diff --git a/pkgs/by-name/ca/cargo-lambda/package.nix b/pkgs/by-name/ca/cargo-lambda/package.nix
index ec87d7a95376..6d6bc5a3b780 100644
--- a/pkgs/by-name/ca/cargo-lambda/package.nix
+++ b/pkgs/by-name/ca/cargo-lambda/package.nix
@@ -51,7 +51,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
     wrapProgram $out/bin/cargo-lambda --prefix PATH : ${lib.makeBinPath [ zig_0_13 ]}
   '';
 
-  CARGO_LAMBDA_BUILD_INFO = "(nixpkgs)";
+  env.CARGO_LAMBDA_BUILD_INFO = "(nixpkgs)";
 
   cargoBuildFlags = [ "--features=skip-build-banner" ];
   cargoCheckFlags = [ "--features=skip-build-banner" ];
diff --git a/pkgs/by-name/co/codebook/package.nix b/pkgs/by-name/co/codebook/package.nix
index f918d785faf0..3da924bec58e 100644
--- a/pkgs/by-name/co/codebook/package.nix
+++ b/pkgs/by-name/co/codebook/package.nix
@@ -20,8 +20,10 @@ rustPlatform.buildRustPackage (finalAttrs: {
   buildAndTestSubdir = "crates/codebook-lsp";
   cargoHash = "sha256-hxPgYGBq+KZfEyFiHQG31cNEN6A6hUgKRgZXIHOGalw=";
 
-  CARGO_PROFILE_RELEASE_LTO = "fat";
-  CARGO_PROFILE_RELEASE_CODEGEN_UNITS = "1";
+  env = {
+    CARGO_PROFILE_RELEASE_LTO = "fat";
+    CARGO_PROFILE_RELEASE_CODEGEN_UNITS = "1";
+  };
 
   # Integration tests require internet access for dictionaries
   doCheck = false;
diff --git a/pkgs/by-name/ec/ecc/package.nix b/pkgs/by-name/ec/ecc/package.nix
index 5ad96e6cd549..aee4052f8132 100644
--- a/pkgs/by-name/ec/ecc/package.nix
+++ b/pkgs/by-name/ec/ecc/package.nix
@@ -78,7 +78,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
     zlib
   ];
 
-  CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER = "gcc";
+  env.CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER = "gcc";
 
   preBuild = ''
     # `SANDBOX` defined by upstream to disable build-time network access
diff --git a/pkgs/by-name/mh/mhost/package.nix b/pkgs/by-name/mh/mhost/package.nix
index ef08dc884b0f..48364f3abca1 100644
--- a/pkgs/by-name/mh/mhost/package.nix
+++ b/pkgs/by-name/mh/mhost/package.nix
@@ -17,7 +17,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   cargoHash = "sha256-08pvkBa2PD7/uko1OOBg6/dCcOM3z9Cp//8mylFCMcE=";
 
-  CARGO_CRATE_NAME = "mhost";
+  env.CARGO_CRATE_NAME = "mhost";
 
   doCheck = false;
 
diff --git a/pkgs/by-name/oh/oha/package.nix b/pkgs/by-name/oh/oha/package.nix
index 9ea88a485e73..aabfc749ac94 100644
--- a/pkgs/by-name/oh/oha/package.nix
+++ b/pkgs/by-name/oh/oha/package.nix
@@ -22,8 +22,10 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   cargoHash = "sha256-v+OfQEfAwHxX+FfC0UK2F8/e2tJKaI3zQpg+3hk2hV4=";
 
-  CARGO_PROFILE_RELEASE_LTO = "fat";
-  CARGO_PROFILE_RELEASE_CODEGEN_UNITS = "1";
+  env = {
+    CARGO_PROFILE_RELEASE_LTO = "fat";
+    CARGO_PROFILE_RELEASE_CODEGEN_UNITS = "1";
+  };
 
   nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [
     pkg-config
diff --git a/pkgs/by-name/ru/rutabaga_gfx/package.nix b/pkgs/by-name/ru/rutabaga_gfx/package.nix
index bbd6c3ef1512..5caaa90d1ed4 100644
--- a/pkgs/by-name/ru/rutabaga_gfx/package.nix
+++ b/pkgs/by-name/ru/rutabaga_gfx/package.nix
@@ -58,8 +58,10 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.mesonBool "gfxstream" withGfxstream)
   ];
 
-  CARGO_BUILD_TARGET = stdenv.hostPlatform.rust.rustcTargetSpec;
-  "CARGO_TARGET_${stdenv.hostPlatform.rust.cargoEnvVarTarget}_LINKER" = "${stdenv.cc.targetPrefix}cc";
+  env = {
+    CARGO_BUILD_TARGET = stdenv.hostPlatform.rust.rustcTargetSpec;
+    "CARGO_TARGET_${stdenv.hostPlatform.rust.cargoEnvVarTarget}_LINKER" = "${stdenv.cc.targetPrefix}cc";
+  };
 
   preConfigure = ''
     cd rutabaga_gfx/ffi
diff --git a/pkgs/by-name/sc/scryer-prolog/package.nix b/pkgs/by-name/sc/scryer-prolog/package.nix
index 1fba7059afdd..2c3fe35fa29e 100644
--- a/pkgs/by-name/sc/scryer-prolog/package.nix
+++ b/pkgs/by-name/sc/scryer-prolog/package.nix
@@ -23,7 +23,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   buildInputs = [ openssl ];
 
-  CARGO_FEATURE_USE_SYSTEM_LIBS = true;
+  env.CARGO_FEATURE_USE_SYSTEM_LIBS = true;
 
   meta = {
     description = "Modern Prolog implementation written mostly in Rust";
diff --git a/pkgs/by-name/ya/yara-x/package.nix b/pkgs/by-name/ya/yara-x/package.nix
index 2e9dac81f8c2..fe3cf78432c8 100644
--- a/pkgs/by-name/ya/yara-x/package.nix
+++ b/pkgs/by-name/ya/yara-x/package.nix
@@ -22,8 +22,10 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   cargoHash = "sha256-ihNFGlPhPLCIDvFnMqKA+flD/mv9wcKgQ1txO71xOp4=";
 
-  CARGO_PROFILE_RELEASE_LTO = "fat";
-  CARGO_PROFILE_RELEASE_CODEGEN_UNITS = "1";
+  env = {
+    CARGO_PROFILE_RELEASE_LTO = "fat";
+    CARGO_PROFILE_RELEASE_CODEGEN_UNITS = "1";
+  };
 
   nativeBuildInputs = [
     installShellFiles