diff --git a/pkgs/os-specific/windows/default.nix b/pkgs/os-specific/windows/default.nix
index 3cfdb8c7e85da..3a8813b15aaa8 100644
--- a/pkgs/os-specific/windows/default.nix
+++ b/pkgs/os-specific/windows/default.nix
@@ -1,5 +1,6 @@
 {
   lib,
+  config,
   stdenv,
   buildPackages,
   pkgs,
@@ -9,7 +10,9 @@
 }:
 
 lib.makeScope newScope (
-  self: with self; {
+  self:
+  with self;
+  {
     dlfcn = callPackage ./dlfcn { };
 
     mingw_w64 = callPackage ./mingw-w64 {
@@ -31,8 +34,6 @@ lib.makeScope newScope (
 
     mingw_w64_headers = callPackage ./mingw-w64/headers.nix { };
 
-    mingw_w64_pthreads = lib.warn "windows.mingw_w64_pthreads is deprecated, windows.pthreads should be preferred" self.pthreads;
-
     mcfgthreads = callPackage ./mcfgthreads { stdenv = crossThreadsStdenv; };
 
     npiperelay = callPackage ./npiperelay { };
@@ -43,4 +44,7 @@ lib.makeScope newScope (
 
     sdk = callPackage ./msvcSdk { };
   }
+  // lib.optionalAttrs config.allowAliases {
+    mingw_w64_pthreads = lib.warn "windows.mingw_w64_pthreads is deprecated, windows.pthreads should be preferred" self.pthreads;
+  }
 )
diff --git a/pkgs/os-specific/windows/msvcSdk/default.nix b/pkgs/os-specific/windows/msvcSdk/default.nix
index 17e0cce656a6d..f57d2bf90de96 100644
--- a/pkgs/os-specific/windows/msvcSdk/default.nix
+++ b/pkgs/os-specific/windows/msvcSdk/default.nix
@@ -24,102 +24,104 @@ let
     else
       throw "Unsupported system";
 in
-if !config.microsoftVisualStudioLicenseAccepted then
-  throw ''
-    Microsoft Software License Terms are not accepted with config.microsoftVisualStudioLicenseAccepted.
-    Please read https://visualstudio.microsoft.com/license-terms/mt644918/ and if you agree, change your
-    config to indicate so.
-  ''
-else
-  stdenvNoCC.mkDerivation (finalAttrs: {
-    inherit version;
-    pname = "msvc-sdk";
-    dontUnpack = true;
-
-    strictDeps = true;
-    nativeBuildInputs = [ xwin ];
-
-    outputHashAlgo = "sha256";
-    outputHashMode = "recursive";
-    outputHash = hashes.${arch};
-
-    __structuredAttrs = true;
-    xwinArgs = [
-      "--accept-license"
-      "--cache-dir=xwin-out"
-      "--manifest=${./manifest.json}"
-      "--arch=${arch}"
-      "splat"
-      "--preserve-ms-arch-notation"
-    ];
-
-    buildPhase = ''
-      runHook preBuild
-
-      xwin "''${xwinArgs[@]}"
-      mkdir "$out"
-      mv xwin-out/splat/* "$out"
-
-      runHook postBuild
-    '';
-
-    dontFixup = true;
-    dontInstall = true;
-
-    passthru = {
-      updateScript = ./update.nu;
-      tests = {
-        hello-world = testers.runCommand {
-          name = "hello-msvc";
-
-          nativeBuildInputs = [
-            llvmPackages.clang-unwrapped
-            llvmPackages.bintools-unwrapped
-          ];
-
-          script = ''
-            set -euo pipefail
-
-            cat > hello.c <<- EOF
-            #include <stdio.h>
-
-            int main(int argc, char* argv[]) {
-                printf("Hello world!\n");
-                return 0;
-            }
-            EOF
-
-            clang-cl --target=x86_64-pc-windows-msvc -fuse-ld=lld \
-                /vctoolsdir ${finalAttrs.finalPackage}/crt \
-                /winsdkdir ${finalAttrs.finalPackage}/sdk \
-                ./hello.c -v
-
-            if test ! -f hello.exe; then
-              echo "hello.exe not found!"
-              exit 1
-            else
-              touch $out
-            fi
-          '';
-        };
+stdenvNoCC.mkDerivation (finalAttrs: {
+  inherit version;
+  pname = "msvc-sdk";
+  dontUnpack = true;
+
+  strictDeps = true;
+  nativeBuildInputs = [ xwin ];
+
+  outputHashAlgo = "sha256";
+  outputHashMode = "recursive";
+  outputHash =
+    if !config.microsoftVisualStudioLicenseAccepted then
+      throw ''
+        Microsoft Software License Terms are not accepted with config.microsoftVisualStudioLicenseAccepted.
+        Please read https://visualstudio.microsoft.com/license-terms/mt644918/ and if you agree, change your
+        config to indicate so.
+      ''
+    else
+      hashes.${arch};
+
+  __structuredAttrs = true;
+  xwinArgs = [
+    "--accept-license"
+    "--cache-dir=xwin-out"
+    "--manifest=${./manifest.json}"
+    "--arch=${arch}"
+    "splat"
+    "--preserve-ms-arch-notation"
+  ];
+
+  buildPhase = ''
+    runHook preBuild
+
+    xwin "''${xwinArgs[@]}"
+    mkdir "$out"
+    mv xwin-out/splat/* "$out"
+
+    runHook postBuild
+  '';
+
+  dontFixup = true;
+  dontInstall = true;
+
+  passthru = {
+    updateScript = ./update.nu;
+    tests = {
+      hello-world = testers.runCommand {
+        name = "hello-msvc";
+
+        nativeBuildInputs = [
+          llvmPackages.clang-unwrapped
+          llvmPackages.bintools-unwrapped
+        ];
+
+        script = ''
+          set -euo pipefail
+
+          cat > hello.c <<- EOF
+          #include <stdio.h>
+
+          int main(int argc, char* argv[]) {
+              printf("Hello world!\n");
+              return 0;
+          }
+          EOF
+
+          clang-cl --target=x86_64-pc-windows-msvc -fuse-ld=lld \
+              /vctoolsdir ${finalAttrs.finalPackage}/crt \
+              /winsdkdir ${finalAttrs.finalPackage}/sdk \
+              ./hello.c -v
+
+          if test ! -f hello.exe; then
+            echo "hello.exe not found!"
+            exit 1
+          else
+            touch $out
+          fi
+        '';
       };
     };
-
-    meta = {
-      description = "MSVC SDK and Windows CRT for cross compiling";
-      homepage = "https://developer.microsoft.com/en-us/windows/downloads/windows-sdk/";
-      maintainers = [ lib.maintainers.RossSmyth ];
-      license = {
-        deprecated = false;
-        fullName = "Microsoft Software License Terms";
-        shortName = "msvc";
-        spdxId = "unknown";
-        url = "https://www.visualstudio.com/license-terms/mt644918/";
-      };
-      platforms = lib.platforms.all;
-      # The arm32 manifest is missing critical pieces.
-      broken = stdenvNoCC.hostPlatform.isAarch32;
-      sourceProvenance = [ lib.sourceTypes.binaryNativeCode ];
-      teams = [ lib.teams.windows ];
+  };
+
+  meta = {
+    description = "MSVC SDK and Windows CRT for cross compiling";
+    homepage = "https://developer.microsoft.com/en-us/windows/downloads/windows-sdk/";
+    maintainers = [ lib.maintainers.RossSmyth ];
+    license = {
+      deprecated = false;
+      fullName = "Microsoft Software License Terms";
+      shortName = "msvc";
+      spdxId = "unknown";
+      free = false;
+      url = "https://www.visualstudio.com/license-terms/mt644918/";
     };
-  })
+    platforms = lib.platforms.all;
+    # The arm32 manifest is missing critical pieces.
+    broken = stdenvNoCC.hostPlatform.isAarch32;
+    sourceProvenance = [ lib.sourceTypes.binaryNativeCode ];
+    teams = [ lib.teams.windows ];
+  };
+})