgs/development/libraries/opencv/4.x.nix
index 4a9af9a5388..ac021c2b610 100644
--- a/pkgs/development/libraries/opencv/4.x.nix
+++ b/pkgs/development/libraries/opencv/4.x.nix
@@ -307,7 +307,7 @@ stdenv.mkDerivation {
     pythonPackages.setuptools
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString enableEXR "-I${ilmbase.dev}/include/OpenEXR";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString enableEXR "-I${ilmbase.dev}/include/OpenEXR";
 
   # Configure can't find the library without this.
   OpenBLAS_HOME = lib.optionalString withOpenblas openblas_.dev;
diff --git a/pkgs/development/libraries/opencv/default.nix b/pkgs/development/libraries/opencv/default.nix
index 73b0874dde5..059dc69df12 100644
--- a/pkgs/development/libraries/opencv/default.nix
+++ b/pkgs/development/libraries/opencv/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config unzip ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString enableEXR "-I${ilmbase.dev}/include/OpenEXR";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString enableEXR "-I${ilmbase.dev}/include/OpenEXR";
 
   cmakeFlags = [
     (opencvFlag "TIFF" enableTIFF)
diff --git a/pkgs/development/libraries/opendbx/default.nix b/pkgs/development/libraries/opendbx/default.nix
index f96032825e1..b7a4a34390d 100644
--- a/pkgs/development/libraries/opendbx/default.nix
+++ b/pkgs/development/libraries/opendbx/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ readline libmysqlclient postgresql sqlite ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-std=c++14"
   ];
diff --git a/pkgs/development/libraries/openldap/default.nix b/pkgs/development/libraries/openldap/default.nix
index 7b79f7d40e0..c89a8eb5db7 100644
--- a/pkgs/development/libraries/openldap/default.nix
+++ b/pkgs/development/libraries/openldap/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     "ac_cv_func_memcmp_working=yes"
   ] ++ lib.optional stdenv.isFreeBSD "--with-pic";
 
-  NIX_CFLAGS_COMPILE = toString [ "-DLDAPI_SOCK=\"/run/openldap/ldapi\"" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-DLDAPI_SOCK=\"/run/openldap/ldapi\"" ];
 
   makeFlags= [
     "CC=${stdenv.cc.targetPrefix}cc"
diff --git a/pkgs/development/libraries/opensaml-cpp/default.nix b/pkgs/development/libraries/opensaml-cpp/default.nix
index 28af08b3d43..28a8ab838c5 100644
--- a/pkgs/development/libraries/opensaml-cpp/default.nix
+++ b/pkgs/development/libraries/opensaml-cpp/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--with-xmltooling=${xml-tooling-c}" ];
 
-  NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/ortp/default.nix b/pkgs/development/libraries/ortp/default.nix
index 4a0edf08a7e..cf75de2bf6f 100644
--- a/pkgs/development/libraries/ortp/default.nix
+++ b/pkgs/development/libraries/ortp/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   # Do not build static libraries
   cmakeFlags = [ "-DENABLE_STATIC=NO" ];
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=stringop-truncation";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=stringop-truncation";
 
   buildInputs = [ bctoolbox ];
   nativeBuildInputs = [ cmake ];
diff --git a/pkgs/development/libraries/phonon/backends/gstreamer.nix b/pkgs/development/libraries/phonon/backends/gstreamer.nix
index 3ef63aa2c35..e0614c73741 100644
--- a/pkgs/development/libraries/phonon/backends/gstreamer.nix
+++ b/pkgs/development/libraries/phonon/backends/gstreamer.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   dontWrapQtApps = true;
 
-  NIX_CFLAGS_COMPILE =
+  env.NIX_CFLAGS_COMPILE =
     let gstPluginPaths =
           lib.makeSearchPathOutput "lib" "/lib/gstreamer-1.0"
           (with gst_all_1; [
diff --git a/pkgs/development/libraries/phonon/default.nix b/pkgs/development/libraries/phonon/default.nix
index 4966e379aec..48f4729ba16 100644
--- a/pkgs/development/libraries/phonon/default.nix
+++ b/pkgs/development/libraries/phonon/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" ];
 
-  NIX_CFLAGS_COMPILE = "-fPIC";
+  env.NIX_CFLAGS_COMPILE = "-fPIC";
 
   cmakeFlags = [
     "-DCMAKE_BUILD_TYPE=${if debug then "Debug" else "Release"}"
diff --git a/pkgs/development/libraries/physics/cernlib/default.nix b/pkgs/development/libraries/physics/cernlib/default.nix
index 8eae6fcaad5..b589524113d 100644
--- a/pkgs/development/libraries/physics/cernlib/default.nix
+++ b/pkgs/development/libraries/physics/cernlib/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
   # Workaround build failure on -fno-common toolchains:
   # ld: libpacklib.a(kedit.o):kuip/klink1.h:11: multiple definition of `klnkaddr';
   #   libzftplib.a(zftpcdf.o):zftp/zftpcdf.c:155: first defined here
-  NIX_CFLAGS_COMPILE = "-fcommon";
+  env.NIX_CFLAGS_COMPILE = "-fcommon";
 
   makeFlags = [
     "FORTRANOPTIONS=$(FFLAGS)"
diff --git a/pkgs/development/libraries/physics/nlojet/default.nix b/pkgs/development/libraries/physics/nlojet/default.nix
index e7ecefb59c2..c477f98ae7b 100644
--- a/pkgs/development/libraries/physics/nlojet/default.nix
+++ b/pkgs/development/libraries/physics/nlojet/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   ];
 
   # error: no member named 'finite' in the global namespace; did you mean simply 'finite'?
-  NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dfinite=isfinite";
 
   meta = {
     homepage    = "http://www.desy.de/~znagy/Site/NLOJet++.html";
diff --git a/pkgs/development/libraries/pipewire/0.2.nix b/pkgs/development/libraries/pipewire/0.2.nix
index 1929f59bfa2..cf2448bddfc 100644
--- a/pkgs/development/libraries/pipewire/0.2.nix
+++ b/pkgs/development/libraries/pipewire/0.2.nix
@@ -31,7 +31,7 @@ in stdenv.mkDerivation rec {
   # Workaround build on gcc-10+ and clang11+:
   #  spa/plugins/bluez5/libspa-bluez5.so.p/bluez5-monitor.c.o:(.bss+0x0):
   #    multiple definition of `spa_a2dp_sink_factory'
-  NIX_CFLAGS_COMPILE = toString [ "-fcommon" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-fcommon" ];
 
   mesonFlags = [
     "-Ddocs=true"
diff --git a/pkgs/development/libraries/pmdk/default.nix b/pkgs/development/libraries/pmdk/default.nix
index 1f02bfa0dab..39d2cd519cd 100644
--- a/pkgs/development/libraries/pmdk/default.nix
+++ b/pkgs/development/libraries/pmdk/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   patchPhase = "patchShebangs utils";
 
-  NIX_CFLAGS_COMPILE = "-Wno-error";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error";
 
   installPhase = ''
     make install prefix=$out
diff --git a/pkgs/development/libraries/poly2tri-c/default.nix b/pkgs/development/libraries/poly2tri-c/default.nix
index d2c5f7383ca..a0f08460690 100644
--- a/pkgs/development/libraries/poly2tri-c/default.nix
+++ b/pkgs/development/libraries/poly2tri-c/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     glib
   ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "--std=gnu99"
     "-Wno-error"
   ];
diff --git a/pkgs/development/libraries/portaudio/default.nix b/pkgs/development/libraries/portaudio/default.nix
index 22ff1e450c1..795178c57e8 100644
--- a/pkgs/development/libraries/portaudio/default.nix
+++ b/pkgs/development/libraries/portaudio/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--disable-mac-universal" "--enable-cxx" ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=nullability-inferred-on-nested-type -Wno-error=nullability-completeness-on-arrays -Wno-error=implicit-const-int-float-conversion";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=nullability-inferred-on-nested-type -Wno-error=nullability-completeness-on-arrays -Wno-error=implicit-const-int-float-conversion";
 
   propagatedBuildInputs = lib.optionals stdenv.isDarwin [ AudioUnit AudioToolbox CoreAudio CoreServices Carbon ];
 
diff --git a/pkgs/development/libraries/precice/default.nix b/pkgs/development/libraries/precice/default.nix
index 01ab32577cb..21b94ba4c26 100644
--- a/pkgs/development/libraries/precice/default.nix
+++ b/pkgs/development/libraries/precice/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     "-DPYTHON_INCLUDE_DIR=${python3}/include/${python3.libPrefix}"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.isDarwin [ "-D_GNU_SOURCE" ];
+  env.NIX_CFLAGS_COMPILE = lib.optionals stdenv.isDarwin [ "-D_GNU_SOURCE" ];
 
   nativeBuildInputs = [ cmake gcc ];
   buildInputs = [ boost eigen libxml2 mpi python3 python3.pkgs.numpy ];
diff --git a/pkgs/development/libraries/prime-server/default.nix b/pkgs/development/libraries/prime-server/default.nix
index 61c02736864..946fbb0dff1 100644
--- a/pkgs/development/libraries/prime-server/default.nix
+++ b/pkgs/development/libraries/prime-server/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ curl zeromq czmq libsodium ];
 
   # https://github.com/kevinkreiser/prime_server/issues/95
-  NIX_CFLAGS_COMPILE = toString [ "-Wno-error=unused-variable" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-Wno-error=unused-variable" ];
 
   meta = with lib; {
     description = "Non-blocking (web)server API for distributed computing and SOA based on zeromq";
diff --git a/pkgs/development/libraries/prometheus-client-c/default.nix b/pkgs/development/libraries/prometheus-client-c/default.nix
index 938d16d3776..f9f580c9717 100644
--- a/pkgs/development/libraries/prometheus-client-c/default.nix
+++ b/pkgs/development/libraries/prometheus-client-c/default.nix
@@ -48,7 +48,7 @@ let
       #   ld: CMakeFiles/prom.dir/src/prom_process_stat.c.o:(.bss+0x0): multiple definition of
       #     `prom_process_start_time_seconds'; CMakeFiles/prom.dir/src/prom_collector.c.o:(.bss+0x0): first defined here
       # Should be fixed in 1.2.0 and later: https://github.com/digitalocean/prometheus-client-c/pull/25
-      NIX_CFLAGS_COMPILE = "-fcommon";
+      env.NIX_CFLAGS_COMPILE = "-fcommon";
 
       preConfigure = ''
         cd ${subdir}
diff --git a/pkgs/development/libraries/qoauth/default.nix b/pkgs/development/libraries/qoauth/default.nix
index 2c62ea27d19..51e91499cbd 100644
--- a/pkgs/development/libraries/qoauth/default.nix
+++ b/pkgs/development/libraries/qoauth/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ qtbase qca-qt5 ];
   nativeBuildInputs = [ qmake ];
 
-  NIX_CFLAGS_COMPILE = "-I${qca-qt5}/include/Qca-qt5/QtCrypto";
+  env.NIX_CFLAGS_COMPILE = "-I${qca-qt5}/include/Qca-qt5/QtCrypto";
   NIX_LDFLAGS = "-lqca-qt5";
 
   dontWrapQtApps = true;
diff --git a/pkgs/development/libraries/qt-4.x/4.8/default.nix b/pkgs/development/libraries/qt-4.x/4.8/default.nix
index 816b7503961..68a300ac250 100644
--- a/pkgs/development/libraries/qt-4.x/4.8/default.nix
+++ b/pkgs/development/libraries/qt-4.x/4.8/default.nix
@@ -198,7 +198,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  NIX_CFLAGS_COMPILE = toString (
+  env.NIX_CFLAGS_COMPILE = toString (
     # with gcc7 the warnings blow the log over Hydra's limit
     [ "-Wno-expansion-to-defined" "-Wno-unused-local-typedefs" ]
     ++ lib.optional stdenv.isLinux "-std=gnu++98" # gnu++ in (Obj)C flags is no good on Darwin
diff --git a/pkgs/development/libraries/qt-5/modules/qt3d.nix b/pkgs/development/libraries/qt-5/modules/qt3d.nix
index 918eba5b710..98d11864e45 100644
--- a/pkgs/development/libraries/qt-5/modules/qt3d.nix
+++ b/pkgs/development/libraries/qt-5/modules/qt3d.nix
@@ -5,5 +5,5 @@ qtModule {
   qtInputs = [ qtbase qtdeclarative ];
   outputs = [ "out" "dev" "bin" ];
   # error: use of undeclared identifier 'stat64'
-  NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dstat64=stat";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-Dstat64=stat";
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtbase.nix b/pkgs/development/libraries/qt-5/modules/qtbase.nix
index b718f69610d..ef1192e6b10 100644
--- a/pkgs/development/libraries/qt-5/modules/qtbase.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtbase.nix
@@ -176,7 +176,7 @@ stdenv.mkDerivation (finalAttrs: {
     done
   '';
 
-  NIX_CFLAGS_COMPILE = toString ([
+  env.NIX_CFLAGS_COMPILE = toString ([
     "-Wno-error=sign-compare" # freetype-2.5.4 changed signedness of some struct fields
     ''-DNIXPKGS_QTCOMPOSE="${libX11.out}/share/X11/locale"''
     ''-DLIBRESOLV_SO="${stdenv.cc.libc.out}/lib/libresolv"''
diff --git a/pkgs/development/libraries/qt-5/modules/qtserialport.nix b/pkgs/development/libraries/qt-5/modules/qtserialport.nix
index 89d96eb2912..93f3e130ee7 100644
--- a/pkgs/development/libraries/qt-5/modules/qtserialport.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtserialport.nix
@@ -3,5 +3,5 @@
 qtModule {
   pname = "qtserialport";
   qtInputs = [ qtbase ];
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isLinux "-DNIXPKGS_LIBUDEV=\"${lib.getLib systemd}/lib/libudev\"";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isLinux "-DNIXPKGS_LIBUDEV=\"${lib.getLib systemd}/lib/libudev\"";
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qttools.nix b/pkgs/development/libraries/qt-5/modules/qttools.nix
index 27008f6714e..b8e72b09e88 100644
--- a/pkgs/development/libraries/qt-5/modules/qttools.nix
+++ b/pkgs/development/libraries/qt-5/modules/qttools.nix
@@ -36,7 +36,7 @@ qtModule {
     "bin/macdeployqt"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optional stdenv.isDarwin ''-DNIXPKGS_QMLIMPORTSCANNER="${qtdeclarative.dev}/bin/qmlimportscanner"'';
+  env.NIX_CFLAGS_COMPILE = lib.optional stdenv.isDarwin ''-DNIXPKGS_QMLIMPORTSCANNER="${qtdeclarative.dev}/bin/qmlimportscanner"'';
 
   setupHook = ../hooks/qttools-setup-hook.sh;
 }
diff --git a/pkgs/development/libraries/qt-5/modules/qtwebengine.nix b/pkgs/development/libraries/qt-5/modules/qtwebengine.nix
index 6e4fb476d49..b3607c41933 100644
--- a/pkgs/development/libraries/qt-5/modules/qtwebengine.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtwebengine.nix
@@ -102,7 +102,7 @@ qtModule {
       --replace "-Wl,-fatal_warnings" ""
   '') + postPatch;
 
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
+  env.NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
     # with gcc8, -Wclass-memaccess became part of -Wall and this exceeds the logging limit
     "-Wno-class-memaccess"
   ] ++ lib.optionals (stdenv.hostPlatform.gcc.arch or "" == "sandybridge") [
diff --git a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
index e67d7e5d34d..1299cd11dd6 100644
--- a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
@@ -35,7 +35,7 @@ qtModule {
       "-DMACOS_FORCE_SYSTEM_XML_LIBRARIES=OFF"
     ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # with gcc7 this warning blows the log over Hydra's limit
     "-Wno-expansion-to-defined"
   ]
diff --git a/pkgs/development/libraries/qt-6/modules/qtmultimedia.nix b/pkgs/development/libraries/qt-6/modules/qtmultimedia.nix
index 96ea3d18bab..5372def8aea 100644
--- a/pkgs/development/libraries/qt-6/modules/qtmultimedia.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtmultimedia.nix
@@ -30,7 +30,7 @@ qtModule {
     ++ lib.optionals stdenv.isLinux [ gst-vaapi ]
     ++ lib.optionals stdenv.isDarwin [ VideoToolbox ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin
     "-include AudioToolbox/AudioToolbox.h";
   NIX_LDFLAGS = lib.optionalString stdenv.isDarwin
     "-framework AudioToolbox";
diff --git a/pkgs/development/libraries/qt-6/modules/qtquick3dphysics.nix b/pkgs/development/libraries/qt-6/modules/qtquick3dphysics.nix
index 94e6cb9920c..34c17fc0345 100644
--- a/pkgs/development/libraries/qt-6/modules/qtquick3dphysics.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtquick3dphysics.nix
@@ -8,6 +8,6 @@
 qtModule {
   pname = "qtquick3dphysics";
   qtInputs = [ qtbase qtquick3d ];
-  NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64)
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isx86_64)
     "-faligned-allocation";
 }
diff --git a/pkgs/development/libraries/qt-6/modules/qttools.nix b/pkgs/development/libraries/qt-6/modules/qttools.nix
index 194ec130f93..e913cee041f 100644
--- a/pkgs/development/libraries/qt-6/modules/qttools.nix
+++ b/pkgs/development/libraries/qt-6/modules/qttools.nix
@@ -14,7 +14,7 @@ qtModule {
   patches = [
     ../patches/qttools-paths.patch
   ];
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-DNIX_OUTPUT_DEV=\"${placeholder "dev"}\""
   ];
 
diff --git a/pkgs/development/libraries/rdkafka/default.nix b/pkgs/development/libraries/rdkafka/default.nix
index 2a00d967610..7366565370c 100644
--- a/pkgs/development/libraries/rdkafka/default.nix
+++ b/pkgs/development/libraries/rdkafka/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ zlib zstd openssl ];
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=strict-overflow";
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=strict-overflow";
 
   postPatch = ''
     patchShebangs .
diff --git a/pkgs/development/libraries/rlottie/default.nix b/pkgs/development/libraries/rlottie/default.nix
index 8cc4e350440..3d4e8a5a664 100644
--- a/pkgs/development/libraries/rlottie/default.nix
+++ b/pkgs/development/libraries/rlottie/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ meson ninja pkg-config ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-U__ARM_NEON__";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "-U__ARM_NEON__";
 
   meta = with lib; {
     homepage = "https://github.com/Samsung/rlottie";
diff --git a/pkgs/development/libraries/rocksdb/default.nix b/pkgs/development/libraries/rocksdb/default.nix
index 79cd1b86fad..3945a8ed2c9 100644
--- a/pkgs/development/libraries/rocksdb/default.nix
+++ b/pkgs/development/libraries/rocksdb/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     "tools"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
+  env.NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
     "-Wno-error=deprecated-copy"
     "-Wno-error=pessimizing-move"
     # Needed with GCC 12
diff --git a/pkgs/development/libraries/roctracer/default.nix b/pkgs/development/libraries/roctracer/default.nix
index c235efa6ff4..a81f7dc1896 100644
--- a/pkgs/development/libraries/roctracer/default.nix
+++ b/pkgs/development/libraries/roctracer/default.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation (finalAttrs: {
     "-DCMAKE_INSTALL_INCLUDEDIR=include"
   ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=array-bounds"
   ];
diff --git a/pkgs/development/libraries/science/math/nccl/default.nix b/pkgs/development/libraries/science/math/nccl/default.nix
index 6d5f54288d0..99aed3a6a30 100644
--- a/pkgs/development/libraries/science/math/nccl/default.nix
+++ b/pkgs/development/libraries/science/math/nccl/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
     addOpenGLRunpath $out/lib/lib*.so
   '';
 
-  NIX_CFLAGS_COMPILE = toString [ "-Wno-unused-function" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-Wno-unused-function" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/science/math/osi/default.nix b/pkgs/development/libraries/science/math/osi/default.nix
index b61cd840606..713616b1a50 100644
--- a/pkgs/development/libraries/science/math/osi/default.nix
+++ b/pkgs/development/libraries/science/math/osi/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
     lib.optionalString withCplex "-L${cplex}/cplex/bin/${cplex.libArch}";
 
   # Compile errors
-  NIX_CFLAGS_COMPILE = "-Wno-cast-qual";
+  env.NIX_CFLAGS_COMPILE = "-Wno-cast-qual";
   hardeningDisable = [ "format" ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/libraries/science/math/suitesparse/4.4.nix b/pkgs/development/libraries/science/math/suitesparse/4.4.nix
index e734ed8ff35..95eeaeb8abf 100644
--- a/pkgs/development/libraries/science/math/suitesparse/4.4.nix
+++ b/pkgs/development/libraries/science/math/suitesparse/4.4.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
     "LAPACK=-llapack"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin " -DNTIMER";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin " -DNTIMER";
 
   postInstall = ''
     # Build and install shared library
diff --git a/pkgs/development/libraries/shibboleth-sp/default.nix b/pkgs/development/libraries/shibboleth-sp/default.nix
index fa0d6b8bcb6..84a165956d9 100644
--- a/pkgs/development/libraries/shibboleth-sp/default.nix
+++ b/pkgs/development/libraries/shibboleth-sp/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     "--with-fastcgi"
   ];
 
-  NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/smesh/default.nix b/pkgs/development/libraries/smesh/default.nix
index ddbdc47169c..478237f866c 100644
--- a/pkgs/development/libraries/smesh/default.nix
+++ b/pkgs/development/libraries/smesh/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ninja ];
   buildInputs = [ opencascade ] ++ lib.optionals stdenv.isDarwin [ Cocoa ];
 
-  NIX_CFLAGS_COMPILE = toString [ "-std=c++11" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-std=c++11" ];
 
   meta = with lib; {
     description = "Extension to OCE providing advanced meshing features";
diff --git a/pkgs/development/libraries/spdk/default.nix b/pkgs/development/libraries/spdk/default.nix
index 23464990d86..31f65784061 100644
--- a/pkgs/development/libraries/spdk/default.nix
+++ b/pkgs/development/libraries/spdk/default.nix
@@ -61,7 +61,7 @@ in stdenv.mkDerivation rec {
 
   configureFlags = [ "--with-dpdk=${dpdk'}" ];
 
-  NIX_CFLAGS_COMPILE = "-mssse3"; # Necessary to compile.
+  env.NIX_CFLAGS_COMPILE = "-mssse3"; # Necessary to compile.
   # otherwise does not find strncpy when compiling
   NIX_LDFLAGS = "-lbsd";
 
diff --git a/pkgs/development/libraries/speech-tools/default.nix b/pkgs/development/libraries/speech-tools/default.nix
index e0ca78df79a..3b34ab92829 100644
--- a/pkgs/development/libraries/speech-tools/default.nix
+++ b/pkgs/development/libraries/speech-tools/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   # Workaround build failure on -fno-common toolchains:
   #   ld: libestools.a(editline.o):(.bss+0x28): multiple definition of
   #     `editline_history_file'; libestools.a(siodeditline.o):(.data.rel.local+0x8): first defined here
-  NIX_CFLAGS_COMPILE = "-fcommon";
+  env.NIX_CFLAGS_COMPILE = "-fcommon";
 
   preConfigure = ''
     sed -e s@/usr/bin/@@g -i $( grep -rl '/usr/bin/' . )
diff --git a/pkgs/development/libraries/spice/default.nix b/pkgs/development/libraries/spice/default.nix
index ed47a87ee11..7f7493b2acc 100644
--- a/pkgs/development/libraries/spice/default.nix
+++ b/pkgs/development/libraries/spice/default.nix
@@ -93,7 +93,7 @@ stdenv.mkDerivation rec {
     gdk-pixbuf
   ];
 
-  NIX_CFLAGS_COMPILE = "-fno-stack-protector";
+  env.NIX_CFLAGS_COMPILE = "-fno-stack-protector";
 
   mesonFlags = [
     "-Dgstreamer=1.0"
diff --git a/pkgs/development/libraries/sqlite/default.nix b/pkgs/development/libraries/sqlite/default.nix
index f4654a843f6..151958dd0e1 100644
--- a/pkgs/development/libraries/sqlite/default.nix
+++ b/pkgs/development/libraries/sqlite/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--enable-threadsafe" ] ++ lib.optional interactive "--enable-readline";
 
-  NIX_CFLAGS_COMPILE = toString ([
+  env.NIX_CFLAGS_COMPILE = toString ([
     "-DSQLITE_ENABLE_COLUMN_METADATA"
     "-DSQLITE_ENABLE_DBSTAT_VTAB"
     "-DSQLITE_ENABLE_JSON1"
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     export NIX_LDFLAGS="$NIX_LDFLAGS -lm"
 
     echo ""
-    echo "NIX_CFLAGS_COMPILE = $NIX_CFLAGS_COMPILE"
+    echo "env.NIX_CFLAGS_COMPILE = $NIX_CFLAGS_COMPILE"
     echo ""
   '';
 
diff --git a/pkgs/development/libraries/swiftshader/default.nix b/pkgs/development/libraries/swiftshader/default.nix
index 424ff7bff93..cfcccd018f9 100644
--- a/pkgs/development/libraries/swiftshader/default.nix
+++ b/pkgs/development/libraries/swiftshader/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake python3 jq ];
   buildInputs = [ libX11 libXext zlib ];
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     # Needed with GCC 12
     "-Wno-error=array-bounds"
     "-Wno-error=uninitialized"
diff --git a/pkgs/development/libraries/tinyxml/2.6.2.nix b/pkgs/development/libraries/tinyxml/2.6.2.nix
index e8c5dd1dacd..ebfd8e5670f 100644
--- a/pkgs/development/libraries/tinyxml/2.6.2.nix
+++ b/pkgs/development/libraries/tinyxml/2.6.2.nix
@@ -27,7 +27,7 @@ in stdenv.mkDerivation {
 
   hardeningDisable = [ "format" ];
 
-  NIX_CFLAGS_COMPILE =
+  env.NIX_CFLAGS_COMPILE =
     lib.optionalString stdenv.isDarwin "-mmacosx-version-min=10.9";
 
   nativeBuildInputs = [ unzip ];
diff --git a/pkgs/development/libraries/ucl/default.nix b/pkgs/development/libraries/ucl/default.nix
index 5aef7e9d8f4..048f35868cd 100644
--- a/pkgs/development/libraries/ucl/default.nix
+++ b/pkgs/development/libraries/ucl/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   # needed to successfully compile with gcc 6
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isGNU "-std=c90";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isGNU "-std=c90";
 
   meta = {
     homepage = "http://www.oberhumer.com/opensource/ucl/";
diff --git a/pkgs/development/libraries/uri/default.nix b/pkgs/development/libraries/uri/default.nix
index 2434e2878ef..51c2bcd59a5 100644
--- a/pkgs/development/libraries/uri/default.nix
+++ b/pkgs/development/libraries/uri/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "148361pixrm94q6v04k13s1msa04bx9yc3djb0lxpa7dlw19vhcd";
   };
 
-  NIX_CFLAGS_COMPILE = toString [
+  env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=parentheses"
     # Needed with GCC 12
     "-Wno-error=deprecated-declarations"
diff --git a/pkgs/development/libraries/ustr/default.nix b/pkgs/development/libraries/ustr/default.nix
index 564a996949d..b0e4ab6c064 100644
--- a/pkgs/development/libraries/ustr/default.nix
+++ b/pkgs/development/libraries/ustr/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   patches = [ ./va_args.patch ];
 
   # Work around gcc5 switch to gnu11
-  NIX_CFLAGS_COMPILE = "-std=gnu89";
+  env.NIX_CFLAGS_COMPILE = "-std=gnu89";
 
   # Fix detection of stdint.h
   postPatch = ''
diff --git a/pkgs/development/libraries/v8/8_x.nix b/pkgs/development/libraries/v8/8_x.nix
index d55d87f3216..67187a5ec10 100644
--- a/pkgs/development/libraries/v8/8_x.nix
+++ b/pkgs/development/libraries/v8/8_x.nix
@@ -125,7 +125,7 @@ stdenv.mkDerivation rec {
     ''v8_snapshot_toolchain="//build/toolchain/linux/unbundle:default"''
   ] ++ lib.optional stdenv.cc.isClang ''clang_base_path="${stdenv.cc}"'';
 
-  NIX_CFLAGS_COMPILE = "-O2";
+  env.NIX_CFLAGS_COMPILE = "-O2";
   FORCE_MAC_SDK_MIN = stdenv.targetPlatform.sdkVer or "10.12";
 
   nativeBuildInputs = [
diff --git a/pkgs/development/libraries/v8/default.nix b/pkgs/development/libraries/v8/default.nix
index 4b2117503bd..73ff8403400 100644
--- a/pkgs/development/libraries/v8/default.nix
+++ b/pkgs/development/libraries/v8/default.nix
@@ -135,7 +135,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optional stdenv.cc.isClang ''clang_base_path="${llvmCcAndBintools}"''
   ++ lib.optional stdenv.isDarwin ''use_lld=false'';
 
-  NIX_CFLAGS_COMPILE = "-O2";
+  env.NIX_CFLAGS_COMPILE = "-O2";
   FORCE_MAC_SDK_MIN = stdenv.targetPlatform.sdkVer or "10.12";
 
   nativeBuildInputs = [
diff --git a/pkgs/development/libraries/vaapi-intel-hybrid/default.nix b/pkgs/development/libraries/vaapi-intel-hybrid/default.nix
index ca40d426094..aec3bcc6af2 100644
--- a/pkgs/development/libraries/vaapi-intel-hybrid/default.nix
+++ b/pkgs/development/libraries/vaapi-intel-hybrid/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   # Workaround build failure on -fno-common toolchains like upstream gcc-10.
-  NIX_CFLAGS_COMPILE = "-fcommon";
+  env.NIX_CFLAGS_COMPILE = "-fcommon";
 
   configureFlags = [
     "--enable-drm"
diff --git a/pkgs/development/libraries/vigra/default.nix b/pkgs/development/libraries/vigra/default.nix
index 32b97f8ea2d..320b43f0e51 100644
--- a/pkgs/development/libraries/vigra/default.nix
+++ b/pkgs/development/libraries/vigra/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-pFANoT00Wkh1/Dyd2x75IVTfyaoVA7S86tafUSr29Og=";
   };
 
-  NIX_CFLAGS_COMPILE = "-I${ilmbase.dev}/include/OpenEXR";
+  env.NIX_CFLAGS_COMPILE = "-I${ilmbase.dev}/include/OpenEXR";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [
diff --git a/pkgs/development/libraries/vte/default.nix b/pkgs/development/libraries/vte/default.nix
index 085fd7ee8ad..d331391ce0e 100644
--- a/pkgs/development/libraries/vte/default.nix
+++ b/pkgs/development/libraries/vte/default.nix
@@ -93,7 +93,7 @@ stdenv.mkDerivation rec {
   ];
 
   # error: argument unused during compilation: '-pie' [-Werror,-Wunused-command-line-argument]
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isMusl "-Wno-unused-command-line-argument";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isMusl "-Wno-unused-command-line-argument";
 
   postPatch = ''
     patchShebangs perf/*
diff --git a/pkgs/development/libraries/wxwidgets/wxmac30.nix b/pkgs/development/libraries/wxwidgets/wxmac30.nix
index 73bf013452a..d4509295969 100644
--- a/pkgs/development/libraries/wxwidgets/wxmac30.nix
+++ b/pkgs/development/libraries/wxwidgets/wxmac30.nix
@@ -77,7 +77,7 @@ stdenv.mkDerivation rec {
     ./wx-config --libs
   '';
 
-  NIX_CFLAGS_COMPILE = "-Wno-undef";
+  env.NIX_CFLAGS_COMPILE = "-Wno-undef";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/xml-tooling-c/default.nix b/pkgs/development/libraries/xml-tooling-c/default.nix
index 6ceb58065f2..dcd35d187f9 100644
--- a/pkgs/development/libraries/xml-tooling-c/default.nix
+++ b/pkgs/development/libraries/xml-tooling-c/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ boost curl openssl log4shib xercesc xml-security-c ];
   nativeBuildInputs = [ autoreconfHook pkg-config ];
 
-  NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
+  env.NIX_CFLAGS_COMPILE = toString [ "-std=c++14" ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/zlib/default.nix b/pkgs/development/libraries/zlib/default.nix
index 4ca77d56fca..85d125be099 100644
--- a/pkgs/development/libraries/zlib/default.nix
+++ b/pkgs/development/libraries/zlib/default.nix
@@ -102,7 +102,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   # As zlib takes part in the stdenv building, we don't want references
   # to the bootstrap-tools libgcc (as uses to happen on arm/mips)
-  NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-static-libgcc";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-static-libgcc";
 
   # We don't strip on static cross-compilation because of reports that native
   # stripping corrupted the target library; see commit 12e960f5 for the report.