diff --git a/pkgs/build-support/rust/hooks/cargo-build-hook.sh b/pkgs/build-support/rust/hooks/cargo-build-hook.sh
index af94e02e38ae..15b32a746501 100644
--- a/pkgs/build-support/rust/hooks/cargo-build-hook.sh
+++ b/pkgs/build-support/rust/hooks/cargo-build-hook.sh
@@ -30,13 +30,8 @@ cargoBuildHook() {
 
     (
     set -x
-    env \
-      "CC_@rustBuildPlatform@=@ccForBuild@" \
-      "CXX_@rustBuildPlatform@=@cxxForBuild@" \
-      "CC_@rustTargetPlatform@=@ccForHost@" \
-      "CXX_@rustTargetPlatform@=@cxxForHost@" \
-      cargo build -j $NIX_BUILD_CORES \
-        --target @rustTargetPlatformSpec@ \
+    @setEnv@ cargo build -j $NIX_BUILD_CORES \
+        --target @rustHostPlatformSpec@ \
         --frozen \
         ${cargoBuildProfileFlag} \
         ${cargoBuildNoDefaultFeaturesFlag} \
diff --git a/pkgs/build-support/rust/hooks/cargo-check-hook.sh b/pkgs/build-support/rust/hooks/cargo-check-hook.sh
index 57fc2779cfe9..613c81a8d6fd 100644
--- a/pkgs/build-support/rust/hooks/cargo-check-hook.sh
+++ b/pkgs/build-support/rust/hooks/cargo-check-hook.sh
@@ -29,7 +29,7 @@ cargoCheckHook() {
     fi
 
     argstr="${cargoCheckProfileFlag} ${cargoCheckNoDefaultFeaturesFlag} ${cargoCheckFeaturesFlag}
-        --target @rustTargetPlatformSpec@ --frozen ${cargoTestFlags}"
+        --target @rustHostPlatformSpec@ --frozen ${cargoTestFlags}"
 
     (
         set -x
diff --git a/pkgs/build-support/rust/hooks/cargo-install-hook.sh b/pkgs/build-support/rust/hooks/cargo-install-hook.sh
index 69ce72669366..24a6e6fa9eb3 100644
--- a/pkgs/build-support/rust/hooks/cargo-install-hook.sh
+++ b/pkgs/build-support/rust/hooks/cargo-install-hook.sh
@@ -1,7 +1,7 @@
 cargoInstallPostBuildHook() {
     echo "Executing cargoInstallPostBuildHook"
 
-    releaseDir=target/@shortTarget@/$cargoBuildType
+    releaseDir=target/@targetSubdirectory@/$cargoBuildType
     tmpDir="${releaseDir}-tmp";
 
     mkdir -p $tmpDir
@@ -21,7 +21,7 @@ cargoInstallHook() {
 
     # rename the output dir to a architecture independent one
 
-    releaseDir=target/@shortTarget@/$cargoBuildType
+    releaseDir=target/@targetSubdirectory@/$cargoBuildType
     tmpDir="${releaseDir}-tmp";
 
     mapfile -t targets < <(find "$NIX_BUILD_TOP" -type d | grep "${tmpDir}$")
diff --git a/pkgs/build-support/rust/hooks/cargo-nextest-hook.sh b/pkgs/build-support/rust/hooks/cargo-nextest-hook.sh
index de85683ead2a..055cabdc2204 100644
--- a/pkgs/build-support/rust/hooks/cargo-nextest-hook.sh
+++ b/pkgs/build-support/rust/hooks/cargo-nextest-hook.sh
@@ -29,7 +29,7 @@ cargoNextestHook() {
     fi
 
     argstr="${cargoCheckProfileFlag} ${cargoCheckNoDefaultFeaturesFlag} ${cargoCheckFeaturesFlag}
-        --target @rustTargetPlatformSpec@ --frozen ${cargoTestFlags}"
+        --target @rustHostPlatformSpec@ --frozen ${cargoTestFlags}"
 
     (
         set -x
diff --git a/pkgs/build-support/rust/hooks/default.nix b/pkgs/build-support/rust/hooks/default.nix
index 2eb388fe07ba..cf06300096f3 100644
--- a/pkgs/build-support/rust/hooks/default.nix
+++ b/pkgs/build-support/rust/hooks/default.nix
@@ -9,6 +9,10 @@
 , rust
 , rustc
 , stdenv
+
+# This confusingly-named parameter indicates the *subdirectory of
+# `target/` from which to copy the build artifacts.  It is derived
+# from a stdenv platform (or a JSON file; see below).
 , target ? rust.toRustTargetSpec stdenv.hostPlatform
 }:
 
@@ -17,24 +21,17 @@ let
 
   # see https://github.com/rust-lang/cargo/blob/964a16a28e234a3d397b2a7031d4ab4a428b1391/src/cargo/core/compiler/compile_kind.rs#L151-L168
   # the "${}" is needed to transform the path into a /nix/store path before baseNameOf
-  shortTarget = if targetIsJSON then
+  targetSubdirectory = if targetIsJSON then
       (lib.removeSuffix ".json" (builtins.baseNameOf "${target}"))
     else target;
-  ccForBuild = "${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}cc";
-  cxxForBuild = "${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}c++";
-  ccForHost = "${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc";
-  cxxForHost = "${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++";
-  rustBuildPlatform = rust.toRustTarget stdenv.buildPlatform;
-  rustTargetPlatform = rust.toRustTarget stdenv.hostPlatform;
-  rustTargetPlatformSpec = rust.toRustTargetSpec stdenv.hostPlatform;
+
 in {
   cargoBuildHook = callPackage ({ }:
     makeSetupHook {
       name = "cargo-build-hook.sh";
       propagatedBuildInputs = [ cargo ];
       substitutions = {
-        inherit ccForBuild ccForHost cxxForBuild cxxForHost
-          rustBuildPlatform rustTargetPlatform rustTargetPlatformSpec;
+        inherit (rust.envVars) rustHostPlatformSpec setEnv;
       };
     } ./cargo-build-hook.sh) {};
 
@@ -43,7 +40,7 @@ in {
       name = "cargo-check-hook.sh";
       propagatedBuildInputs = [ cargo ];
       substitutions = {
-        inherit rustTargetPlatformSpec;
+        inherit (rust.envVars) rustHostPlatformSpec;
       };
     } ./cargo-check-hook.sh) {};
 
@@ -52,7 +49,7 @@ in {
       name = "cargo-install-hook.sh";
       propagatedBuildInputs = [ ];
       substitutions = {
-        inherit shortTarget;
+        inherit targetSubdirectory;
       };
     } ./cargo-install-hook.sh) {};
 
@@ -61,7 +58,7 @@ in {
       name = "cargo-nextest-hook.sh";
       propagatedBuildInputs = [ cargo cargo-nextest ];
       substitutions = {
-        inherit rustTargetPlatformSpec;
+        inherit (rust.envVars) rustHostPlatformSpec;
       };
     } ./cargo-nextest-hook.sh) {};
 
@@ -78,23 +75,26 @@ in {
 
         cargoConfig = ''
           [target."${rust.toRustTarget stdenv.buildPlatform}"]
-          "linker" = "${ccForBuild}"
-          ${lib.optionalString (stdenv.buildPlatform.config != stdenv.hostPlatform.config) ''
-            [target."${shortTarget}"]
-            "linker" = "${ccForHost}"
+          "linker" = "${rust.envVars.ccForBuild}"
+          ${lib.optionalString (stdenv.hostPlatform.config != stdenv.targetPlatform.config) ''
+            [target."${rust.toRustTarget stdenv.targetPlatform}"]
+            "linker" = "${rust.envVars.ccForTarget}"
           ''}
           "rustflags" = [ "-C", "target-feature=${if stdenv.hostPlatform.isStatic then "+" else "-"}crt-static" ]
         '';
       };
     } ./cargo-setup-hook.sh) {};
 
-  maturinBuildHook = callPackage ({ }:
+  maturinBuildHook = callPackage ({ pkgsHostTarget }:
     makeSetupHook {
       name = "maturin-build-hook.sh";
-      propagatedBuildInputs = [ cargo maturin rustc ];
+      propagatedBuildInputs = [
+        pkgsHostTarget.maturin
+        pkgsHostTarget.cargo
+        pkgsHostTarget.rustc
+      ];
       substitutions = {
-        inherit ccForBuild ccForHost cxxForBuild cxxForHost
-          rustBuildPlatform rustTargetPlatform rustTargetPlatformSpec;
+        inherit (rust.envVars) rustTargetPlatformSpec setEnv;
       };
     } ./maturin-build-hook.sh) {};
 
diff --git a/pkgs/build-support/rust/hooks/maturin-build-hook.sh b/pkgs/build-support/rust/hooks/maturin-build-hook.sh
index 62d5619660c6..d5ff069290ba 100644
--- a/pkgs/build-support/rust/hooks/maturin-build-hook.sh
+++ b/pkgs/build-support/rust/hooks/maturin-build-hook.sh
@@ -9,12 +9,7 @@ maturinBuildHook() {
 
     (
     set -x
-    env \
-      "CC_@rustBuildPlatform@=@ccForBuild@" \
-      "CXX_@rustBuildPlatform@=@cxxForBuild@" \
-      "CC_@rustTargetPlatform@=@ccForHost@" \
-      "CXX_@rustTargetPlatform@=@cxxForHost@" \
-      maturin build \
+    @setEnv@ maturin build \
         --jobs=$NIX_BUILD_CORES \
         --frozen \
         --target @rustTargetPlatformSpec@ \