Revert "Add mingwW64-llvm cross-system."

57 files changed, 85 insertions, 672 deletions

diff --git a/pkgs/build-support/bintools-wrapper/add-lld-ldflags-before.sh b/pkgs/build-support/bintools-wrapper/add-lld-ldflags-before.sh
deleted file mode 100644
index 265339eb185..00000000000
--- a/pkgs/build-support/bintools-wrapper/add-lld-ldflags-before.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-# ld.lld has two incompatible command-line drivers: One for the gnu-compatible COFF linker and one for
-# the ELF linker. If no emulation is set (with -m), it will default to the ELF linker;
-# unfortunately, some configure scripts use `ld --help` to check for certain Windows-specific flags,
-# which don't show up in the help for the ELF linker. So we set a default -m here.
-
-extraBefore+=("-m" "@mtype@")
diff --git a/pkgs/build-support/bintools-wrapper/default.nix b/pkgs/build-support/bintools-wrapper/default.nix
index e4fb3c6d6a6..4c2a13da015 100644
--- a/pkgs/build-support/bintools-wrapper/default.nix
+++ b/pkgs/build-support/bintools-wrapper/default.nix
@@ -31,13 +31,6 @@
 
 # Darwin code signing support utilities
 , postLinkSignHook ? null, signingUtils ? null
-
-# Linker type
-, isLld ? bintools.isLld or false
-, isCctools ? bintools.isCctools or false
-, isGNU ? bintools.isGNU or false
-, isGold ? bintools.isGold or false
-, isBfd ? bintools.isBfd or false
 }:
 
 with lib;
@@ -120,8 +113,6 @@ stdenv.mkDerivation {
   passthru = {
     inherit bintools libc nativeTools nativeLibc nativePrefix;
 
-    inherit isLld isCctools isGNU isGold isBfd;
-
     emacsBufferSetup = pkgs: ''
       ; We should handle propagation here too
       (mapc
@@ -302,11 +293,6 @@ stdenv.mkDerivation {
       echo "-arch ${targetPlatform.darwinArch}" >> $out/nix-support/libc-ldflags
     ''
 
-    # lld's MinGW driver (e.g. `ld.lld -m i386pep`) does not support the `-z` flag.
-    + optionalString (targetPlatform.isWindows && isLld) ''
-      hardening_unsupported_flags+=" relro bindnow"
-    ''
-
     ##
     ## GNU specific extra strip flags
     ##
@@ -352,24 +338,6 @@ stdenv.mkDerivation {
     )
 
     ##
-    ## Set the default machine type so that $prefix-ld.lld uses the COFF driver for --help
-    ##
-    ## Needed because autotools parses --help for linker features...
-    ##
-    + optionalString (isLld && stdenv.targetPlatform.isWindows) (let
-      mtype =
-        /**/ if targetPlatform.isx86_32 then "i386pe"
-        else if targetPlatform.isx86_64 then "i386pep"
-        else if targetPlatform.isAarch32 then "thumb2pe"
-        else if targetPlatform.isAarch64 then "arm64pe"
-        else throw "unsupported target arch for lld";
-    in ''
-      export mtype=${mtype}
-      substituteAll ${./add-lld-ldflags-before.sh} add-local-ldflags-before.sh
-      cat add-local-ldflags-before.sh >> $out/nix-support/add-local-ldflags-before.sh
-    '')
-
-    ##
     ## Code signing on Apple Silicon
     ##
     + optionalString (targetPlatform.isDarwin && targetPlatform.isAarch64) ''
diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index 6e8e65fbb3f..ac6257220fd 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -18,7 +18,6 @@
 , isGNU ? false, isClang ? cc.isClang or false, gnugrep ? null
 , buildPackages ? {}
 , libcxx ? null
-, isCompilerRT ? false
 }:
 
 with lib;
@@ -147,7 +146,7 @@ stdenv.mkDerivation {
     # Binutils, and Apple's "cctools"; "bintools" as an attempt to find an
     # unused middle-ground name that evokes both.
     inherit bintools;
-    inherit libc nativeTools nativeLibc nativePrefix isGNU isClang isCompilerRT;
+    inherit libc nativeTools nativeLibc nativePrefix isGNU isClang;
 
     emacsBufferSetup = pkgs: ''
       ; We should handle propagation here too
@@ -480,8 +479,6 @@ stdenv.mkDerivation {
       hardening_unsupported_flags+=" pic"
     '' + optionalString targetPlatform.isMinGW ''
       hardening_unsupported_flags+=" stackprotector fortify"
-    '' + optionalString (targetPlatform.isWindows && isClang) ''
-      hardening_unsupported_flags+=" pic"
     '' + optionalString targetPlatform.isAvr ''
       hardening_unsupported_flags+=" stackprotector pic"
     '' + optionalString (targetPlatform.libc == "newlib") ''
diff --git a/pkgs/development/compilers/gcc/10/default.nix b/pkgs/development/compilers/gcc/10/default.nix
index 187d43b5091..88d4831812f 100644
--- a/pkgs/development/compilers/gcc/10/default.nix
+++ b/pkgs/development/compilers/gcc/10/default.nix
@@ -79,7 +79,7 @@ let majorVersion = "10";
       });
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -292,7 +292,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/11/default.nix b/pkgs/development/compilers/gcc/11/default.nix
index 806c09c16cf..607c9eeac2f 100644
--- a/pkgs/development/compilers/gcc/11/default.nix
+++ b/pkgs/development/compilers/gcc/11/default.nix
@@ -83,7 +83,7 @@ let majorVersion = "11";
       ++ optional (!crossStageStatic && targetPlatform.isMinGW) ./Added-mcf-thread-model-support-from-mcfgthread.patch;
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -297,7 +297,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/4.8/default.nix b/pkgs/development/compilers/gcc/4.8/default.nix
index 03646c65220..8cd0d3c9ce8 100644
--- a/pkgs/development/compilers/gcc/4.8/default.nix
+++ b/pkgs/development/compilers/gcc/4.8/default.nix
@@ -114,7 +114,7 @@ let majorVersion = "4";
     javaAwtGtk = langJava && x11Support;
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -316,7 +316,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/4.9/default.nix b/pkgs/development/compilers/gcc/4.9/default.nix
index d3bd1b70641..b3d0f8d5d50 100644
--- a/pkgs/development/compilers/gcc/4.9/default.nix
+++ b/pkgs/development/compilers/gcc/4.9/default.nix
@@ -130,7 +130,7 @@ let majorVersion = "4";
     javaAwtGtk = langJava && x11Support;
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -332,7 +332,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/6/default.nix b/pkgs/development/compilers/gcc/6/default.nix
index d3007f17063..62b46df1ab0 100644
--- a/pkgs/development/compilers/gcc/6/default.nix
+++ b/pkgs/development/compilers/gcc/6/default.nix
@@ -111,7 +111,7 @@ let majorVersion = "6";
     javaAwtGtk = langJava && x11Support;
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -345,7 +345,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/7/default.nix b/pkgs/development/compilers/gcc/7/default.nix
index 1eb23061f64..1abf14c8a8c 100644
--- a/pkgs/development/compilers/gcc/7/default.nix
+++ b/pkgs/development/compilers/gcc/7/default.nix
@@ -87,7 +87,7 @@ let majorVersion = "7";
       ++ [ ../libsanitizer-no-cyclades-9.patch ];
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -301,7 +301,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/8/default.nix b/pkgs/development/compilers/gcc/8/default.nix
index b6c37c77dd0..2dd265b648c 100644
--- a/pkgs/development/compilers/gcc/8/default.nix
+++ b/pkgs/development/compilers/gcc/8/default.nix
@@ -71,7 +71,7 @@ let majorVersion = "8";
       ++ [ ../libsanitizer-no-cyclades-9.patch ];
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -280,7 +280,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/9/default.nix b/pkgs/development/compilers/gcc/9/default.nix
index 09e4ef3fdff..2ecfa1bb1cf 100644
--- a/pkgs/development/compilers/gcc/9/default.nix
+++ b/pkgs/development/compilers/gcc/9/default.nix
@@ -98,7 +98,7 @@ let majorVersion = "9";
       ++ [ ../libsanitizer-no-cyclades-9.patch ];
 
     /* Cross-gcc settings (build == host != target) */
-    crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+    crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
     stageNameAddon = if crossStageStatic then "stage-static" else "stage-final";
     crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
 
@@ -311,7 +311,7 @@ stdenv.mkDerivation ({
   };
 }
 
-// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.isMinGW && crossStageStatic) {
+// optionalAttrs (targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt" && crossStageStatic) {
   makeFlags = [ "all-gcc" "all-target-libgcc" ];
   installTargets = "install-gcc install-target-libgcc";
 }
diff --git a/pkgs/development/compilers/gcc/common/configure-flags.nix b/pkgs/development/compilers/gcc/common/configure-flags.nix
index 100d172403a..bebf91114d7 100644
--- a/pkgs/development/compilers/gcc/common/configure-flags.nix
+++ b/pkgs/development/compilers/gcc/common/configure-flags.nix
@@ -41,7 +41,7 @@ let
   inherit (stdenv)
     buildPlatform hostPlatform targetPlatform;
 
-  crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
+  crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
   crossDarwin = targetPlatform != hostPlatform && targetPlatform.libc == "libSystem";
 
   targetPrefix = lib.optionalString (stdenv.targetPlatform != stdenv.hostPlatform)
diff --git a/pkgs/development/compilers/llvm/10/bintools/default.nix b/pkgs/development/compilers/llvm/10/bintools/default.nix
index 5735bf5a685..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/10/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/10/bintools/default.nix
@@ -5,7 +5,7 @@ let
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; passthru.isLld = true; } ''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
diff --git a/pkgs/development/compilers/llvm/11/bintools/default.nix b/pkgs/development/compilers/llvm/11/bintools/default.nix
index 5735bf5a685..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/11/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/11/bintools/default.nix
@@ -5,7 +5,7 @@ let
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; passthru.isLld = true; } ''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
diff --git a/pkgs/development/compilers/llvm/12/bintools/default.nix b/pkgs/development/compilers/llvm/12/bintools/default.nix
index 5735bf5a685..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/12/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/12/bintools/default.nix
@@ -5,7 +5,7 @@ let
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; passthru.isLld = true; } ''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
diff --git a/pkgs/development/compilers/llvm/13/bintools/default.nix b/pkgs/development/compilers/llvm/13/bintools/default.nix
index dcdad1af46f..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/13/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/13/bintools/default.nix
@@ -1,17 +1,11 @@
-{ runCommand, stdenv, llvm, lld, version, lib }:
+{ runCommand, stdenv, llvm, lld, version }:
 
 let
   prefix =
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" {
-  preferLocalBuild = true;
-  passthru = {
-    isLld = true;
-    targetPrefix = prefix;
-  };
-} (''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
@@ -32,7 +26,4 @@ in runCommand "llvm-binutils-${version}" {
    ln -s ${llvm}/bin/llvm-strip $out/bin/${prefix}strip
 
    ln -s ${lld}/bin/lld $out/bin/${prefix}ld
-'' + lib.optionalString stdenv.targetPlatform.isWindows ''
-   ln -s ${llvm}/bin/llvm-windres $out/bin/${prefix}windres
-   ln -s ${llvm}/bin/llvm-dlltool $out/bin/${prefix}dlltool
-'')
+''
diff --git a/pkgs/development/compilers/llvm/13/default.nix b/pkgs/development/compilers/llvm/13/default.nix
index b72d4244285..874be111ade 100644
--- a/pkgs/development/compilers/llvm/13/default.nix
+++ b/pkgs/development/compilers/llvm/13/default.nix
@@ -168,7 +168,6 @@ let
       '' + lib.optionalString stdenv.targetPlatform.isWasm ''
         echo "-fno-exceptions" >> $out/nix-support/cc-cflags
       '' + mkExtraBuildCommands cc;
-      isCompilerRT = true;
     };
 
     clangNoLibcxx = wrapCCWith rec {
@@ -183,7 +182,6 @@ let
         echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
         echo "-nostdlib++" >> $out/nix-support/cc-cflags
       '' + mkExtraBuildCommands cc;
-      isCompilerRT = true;
     };
 
     clangNoLibc = wrapCCWith rec {
@@ -197,7 +195,6 @@ let
         echo "-rtlib=compiler-rt" >> $out/nix-support/cc-cflags
         echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
       '' + mkExtraBuildCommands cc;
-      isCompilerRT = true;
     };
 
     clangNoCompilerRt = wrapCCWith rec {
diff --git a/pkgs/development/compilers/llvm/13/libcxx/default.nix b/pkgs/development/compilers/llvm/13/libcxx/default.nix
index c5b8293676a..0ce73ed97af 100644
--- a/pkgs/development/compilers/llvm/13/libcxx/default.nix
+++ b/pkgs/development/compilers/llvm/13/libcxx/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, llvm_meta, src, cmake, python3, fixDarwinDylibNames, version
-, libcxxabi, libunwind
+, libcxxabi
 , enableShared ? !stdenv.hostPlatform.isStatic
 
 # If headersOnly is true, the resulting package would only include the headers.
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake python3 ]
     ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
 
-  buildInputs = lib.optionals (!headersOnly) ([ libcxxabi ] ++ lib.optional libcxxabi.useLLVMUnwinder libunwind);
+  buildInputs = lib.optionals (!headersOnly) [ libcxxabi ];
 
   cmakeFlags = [ "-DLIBCXX_CXX_ABI=libcxxabi" ]
     ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1"
@@ -41,13 +41,7 @@ stdenv.mkDerivation rec {
       "-DLIBCXX_ENABLE_THREADS=OFF"
       "-DLIBCXX_ENABLE_FILESYSTEM=OFF"
       "-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
-    ]
-    ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF"
-    ++ lib.optionals (!headersOnly && libcxxabi.semi-static) [
-      "-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=TRUE"
-      "-DLIBCXX_CXX_ABI_LIBRARY_PATH=${libcxxabi}/lib"
-    ] ++ lib.optional (!headersOnly && libcxxabi.useLLVMUnwinder)
-      "-DLIBCXXABI_USE_LLVM_UNWINDER=ON";
+    ] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF";
 
   buildFlags = lib.optional headersOnly "generate-cxx-headers";
   installTargets = lib.optional headersOnly "install-cxx-headers";
diff --git a/pkgs/development/compilers/llvm/13/libcxxabi/default.nix b/pkgs/development/compilers/llvm/13/libcxxabi/default.nix
index 66ec96e3518..0bdbee07b73 100644
--- a/pkgs/development/compilers/llvm/13/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/13/libcxxabi/default.nix
@@ -2,14 +2,9 @@
 , enableShared ? !stdenv.hostPlatform.isStatic
 , standalone ? stdenv.hostPlatform.useLLVM or false
 , withLibunwind ? !stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm
-}: let
-  # lld doesn't support unresolved references on Windows https://github.com/llvm/llvm-project/issues/55245
-  semi-static = enableShared && stdenv.hostPlatform.isWindows && stdenv.cc.bintools.isLld;
+}:
 
-  enableShared' = enableShared && !semi-static;
-
-  useLLVMUnwinder = standalone && withLibunwind;
-in stdenv.mkDerivation rec {
+stdenv.mkDerivation rec {
   pname = "libcxxabi";
   inherit version;
 
@@ -31,24 +26,18 @@ in stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake python3 ];
   buildInputs = lib.optional withLibunwind libunwind;
 
-  passthru = { inherit semi-static useLLVMUnwinder; };
-
   cmakeFlags = [
     "-DLIBCXXABI_LIBCXX_INCLUDES=${cxx-headers}/include/c++/v1"
   ] ++ lib.optionals standalone [
     "-DLLVM_ENABLE_LIBCXX=ON"
-  ] ++ lib.optionals useLLVMUnwinder [
+  ] ++ lib.optionals (standalone && withLibunwind) [
     "-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
   ] ++ lib.optionals stdenv.hostPlatform.isWasm [
     "-DLIBCXXABI_ENABLE_THREADS=OFF"
     "-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF"
-  ] ++ lib.optionals (!enableShared') [
+  ] ++ lib.optionals (!enableShared) [
     "-DLIBCXXABI_ENABLE_SHARED=OFF"
-  ] ++ lib.optionals semi-static [
-    "-DLIBCXX_ENABLE_SHARED=ON"
-    "-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON"
-  ] ++ lib.optional stdenv.cc.isCompilerRT
-    "-DLIBCXXABI_USE_COMPILER_RT=ON";
+  ];
 
   installPhase = if stdenv.isDarwin
     then ''
@@ -67,7 +56,7 @@ in stdenv.mkDerivation rec {
       install -d -m 755 $out/include $out/lib
       install -m 644 lib/libc++abi.a $out/lib
       install -m 644 ../include/cxxabi.h $out/include
-    '' + lib.optionalString enableShared' ''
+    '' + lib.optionalString enableShared ''
       install -m 644 lib/libc++abi.so.1.0 $out/lib
       ln -s libc++abi.so.1.0 $out/lib/libc++abi.so
       ln -s libc++abi.so.1.0 $out/lib/libc++abi.so.1
diff --git a/pkgs/development/compilers/llvm/13/libunwind/default.nix b/pkgs/development/compilers/llvm/13/libunwind/default.nix
index c6cc148239e..b6017e74172 100644
--- a/pkgs/development/compilers/llvm/13/libunwind/default.nix
+++ b/pkgs/development/compilers/llvm/13/libunwind/default.nix
@@ -17,9 +17,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags =
-     lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF"
-  ++ lib.optional (stdenv.cc.isCompilerRT) "-DLIBUNWIND_USE_COMPILER_RT=TRUE";
+  cmakeFlags = lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
 
   meta = llvm_meta // {
     # Details: https://github.com/llvm/llvm-project/blob/main/libunwind/docs/index.rst
diff --git a/pkgs/development/compilers/llvm/14/bintools/default.nix b/pkgs/development/compilers/llvm/14/bintools/default.nix
index dcdad1af46f..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/14/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/14/bintools/default.nix
@@ -1,17 +1,11 @@
-{ runCommand, stdenv, llvm, lld, version, lib }:
+{ runCommand, stdenv, llvm, lld, version }:
 
 let
   prefix =
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" {
-  preferLocalBuild = true;
-  passthru = {
-    isLld = true;
-    targetPrefix = prefix;
-  };
-} (''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
@@ -32,7 +26,4 @@ in runCommand "llvm-binutils-${version}" {
    ln -s ${llvm}/bin/llvm-strip $out/bin/${prefix}strip
 
    ln -s ${lld}/bin/lld $out/bin/${prefix}ld
-'' + lib.optionalString stdenv.targetPlatform.isWindows ''
-   ln -s ${llvm}/bin/llvm-windres $out/bin/${prefix}windres
-   ln -s ${llvm}/bin/llvm-dlltool $out/bin/${prefix}dlltool
-'')
+''
diff --git a/pkgs/development/compilers/llvm/14/default.nix b/pkgs/development/compilers/llvm/14/default.nix
index 5df6bcae47e..b18b558d5b8 100644
--- a/pkgs/development/compilers/llvm/14/default.nix
+++ b/pkgs/development/compilers/llvm/14/default.nix
@@ -169,7 +169,6 @@ let
           (!stdenv.targetPlatform.isWasm && stdenv.targetPlatform.useLLVM or false)
           "-lunwind"
         ++ lib.optional stdenv.targetPlatform.isWasm "-fno-exceptions";
-      isCompilerRT = true;
     };
 
     clangNoLibcxx = wrapCCWith rec {
@@ -185,7 +184,6 @@ let
         "-B${targetLlvmLibraries.compiler-rt}/lib"
         "-nostdlib++"
       ];
-      isCompilerRT = true;
     };
 
     clangNoLibc = wrapCCWith rec {
@@ -200,7 +198,6 @@ let
         "-rtlib=compiler-rt"
         "-B${targetLlvmLibraries.compiler-rt}/lib"
       ];
-      isCompilerRT = true;
     };
 
     clangNoCompilerRt = wrapCCWith rec {
diff --git a/pkgs/development/compilers/llvm/14/libcxx/default.nix b/pkgs/development/compilers/llvm/14/libcxx/default.nix
index 8bdc7aa7967..8891a69937a 100644
--- a/pkgs/development/compilers/llvm/14/libcxx/default.nix
+++ b/pkgs/development/compilers/llvm/14/libcxx/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, llvm_meta
 , monorepoSrc, runCommand
 , cmake, python3, fixDarwinDylibNames, version
-, libcxxabi, libunwind
+, libcxxabi
 , enableShared ? !stdenv.hostPlatform.isStatic
 
 # If headersOnly is true, the resulting package would only include the headers.
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake python3 ]
     ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
 
-  buildInputs = lib.optionals (!headersOnly) ([ libcxxabi ] ++ lib.optional libcxxabi.useLLVMUnwinder libunwind);
+  buildInputs = lib.optionals (!headersOnly) [ libcxxabi ];
 
   cmakeFlags = [ "-DLIBCXX_CXX_ABI=libcxxabi" ]
     ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1"
@@ -57,13 +57,7 @@ stdenv.mkDerivation rec {
       "-DLIBCXX_ENABLE_THREADS=OFF"
       "-DLIBCXX_ENABLE_FILESYSTEM=OFF"
       "-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
-    ]
-    ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF"
-    ++ lib.optionals (!headersOnly && libcxxabi.semi-static) [
-      "-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=TRUE"
-      "-DLIBCXX_CXX_ABI_LIBRARY_PATH=${libcxxabi}/lib"
-    ] ++ lib.optional (!headersOnly && libcxxabi.useLLVMUnwinder)
-      "-DLIBCXXABI_USE_LLVM_UNWINDER=ON";
+    ] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF";
 
   buildFlags = lib.optional headersOnly "generate-cxx-headers";
   installTargets = lib.optional headersOnly "install-cxx-headers";
diff --git a/pkgs/development/compilers/llvm/14/libcxxabi/default.nix b/pkgs/development/compilers/llvm/14/libcxxabi/default.nix
index c31c4c90ad2..07aaa2737ce 100644
--- a/pkgs/development/compilers/llvm/14/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/14/libcxxabi/default.nix
@@ -2,17 +2,9 @@
 , monorepoSrc, runCommand
 , cxx-headers, libunwind, version
 , enableShared ? !stdenv.hostPlatform.isStatic
-}: let
-  withLibunwind = !stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm;
+}:
 
-  semi-static = enableShared && stdenv.hostPlatform.isWindows && stdenv.cc.bintools.isLld;
-
-  enableShared' = enableShared && !semi-static;
-
-  standalone = stdenv.hostPlatform.useLLVM or false;
-
-  useLLVMUnwinder = standalone && withLibunwind;
-in stdenv.mkDerivation rec {
+stdenv.mkDerivation rec {
   pname = "libcxxabi";
   inherit version;
 
@@ -43,26 +35,19 @@ in stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake python3 ];
-  buildInputs = lib.optional withLibunwind libunwind;
-
-  passthru = { inherit semi-static useLLVMUnwinder; };
+  buildInputs = lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm) libunwind;
 
   cmakeFlags = [
     "-DLIBCXXABI_LIBCXX_INCLUDES=${cxx-headers}/include/c++/v1"
-  ] ++ lib.optionals standalone [
+  ] ++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [
     "-DLLVM_ENABLE_LIBCXX=ON"
-  ] ++ lib.optionals useLLVMUnwinder [
     "-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
   ] ++ lib.optionals stdenv.hostPlatform.isWasm [
     "-DLIBCXXABI_ENABLE_THREADS=OFF"
     "-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF"
-  ] ++ lib.optionals (!enableShared') [
+  ] ++ lib.optionals (!enableShared) [
     "-DLIBCXXABI_ENABLE_SHARED=OFF"
-  ] ++ lib.optionals semi-static [
-    "-DLIBCXX_ENABLE_SHARED=ON"
-    "-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON"
-  ] ++ lib.optional stdenv.cc.isCompilerRT
-    "-DLIBCXXABI_USE_COMPILER_RT=ON";
+  ];
 
   installPhase = if stdenv.isDarwin
     then ''
@@ -81,7 +66,7 @@ in stdenv.mkDerivation rec {
       install -d -m 755 $out/include $out/lib
       install -m 644 lib/libc++abi.a $out/lib
       install -m 644 ../include/cxxabi.h $out/include
-    '' + lib.optionalString enableShared' ''
+    '' + lib.optionalString enableShared ''
       install -m 644 lib/libc++abi.so.1.0 $out/lib
       ln -s libc++abi.so.1.0 $out/lib/libc++abi.so
       ln -s libc++abi.so.1.0 $out/lib/libc++abi.so.1
diff --git a/pkgs/development/compilers/llvm/14/libunwind/default.nix b/pkgs/development/compilers/llvm/14/libunwind/default.nix
index 7940fa4b3a1..109b92f1e02 100644
--- a/pkgs/development/compilers/llvm/14/libunwind/default.nix
+++ b/pkgs/development/compilers/llvm/14/libunwind/default.nix
@@ -31,9 +31,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags =
-     lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF"
-  ++ lib.optional (stdenv.cc.isCompilerRT) "-DLIBUNWIND_USE_COMPILER_RT=TRUE";
+  cmakeFlags = lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
 
   meta = llvm_meta // {
     # Details: https://github.com/llvm/llvm-project/blob/main/libunwind/docs/index.rst
diff --git a/pkgs/development/compilers/llvm/7/bintools/default.nix b/pkgs/development/compilers/llvm/7/bintools/default.nix
index 5735bf5a685..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/7/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/7/bintools/default.nix
@@ -5,7 +5,7 @@ let
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; passthru.isLld = true; } ''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
diff --git a/pkgs/development/compilers/llvm/8/bintools/default.nix b/pkgs/development/compilers/llvm/8/bintools/default.nix
index 5735bf5a685..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/8/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/8/bintools/default.nix
@@ -5,7 +5,7 @@ let
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; passthru.isLld = true; } ''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
diff --git a/pkgs/development/compilers/llvm/9/bintools/default.nix b/pkgs/development/compilers/llvm/9/bintools/default.nix
index 5735bf5a685..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/9/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/9/bintools/default.nix
@@ -5,7 +5,7 @@ let
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; passthru.isLld = true; } ''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
diff --git a/pkgs/development/compilers/llvm/git/bintools/default.nix b/pkgs/development/compilers/llvm/git/bintools/default.nix
index dcdad1af46f..53f7941e336 100644
--- a/pkgs/development/compilers/llvm/git/bintools/default.nix
+++ b/pkgs/development/compilers/llvm/git/bintools/default.nix
@@ -1,17 +1,11 @@
-{ runCommand, stdenv, llvm, lld, version, lib }:
+{ runCommand, stdenv, llvm, lld, version }:
 
 let
   prefix =
     if stdenv.hostPlatform != stdenv.targetPlatform
     then "${stdenv.targetPlatform.config}-"
     else "";
-in runCommand "llvm-binutils-${version}" {
-  preferLocalBuild = true;
-  passthru = {
-    isLld = true;
-    targetPrefix = prefix;
-  };
-} (''
+in runCommand "llvm-binutils-${version}" { preferLocalBuild = true; } ''
    mkdir -p $out/bin
    for prog in ${lld}/bin/*; do
      ln -s $prog $out/bin/${prefix}$(basename $prog)
@@ -32,7 +26,4 @@ in runCommand "llvm-binutils-${version}" {
    ln -s ${llvm}/bin/llvm-strip $out/bin/${prefix}strip
 
    ln -s ${lld}/bin/lld $out/bin/${prefix}ld
-'' + lib.optionalString stdenv.targetPlatform.isWindows ''
-   ln -s ${llvm}/bin/llvm-windres $out/bin/${prefix}windres
-   ln -s ${llvm}/bin/llvm-dlltool $out/bin/${prefix}dlltool
-'')
+''
diff --git a/pkgs/development/compilers/llvm/git/default.nix b/pkgs/development/compilers/llvm/git/default.nix
index 6b96190c042..0f45acffb27 100644
--- a/pkgs/development/compilers/llvm/git/default.nix
+++ b/pkgs/development/compilers/llvm/git/default.nix
@@ -168,7 +168,6 @@ let
       '' + lib.optionalString stdenv.targetPlatform.isWasm ''
         echo "-fno-exceptions" >> $out/nix-support/cc-cflags
       '' + mkExtraBuildCommands cc;
-      isCompilerRT = true;
     };
 
     clangNoLibcxx = wrapCCWith rec {
@@ -183,7 +182,6 @@ let
         echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
         echo "-nostdlib++" >> $out/nix-support/cc-cflags
       '' + mkExtraBuildCommands cc;
-      isCompilerRT = true;
     };
 
     clangNoLibc = wrapCCWith rec {
@@ -197,7 +195,6 @@ let
         echo "-rtlib=compiler-rt" >> $out/nix-support/cc-cflags
         echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
       '' + mkExtraBuildCommands cc;
-      isCompilerRT = true;
     };
 
     clangNoCompilerRt = wrapCCWith rec {
diff --git a/pkgs/development/compilers/llvm/git/libcxx/default.nix b/pkgs/development/compilers/llvm/git/libcxx/default.nix
index 774bd8a9a9b..8891a69937a 100644
--- a/pkgs/development/compilers/llvm/git/libcxx/default.nix
+++ b/pkgs/development/compilers/llvm/git/libcxx/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, llvm_meta
 , monorepoSrc, runCommand
 , cmake, python3, fixDarwinDylibNames, version
-, libcxxabi, libunwind
+, libcxxabi
 , enableShared ? !stdenv.hostPlatform.isStatic
 
 # If headersOnly is true, the resulting package would only include the headers.
@@ -48,7 +48,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake python3 ]
     ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
 
-  buildInputs = lib.optionals (!headersOnly) ([ libcxxabi ] ++ lib.optional libcxxabi.useLLVMUnwinder libunwind);
+  buildInputs = lib.optionals (!headersOnly) [ libcxxabi ];
 
   cmakeFlags = [ "-DLIBCXX_CXX_ABI=libcxxabi" ]
     ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1"
@@ -57,14 +57,7 @@ stdenv.mkDerivation rec {
       "-DLIBCXX_ENABLE_THREADS=OFF"
       "-DLIBCXX_ENABLE_FILESYSTEM=OFF"
       "-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
-    ]
-    ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF"
-    ++ lib.optionals (!headersOnly && libcxxabi.semi-static) [
-      "-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=TRUE"
-      "-DLIBCXX_CXX_ABI_LIBRARY_PATH=${libcxxabi}/lib"
-    ] ++ lib.optional (!headersOnly && libcxxabi.useLLVMUnwinder)
-      "-DLIBCXXABI_USE_LLVM_UNWINDER=ON";
-
+    ] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF";
 
   buildFlags = lib.optional headersOnly "generate-cxx-headers";
   installTargets = lib.optional headersOnly "install-cxx-headers";
diff --git a/pkgs/development/compilers/llvm/git/libcxxabi/default.nix b/pkgs/development/compilers/llvm/git/libcxxabi/default.nix
index 26388e42f22..d64708ab040 100644
--- a/pkgs/development/compilers/llvm/git/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/git/libcxxabi/default.nix
@@ -2,17 +2,7 @@
 , monorepoSrc, runCommand
 , cxx-headers, libunwind, version
 , enableShared ? !stdenv.hostPlatform.isStatic
-}: let
-  withLibunwind = !stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm;
-
-  semi-static = enableShared && stdenv.hostPlatform.isWindows && stdenv.cc.bintools.isLld;
-
-  enableShared' = enableShared && !semi-static;
-
-  standalone = stdenv.hostPlatform.useLLVM or false;
-
-  useLLVMUnwinder = standalone && withLibunwind;
-in
+}:
 
 stdenv.mkDerivation rec {
   pname = "libcxxabi";
@@ -45,27 +35,19 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake python3 ];
-  buildInputs = lib.optional withLibunwind libunwind;
-
-  passthru = { inherit semi-static useLLVMUnwinder; };
-
+  buildInputs = lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm) libunwind;
 
   cmakeFlags = [
     "-DLIBCXXABI_LIBCXX_INCLUDES=${cxx-headers}/include/c++/v1"
-  ] ++ lib.optionals standalone [
+  ] ++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [
     "-DLLVM_ENABLE_LIBCXX=ON"
-  ] ++ lib.optionals useLLVMUnwinder [
     "-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
   ] ++ lib.optionals stdenv.hostPlatform.isWasm [
     "-DLIBCXXABI_ENABLE_THREADS=OFF"
     "-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF"
-  ] ++ lib.optionals (!enableShared') [
+  ] ++ lib.optionals (!enableShared) [
     "-DLIBCXXABI_ENABLE_SHARED=OFF"
-  ] ++ lib.optionals semi-static [
-    "-DLIBCXX_ENABLE_SHARED=ON"
-    "-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON"
-  ] ++ lib.optional stdenv.cc.isCompilerRT
-    "-DLIBCXXABI_USE_COMPILER_RT=ON";
+  ];
 
   installPhase = if stdenv.isDarwin
     then ''
@@ -84,7 +66,7 @@ stdenv.mkDerivation rec {
       install -d -m 755 $out/include $out/lib
       install -m 644 lib/libc++abi.a $out/lib
       install -m 644 ../include/cxxabi.h $out/include
-    '' + lib.optionalString enableShared' ''
+    '' + lib.optionalString enableShared ''
       install -m 644 lib/libc++abi.so.1.0 $out/lib
       ln -s libc++abi.so.1.0 $out/lib/libc++abi.so
       ln -s libc++abi.so.1.0 $out/lib/libc++abi.so.1
diff --git a/pkgs/development/compilers/llvm/git/libunwind/default.nix b/pkgs/development/compilers/llvm/git/libunwind/default.nix
index 30874588d8d..c6d9eda5e47 100644
--- a/pkgs/development/compilers/llvm/git/libunwind/default.nix
+++ b/pkgs/development/compilers/llvm/git/libunwind/default.nix
@@ -31,9 +31,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags =
-     lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF"
-  ++ lib.optional stdenv.cc.isCompilerRT "-DLIBUNWIND_USE_COMPILER_RT=TRUE";
+  cmakeFlags = lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
 
   meta = llvm_meta // {
     # Details: https://github.com/llvm/llvm-project/blob/main/libunwind/docs/index.rst
diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index d54cd24492d..b9bdec0cd07 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -9,7 +9,7 @@
 , enableDebug ? false
 , enableSingleThreaded ? false
 , enableMultiThreaded ? true
-, enableShared ? !(with stdenv.hostPlatform; isStatic || isMinGW) # problems for now
+, enableShared ? !(with stdenv.hostPlatform; isStatic || libc == "msvcrt") # problems for now
 , enableStatic ? !enableShared
 , enablePython ? false
 , enableNumpy ? false
@@ -103,7 +103,7 @@ let
     ++ optional (toolset != null) "toolset=${toolset}"
     ++ optional (!enablePython) "--without-python"
     ++ optional needUserConfig "--user-config=user-config.jam"
-    ++ optionals (stdenv.hostPlatform.isMinGW) [
+    ++ optionals (stdenv.hostPlatform.libc == "msvcrt") [
     "threadapi=win32"
   ] ++ extraB2Args
   );
@@ -257,7 +257,7 @@ stdenv.mkDerivation {
     # Make boost header paths relative so that they are not runtime dependencies
     cd "$dev" && find include \( -name '*.hpp' -or -name '*.h' -or -name '*.ipp' \) \
       -exec sed '1s/^\xef\xbb\xbf//;1i#line 1 "{}"' -i '{}' \;
-  '' + optionalString (stdenv.hostPlatform.isMinGW) ''
+  '' + optionalString (stdenv.hostPlatform.libc == "msvcrt") ''
     $RANLIB "$out/lib/"*.a
   '';
 
diff --git a/pkgs/development/libraries/gmp/6.x.nix b/pkgs/development/libraries/gmp/6.x.nix
index 838fe432caf..af4f15a151f 100644
--- a/pkgs/development/libraries/gmp/6.x.nix
+++ b/pkgs/development/libraries/gmp/6.x.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchurl, m4
 , cxx ? !stdenv.hostPlatform.useAndroidPrebuilt && !stdenv.hostPlatform.isWasm
-, buildPackages, autoreconfHook
+, buildPackages
 , withStatic ? stdenv.hostPlatform.isStatic
 }:
 
@@ -29,7 +29,7 @@ let self = stdenv.mkDerivation rec {
   passthru.static = self.out;
 
   depsBuildBuild = [ buildPackages.stdenv.cc ];
-  nativeBuildInputs = [ m4 ] ++ lib.optional stdenv.hostPlatform.isWindows autoreconfHook;
+  nativeBuildInputs = [ m4 ];
 
   configureFlags = [
     "--with-pic"
diff --git a/pkgs/development/libraries/libffi/default.nix b/pkgs/development/libraries/libffi/default.nix
index 890fb9f62e4..6a22d585fbc 100644
--- a/pkgs/development/libraries/libffi/default.nix
+++ b/pkgs/development/libraries/libffi/default.nix
@@ -32,9 +32,7 @@ stdenv.mkDerivation rec {
     # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/6155
     # https://gitlab.gnome.org/GNOME/gobject-introspection/-/merge_requests/283
     "--disable-exec-static-tramp"
-  ] ++
-    # ld.lld on Windows doesn't support --version-script.
-    lib.optional (stdenv.hostPlatform.isWindows && stdenv.cc.bintools.isLld) "--disable-symvers";
+  ];
 
   preCheck = ''
     # The tests use -O0 which is not compatible with -D_FORTIFY_SOURCE.
@@ -47,8 +45,6 @@ stdenv.mkDerivation rec {
 
   checkInputs = [ dejagnu ];
 
-  nativeBuildInputs = lib.optional stdenv.hostPlatform.isWindows autoreconfHook;
-
   meta = with lib; {
     description = "A foreign function call interface library";
     longDescription = ''
diff --git a/pkgs/development/libraries/libiconv/default.nix b/pkgs/development/libraries/libiconv/default.nix
index 8051cf319e9..5be5ecfd82e 100644
--- a/pkgs/development/libraries/libiconv/default.nix
+++ b/pkgs/development/libraries/libiconv/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   ];
 
   postPatch =
-    lib.optionalString ((stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform.isMinGW) || stdenv.cc.nativeLibc)
+    lib.optionalString ((stdenv.hostPlatform != stdenv.buildPlatform && stdenv.hostPlatform.libc == "msvcrt") || stdenv.cc.nativeLibc)
       ''
         sed '/^_GL_WARN_ON_USE (gets/d' -i srclib/stdio.in.h
       ''
diff --git a/pkgs/development/libraries/libjpeg-turbo/default.nix b/pkgs/development/libraries/libjpeg-turbo/default.nix
index 2e400f9a31c..75ec20545ca 100644
--- a/pkgs/development/libraries/libjpeg-turbo/default.nix
+++ b/pkgs/development/libraries/libjpeg-turbo/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
 
   # This is needed by freeimage
   patches = [ ./0001-Compile-transupp.c-as-part-of-the-library.patch ]
-    ++ lib.optional (stdenv.hostPlatform.isMinGW)
+    ++ lib.optional (stdenv.hostPlatform.libc or null == "msvcrt")
     ./mingw-boolean.patch;
 
   outputs = [ "bin" "dev" "dev_private" "out" "man" "doc" ];
diff --git a/pkgs/development/libraries/libxml2/default.nix b/pkgs/development/libraries/libxml2/default.nix
index 8672889d5f0..f0b4d0baf4f 100644
--- a/pkgs/development/libraries/libxml2/default.nix
+++ b/pkgs/development/libraries/libxml2/default.nix
@@ -14,7 +14,7 @@
 , pythonSupport ? enableShared && stdenv.buildPlatform == stdenv.hostPlatform
 , icuSupport ? false
 , icu
-, enableShared ? !stdenv.hostPlatform.isMinGW && !stdenv.hostPlatform.isStatic
+, enableShared ? stdenv.hostPlatform.libc != "msvcrt" && !stdenv.hostPlatform.isStatic
 , enableStatic ? !enableShared
 , gnome
 }:
diff --git a/pkgs/development/libraries/ncurses/default.nix b/pkgs/development/libraries/ncurses/default.nix
index a661f5f216c..2740b95986c 100644
--- a/pkgs/development/libraries/ncurses/default.nix
+++ b/pkgs/development/libraries/ncurses/default.nix
@@ -46,13 +46,7 @@ stdenv.mkDerivation rec {
     ];
 
   # Only the C compiler, and explicitly not C++ compiler needs this flag on solaris:
-  CFLAGS =
-    # Only the C compiler, and explicitly not C++ compiler needs this flag on solaris:
-    /**/ if stdenv.isSunOS then "-D_XOPEN_SOURCE_EXTENDED"
-    # ucrt doesn't support X_OK to access() without this flag
-    else if stdenv.hostPlatform.libc == "ucrt" then "-D__USE_MINGW_ACCESS"
-    else "";
-
+  CFLAGS = lib.optionalString stdenv.isSunOS "-D_XOPEN_SOURCE_EXTENDED";
 
   depsBuildBuild = [
     buildPackages.stdenv.cc
diff --git a/pkgs/development/libraries/zlib/default.nix b/pkgs/development/libraries/zlib/default.nix
index ed7ff17dc3d..9b9938746ca 100644
--- a/pkgs/development/libraries/zlib/default.nix
+++ b/pkgs/development/libraries/zlib/default.nix
@@ -88,7 +88,7 @@ stdenv.mkDerivation (rec {
   ''
     # Non-typical naming confuses libtool which then refuses to use zlib's DLL
     # in some cases, e.g. when compiling libpng.
-  + lib.optionalString (stdenv.hostPlatform.isMinGW && shared) ''
+  + lib.optionalString (stdenv.hostPlatform.libc == "msvcrt" && shared) ''
     ln -s zlib1.dll $out/bin/libz.dll
   '';
 
@@ -101,7 +101,7 @@ stdenv.mkDerivation (rec {
   dontStrip = stdenv.hostPlatform != stdenv.buildPlatform && static;
   configurePlatforms = [];
 
-  installFlags = lib.optionals (stdenv.hostPlatform.isMinGW) [
+  installFlags = lib.optionals (stdenv.hostPlatform.libc == "msvcrt") [
     "BINARY_PATH=$(out)/bin"
     "INCLUDE_PATH=$(dev)/include"
     "LIBRARY_PATH=$(out)/lib"
@@ -112,7 +112,7 @@ stdenv.mkDerivation (rec {
 
   makeFlags = [
     "PREFIX=${stdenv.cc.targetPrefix}"
-  ] ++ lib.optionals (stdenv.hostPlatform.isMinGW) [
+  ] ++ lib.optionals (stdenv.hostPlatform.libc == "msvcrt") [
     "-f" "win32/Makefile.gcc"
   ] ++ lib.optionals shared [
     # Note that as of writing (zlib 1.2.11), this flag only has an effect
@@ -134,6 +134,6 @@ stdenv.mkDerivation (rec {
   preConfigure = ''
     export CHOST=${stdenv.hostPlatform.config}
   '';
-} // lib.optionalAttrs (stdenv.hostPlatform.isMinGW) {
+} // lib.optionalAttrs (stdenv.hostPlatform.libc == "msvcrt") {
   dontConfigure = true;
 })
diff --git a/pkgs/development/tools/misc/binutils/default.nix b/pkgs/development/tools/misc/binutils/default.nix
index 185d9f609c8..88b6d3a705e 100644
--- a/pkgs/development/tools/misc/binutils/default.nix
+++ b/pkgs/development/tools/misc/binutils/default.nix
@@ -203,11 +203,6 @@ stdenv.mkDerivation {
     inherit targetPrefix;
     hasGold = enableGold;
     isGNU = true;
-    # TODO Currently platform.linker == "gold" has no effect outside
-    # of building GHC. If/when that's fixed, these flags should
-    # probably move to the invocations of bintools-wrapper
-    isGold = false;
-    isBfd = true;
   };
 
   meta = with lib; {
diff --git a/pkgs/development/tools/misc/libtool/0002-cygwin-mingw-Create-UAC-manifest-files.mingw.patch b/pkgs/development/tools/misc/libtool/0002-cygwin-mingw-Create-UAC-manifest-files.mingw.patch
deleted file mode 100644
index 310002b8231..00000000000
--- a/pkgs/development/tools/misc/libtool/0002-cygwin-mingw-Create-UAC-manifest-files.mingw.patch
+++ /dev/null
@@ -1,99 +0,0 @@
-[PATCH 2/6] [cygwin|mingw] Create UAC manifest files.
-
-* build-aux/ltmain.in (func_emit_exe_manifest): New function.
-(func_mode_link) [cygwin|mingw]: Create manifest files for wrapper
-and target exe when target name matches heuristic that triggers
-UAC problems for newer win32 OSs. Clean up $cwrapper.manifest on
-error. Ensure manifest files have executable permission.
-(func_mode_uninstall): Clean up manifest files.
-Various reports by Eric Blake, Kai Tietz, and Cesar Strauss.
----
- build-auxltmain.in |   50 ++++++++++++++++++++++++++++++++++++++++++-
- 1 files changed, 48 insertions(+), 2 deletions(-)
-
-diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
-index 0418007..1821779 100644
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -4277,6 +4277,41 @@ EOF
- }
- # end: func_emit_cwrapperexe_src
- 
-+# func_emit_exe_manifest
-+# emit a Win32 UAC manifest for executable on stdout
-+# Must ONLY be called from within func_mode_link because
-+# it depends on a number of variable set therein.
-+func_emit_exe_manifest ()
-+{
-+    cat <<EOF
-+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
-+  <assemblyIdentity version="1.0.0.0"
-+EOF
-+
-+    case $host in
-+    i?86-*-* )   echo '     processorArchitecture="x86"' ;;
-+    ia64-*-* )   echo '     processorArchitecture="ia64"' ;;
-+    x86_64-*-* ) echo '     processorArchitecture="amd64"' ;;
-+    *)           echo '     processorArchitecture="*"' ;;
-+    esac
-+
-+    cat <<EOF
-+     name="$host_os.$PROGRAM.$outputname"
-+     type="win32"/>
-+
-+  <!-- Identify the application security requirements. -->
-+  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
-+    <security>
-+      <requestedPrivileges>
-+        <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
-+      </requestedPrivileges>
-+    </security>
-+  </trustInfo>
-+</assembly>
-+EOF
-+}
-+
- # func_win32_import_lib_p ARG
- # True if ARG is an import lib, as indicated by $file_magic_cmd
- func_win32_import_lib_p ()
-@@ -8237,7 +8272,7 @@ EOF
- 	    cwrappersource="$output_path/$objdir/lt-$output_name.c"
- 	    cwrapper="$output_path/$output_name.exe"
- 	    $RM $cwrappersource $cwrapper
--	    trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15
-+	    trap "$RM $cwrappersource $cwrapper $cwrapper.manifest; exit $EXIT_FAILURE" 1 2 15
- 
- 	    func_emit_cwrapperexe_src > $cwrappersource
- 
-@@ -8257,6 +8292,16 @@ EOF
- 	    $opt_dry_run || {
- 	      # note: this script will not be executed, so do not chmod.
- 	      if test "x$build" = "x$host"; then
-+		# Create the UAC manifests first if necessary (but the
-+		# manifest files must have executable permission regardless).
-+		case $output_name in
-+		  *instal*|*patch*|*setup*|*update*)
-+		    func_emit_exe_manifest > $cwrapper.manifest
-+		    func_emit_exe_manifest > $output_path/$objdir/$output_name.exe.manifest
-+		    chmod +x $cwrapper.manifest
-+		    chmod +x $output_path/$objdir/$output_name.exe.manifest
-+		  ;;
-+		esac
- 		$cwrapper --lt-dump-script > $func_ltwrapper_scriptname_result
- 	      else
- 		func_emit_wrapper no > $func_ltwrapper_scriptname_result
-@@ -8777,8 +8822,9 @@ func_mode_uninstall ()
- 	    # note $name still contains .exe if it was in $file originally
- 	    # as does the version of $file that was added into $rmfiles
- 	    func_append rmfiles " $odir/$name $odir/${name}S.$objext"
-+	    func_append rmfiles " ${name}.manifest $objdir/${name}.manifest"
- 	    if test yes = "$fast_install" && test -n "$relink_command"; then
--	      func_append rmfiles " $odir/lt-$name"
-+	      func_append rmfiles " $odir/lt-$name $objdir/lt-${name}.manifest"
- 	    fi
- 	    if test "X$noexename" != "X$name"; then
- 	      func_append rmfiles " $odir/lt-$noexename.c"
--- 
-1.7.1
-
diff --git a/pkgs/development/tools/misc/libtool/0005-Fix-seems-to-be-moved.patch b/pkgs/development/tools/misc/libtool/0005-Fix-seems-to-be-moved.patch
deleted file mode 100644
index 73c249db391..00000000000
--- a/pkgs/development/tools/misc/libtool/0005-Fix-seems-to-be-moved.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-[PATCH 5/6] Fix "seems to be moved"
-* build-aux/ltmain.in (func_mode_link): Compare files by inode
-to fix "seems to be moved" warning.
----
- build-aux/ltmain.in |    4 +++-
- 1 files changed, 3 insertions(+), 1 deletions(-)
-
-diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
-index af46cb8..244bb5b 100644
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -6283,7 +6283,9 @@ func_mode_link ()
- 		  eval libdir=`$SED -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
- 		  test -z "$libdir" && \
- 		    func_fatal_error "'$deplib' is not a valid libtool archive"
--		  test "$absdir" != "$libdir" && \
-+		  abs_inode=`ls -i "$deplib" | awk '{print $1}'`
-+		    lib_inode=`ls -i "$libdir/$(basename $deplib)" | awk '{print $1}'`
-+		  test "$abs_inode" != "$lib_inode" && \
- 		    func_warning "'$deplib' seems to be moved"
- 
- 		  path=-L$absdir
--- 
-1.7.0.2.msysgit.0
\ No newline at end of file
diff --git a/pkgs/development/tools/misc/libtool/0006-Fix-strict-ansi-vs-posix.patch b/pkgs/development/tools/misc/libtool/0006-Fix-strict-ansi-vs-posix.patch
deleted file mode 100644
index 486ad76112e..00000000000
--- a/pkgs/development/tools/misc/libtool/0006-Fix-strict-ansi-vs-posix.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-[PATCH 6/6] Fix STRICT_ANSI vs POSIX
-* build-aux/ltmain.in (func_mode_link): Also check for _POSIX
-as well as __STRICT_ANSI__ to avoid re-definitions.
----
- build-aux/ltmain.in |    4 +++-
- 1 files changed, 1 insertions(+), 1 deletions(-)
-
-diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
-index af46cb8..244bb5b 100644
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -3382,7 +3382,7 @@
- 
- /* declarations of non-ANSI functions */
- #if defined __MINGW32__
--# ifdef __STRICT_ANSI__
-+# if defined(__STRICT_ANSI__) && !defined(__MINGW64_VERSION_MAJOR) || defined(_POSIX_)
- int _putenv (const char *);
- # endif
- #elif defined __CYGWIN__
--- 
-1.7.0.2.msysgit.0
\ No newline at end of file
diff --git a/pkgs/development/tools/misc/libtool/0007-fix-cr-for-awk-in-configure.all.patch b/pkgs/development/tools/misc/libtool/0007-fix-cr-for-awk-in-configure.all.patch
deleted file mode 100644
index 65d5185a36f..00000000000
--- a/pkgs/development/tools/misc/libtool/0007-fix-cr-for-awk-in-configure.all.patch
+++ /dev/null
@@ -1,22 +0,0 @@
---- libtool-2.4.2/configure.orig	2011-10-17 10:18:58.000000000 +0000
-+++ libtool-2.4.2/configure	2013-08-04 19:01:30.220494400 +0000
-@@ -28825,7 +28825,7 @@
- fi
- ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
- if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
--  ac_cs_awk_cr='\\r'
-+  ac_cs_awk_cr='\r'
- else
-   ac_cs_awk_cr=$ac_cr
- fi
---- libtool-2.4.2/libltdl/configure.orig	2011-10-17 10:19:47.000000000 +0000
-+++ libtool-2.4.2/libltdl/configure	2013-08-05 11:49:24.990792500 +0000
-@@ -13574,7 +13574,7 @@
- fi
- ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
- if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
--  ac_cs_awk_cr='\\r'
-+  ac_cs_awk_cr='\r'
- else
-   ac_cs_awk_cr=$ac_cr
- fi
diff --git a/pkgs/development/tools/misc/libtool/0010-libtool-2.4.2-include-process-h.patch b/pkgs/development/tools/misc/libtool/0010-libtool-2.4.2-include-process-h.patch
deleted file mode 100644
index 82ecf5266b7..00000000000
--- a/pkgs/development/tools/misc/libtool/0010-libtool-2.4.2-include-process-h.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
-index 0418007..91276c2 100644
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -4163,6 +4163,7 @@
- # include <unistd.h>
- # include <stdint.h>
- # ifdef __CYGWIN__
-+#  include <process.h>
- #  include <io.h>
- # endif
- #endif
-diff --git a/build-aux/ltmain.sh b/build-aux/ltmain.sh
-index 0418007..91276c2 100644
---- a/build-aux/ltmain.sh
-+++ b/build-aux/ltmain.sh
-@@ -4163,6 +4163,7 @@
- # include <unistd.h>
- # include <stdint.h>
- # ifdef __CYGWIN__
-+#  include <process.h>
- #  include <io.h>
- # endif
- #endif
diff --git a/pkgs/development/tools/misc/libtool/0011-Pick-up-clang_rt-static-archives-compiler-internal-l.patch b/pkgs/development/tools/misc/libtool/0011-Pick-up-clang_rt-static-archives-compiler-internal-l.patch
deleted file mode 100644
index 49cc0706551..00000000000
--- a/pkgs/development/tools/misc/libtool/0011-Pick-up-clang_rt-static-archives-compiler-internal-l.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-From a18473ed4e5574dab899db640b8efeff78939b54 Mon Sep 17 00:00:00 2001
-From: Manoj Gupta <manojgupta@chromium.org>
-Date: Wed, 10 Oct 2018 10:50:23 +0300
-Subject: [PATCH 1/2] Pick up clang_rt static archives compiler internal
- libraries
-
-Libtool checks only for libraries linked as -l* when trying to
-find internal compiler libraries. Clang, however uses the absolute
-path to link its internal libraries e.g. compiler_rt. This patch
-handles clang's statically linked libraries when finding internal
-compiler libraries.
-https://crbug.com/749263
-https://debbugs.gnu.org/cgi/bugreport.cgi?bug=27866
----
- m4/libtool.m4 | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/m4/libtool.m4 b/m4/libtool.m4
-index b55a6e5..d9322d0 100644
---- a/m4/libtool.m4
-+++ b/m4/libtool.m4
-@@ -7556,7 +7556,7 @@ if AC_TRY_EVAL(ac_compile); then
-   for p in `eval "$output_verbose_link_cmd"`; do
-     case $prev$p in
- 
--    -L* | -R* | -l*)
-+    -L* | -R* | -l* | */libclang_rt.*.a)
-        # Some compilers place space between "-{L,R}" and the path.
-        # Remove the space.
-        if test x-L = "$p" ||
--- 
-2.7.4
-
diff --git a/pkgs/development/tools/misc/libtool/0012-Prefer-response-files-over-linker-scripts-for-mingw-.patch b/pkgs/development/tools/misc/libtool/0012-Prefer-response-files-over-linker-scripts-for-mingw-.patch
deleted file mode 100644
index 7bdb62dbfb8..00000000000
--- a/pkgs/development/tools/misc/libtool/0012-Prefer-response-files-over-linker-scripts-for-mingw-.patch
+++ /dev/null
@@ -1,83 +0,0 @@
-From ec15841963ca3aab3bc88fb0932c014337284bfc Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
-Date: Wed, 10 Oct 2018 10:47:21 +0300
-Subject: [PATCH 2/2] Prefer response files over linker scripts for mingw tools
-
-The GCC/binutils tools support response files just fine, while
-lld (impersonating GNU ld) only supports response files, not
-linker scripts. Using a linker script as input just to pass a
-list of files is overkill for cases when a response file is enough.
----
- build-aux/ltmain.in | 28 ++++++++++++++--------------
- m4/libtool.m4       |  2 ++
- 2 files changed, 16 insertions(+), 14 deletions(-)
-
-diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
-index e2fb263..db5d590 100644
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -7932,20 +7932,7 @@ EOF
- 	  last_robj=
- 	  k=1
- 
--	  if test -n "$save_libobjs" && test : != "$skipped_export" && test yes = "$with_gnu_ld"; then
--	    output=$output_objdir/$output_la.lnkscript
--	    func_verbose "creating GNU ld script: $output"
--	    echo 'INPUT (' > $output
--	    for obj in $save_libobjs
--	    do
--	      func_to_tool_file "$obj"
--	      $ECHO "$func_to_tool_file_result" >> $output
--	    done
--	    echo ')' >> $output
--	    func_append delfiles " $output"
--	    func_to_tool_file "$output"
--	    output=$func_to_tool_file_result
--	  elif test -n "$save_libobjs" && test : != "$skipped_export" && test -n "$file_list_spec"; then
-+	  if test -n "$save_libobjs" && test : != "$skipped_export" && test -n "$file_list_spec"; then
- 	    output=$output_objdir/$output_la.lnk
- 	    func_verbose "creating linker input file list: $output"
- 	    : > $output
-@@ -7964,6 +7951,19 @@ EOF
- 	    func_append delfiles " $output"
- 	    func_to_tool_file "$output"
- 	    output=$firstobj\"$file_list_spec$func_to_tool_file_result\"
-+	  elif test -n "$save_libobjs" && test : != "$skipped_export" && test yes = "$with_gnu_ld"; then
-+	    output=$output_objdir/$output_la.lnkscript
-+	    func_verbose "creating GNU ld script: $output"
-+	    echo 'INPUT (' > $output
-+	    for obj in $save_libobjs
-+	    do
-+	      func_to_tool_file "$obj"
-+	      $ECHO "$func_to_tool_file_result" >> $output
-+	    done
-+	    echo ')' >> $output
-+	    func_append delfiles " $output"
-+	    func_to_tool_file "$output"
-+	    output=$func_to_tool_file_result
- 	  else
- 	    if test -n "$save_libobjs"; then
- 	      func_verbose "creating reloadable object files..."
-diff --git a/m4/libtool.m4 b/m4/libtool.m4
-index d9322d0..9046a84 100644
---- a/m4/libtool.m4
-+++ b/m4/libtool.m4
-@@ -5130,6 +5130,7 @@ _LT_EOF
-       _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
-       _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
-       _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
-+      _LT_TAGVAR(file_list_spec, $1)='@'
- 
-       if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
-         _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
-@@ -6706,6 +6707,7 @@ if test yes != "$_lt_caught_CXX_error"; then
- 	  _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- 	  _LT_TAGVAR(always_export_symbols, $1)=no
- 	  _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
-+	  _LT_TAGVAR(file_list_spec, $1)='@'
- 
- 	  if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
- 	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
--- 
-2.7.4
-
diff --git a/pkgs/development/tools/misc/libtool/0013-Allow-statically-linking-compiler-support-libraries-.patch b/pkgs/development/tools/misc/libtool/0013-Allow-statically-linking-compiler-support-libraries-.patch
deleted file mode 100644
index b75b191a7cb..00000000000
--- a/pkgs/development/tools/misc/libtool/0013-Allow-statically-linking-compiler-support-libraries-.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-From b9f77cae8cfbe850e58cac686fcb4d246b5bfc51 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
-Date: Mon, 19 Aug 2019 13:34:51 +0300
-Subject: [PATCH] Allow statically linking compiler support libraries when
- linking a library
-
-For cases with deplibs_check_method="file_magic ..." (as it is for mingw),
-there were previously no way that a static library could be accepted
-here.
----
- build-aux/ltmain.in | 11 +++++++++--
- 1 file changed, 9 insertions(+), 2 deletions(-)
-
-diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
-index e2fb2633..db4d775c 100644
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -5870,8 +5870,15 @@ func_mode_link ()
- 	  fi
- 	  case $linkmode in
- 	  lib)
--	    # Linking convenience modules into shared libraries is allowed,
--	    # but linking other static libraries is non-portable.
-+	    # Linking convenience modules and compiler provided static libraries
-+	    # into shared libraries is allowed, but linking other static
-+	    # libraries is non-portable.
-+	    case $deplib in
-+	      */libgcc*.$libext | */libclang_rt*.$libext)
-+		deplibs="$deplib $deplibs"
-+		continue
-+	      ;;
-+	    esac
- 	    case " $dlpreconveniencelibs " in
- 	    *" $deplib "*) ;;
- 	    *)
--- 
-2.17.1
-
diff --git a/pkgs/development/tools/misc/libtool/0014-Support-llvm-objdump-f-output.patch b/pkgs/development/tools/misc/libtool/0014-Support-llvm-objdump-f-output.patch
deleted file mode 100644
index d6570502d94..00000000000
--- a/pkgs/development/tools/misc/libtool/0014-Support-llvm-objdump-f-output.patch
+++ /dev/null
@@ -1,39 +0,0 @@
-From 03dabb6a70847761e65572a2a7b770a3b1b9f123 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Mateusz=20Miku=C5=82a?= <mati865@gmail.com>
-Date: Mon, 12 Apr 2021 23:44:10 +0200
-Subject: [PATCH] Support llvm-objdump -f output
-
----
- build-aux/ltmain.in | 2 +-
- m4/libtool.m4       | 2 +-
- 2 files changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
-index a9f070a..4a434cc 100644
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -3019,7 +3019,7 @@ func_win32_libid ()
-   *ar\ archive*) # could be an import, or static
-     # Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD.
-     if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null |
--       $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then
-+       $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64|coff-arm|coff-arm64|coff-i386|coff-x86-64)' >/dev/null; then
-       case $nm_interface in
-       "MS dumpbin")
- 	if func_cygming_ms_implib_p "$1" ||
-diff --git a/m4/libtool.m4 b/m4/libtool.m4
-index 21a7d60..594be9c 100644
---- a/m4/libtool.m4
-+++ b/m4/libtool.m4
-@@ -3473,7 +3473,7 @@ mingw* | pw32*)
-     lt_cv_file_magic_cmd='func_win32_libid'
-   else
-     # Keep this pattern in sync with the one in func_win32_libid.
--    lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)'
-+    lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64|coff-arm|coff-arm64|coff-i386|coff-x86-64)'
-     lt_cv_file_magic_cmd='$OBJDUMP -f'
-   fi
-   ;;
--- 
-2.31.1
-
diff --git a/pkgs/development/tools/misc/libtool/libtool2.nix b/pkgs/development/tools/misc/libtool/libtool2.nix
index e2f4e97993d..3d15752fc0a 100644
--- a/pkgs/development/tools/misc/libtool/libtool2.nix
+++ b/pkgs/development/tools/misc/libtool/libtool2.nix
@@ -23,20 +23,6 @@ stdenv.mkDerivation rec {
   #   https://lists.gnu.org/archive/html/autotools-announce/2022-03/msg00000.html
   FILECMD = "${file}/bin/file";
 
-  patches = [
-    # Patches from msys2 fixing various bugs with useClang platforms
-    # targeting Windows. Especially https://debbugs.gnu.org/cgi/bugreport.cgi?bug=27866
-    ./0002-cygwin-mingw-Create-UAC-manifest-files.mingw.patch
-    ./0005-Fix-seems-to-be-moved.patch
-    ./0006-Fix-strict-ansi-vs-posix.patch
-    ./0007-fix-cr-for-awk-in-configure.all.patch
-    ./0010-libtool-2.4.2-include-process-h.patch
-    ./0011-Pick-up-clang_rt-static-archives-compiler-internal-l.patch
-    ./0012-Prefer-response-files-over-linker-scripts-for-mingw-.patch
-    ./0013-Allow-statically-linking-compiler-support-libraries-.patch
-    ./0014-Support-llvm-objdump-f-output.patch
-  ];
-
   # Normally we'd use autoreconfHook, but that includes libtoolize.
   postPatch = ''
     aclocal -I m4
diff --git a/pkgs/os-specific/darwin/binutils/default.nix b/pkgs/os-specific/darwin/binutils/default.nix
index a25306dcf35..c5bc50cafd7 100644
--- a/pkgs/os-specific/darwin/binutils/default.nix
+++ b/pkgs/os-specific/darwin/binutils/default.nix
@@ -65,7 +65,6 @@ stdenv.mkDerivation {
 
   passthru = {
     inherit targetPrefix;
-    isCctools = true;
   };
 
   meta = {
diff --git a/pkgs/os-specific/windows/mingw-w64/default.nix b/pkgs/os-specific/windows/mingw-w64/default.nix
index 02cfd7b04a7..38293e65f70 100644
--- a/pkgs/os-specific/windows/mingw-w64/default.nix
+++ b/pkgs/os-specific/windows/mingw-w64/default.nix
@@ -1,32 +1,14 @@
 { lib, stdenv, windows, fetchurl }:
 
 let
-  version = "10.0.0";
-
-  knownArches = [ "32" "64" "arm32" "arm64" ];
-  enabledArch =
-    if stdenv.targetPlatform.isAarch32
-    then "arm32"
-    else if stdenv.targetPlatform.isAarch64
-    then "arm64"
-    else if stdenv.targetPlatform.isx86_32
-    then "32"
-    else if stdenv.targetPlatform.isx86_64
-    then "64"
-    else null;
-  archFlags =
-    if enabledArch == null
-    then [] # maybe autoconf will save us
-    else map (arch: lib.enableFeature (arch == enabledArch) "lib${arch}") knownArches;
-
-  crt = stdenv.hostPlatform.libc;
+  version = "9.0.0";
 in stdenv.mkDerivation {
   pname = "mingw-w64";
   inherit version;
 
   src = fetchurl {
     url = "mirror://sourceforge/mingw-w64/mingw-w64-v${version}.tar.bz2";
-    sha256 = "sha256-umtDCu1yxjo3aFMfaj/8Kw/eLFejslFFDc9ImolPCJQ=";
+    sha256 = "10a15bi4lyfi0k0haj0klqambicwma6yi7vssgbz8prg815vja8r";
   };
 
   outputs = [ "out" "dev" ];
@@ -34,8 +16,7 @@ in stdenv.mkDerivation {
   configureFlags = [
     "--enable-idl"
     "--enable-secure-api"
-    "--with-default-msvcrt=${crt}"
-  ] ++ archFlags;
+  ];
 
   enableParallelBuilding = true;
 
@@ -45,6 +26,5 @@ in stdenv.mkDerivation {
 
   meta = {
     platforms = lib.platforms.windows;
-    broken = !(lib.elem crt [ "msvcrt" "ucrt" ]);
   };
 }
diff --git a/pkgs/os-specific/windows/mingw-w64/headers.nix b/pkgs/os-specific/windows/mingw-w64/headers.nix
index 13ba330ef2a..1fd27a8c457 100644
--- a/pkgs/os-specific/windows/mingw-w64/headers.nix
+++ b/pkgs/os-specific/windows/mingw-w64/headers.nix
@@ -1,8 +1,6 @@
 { stdenvNoCC, mingw_w64 }:
 
-let
-  crt = stdenvNoCC.hostPlatform.libc;
-in stdenvNoCC.mkDerivation {
+stdenvNoCC.mkDerivation {
   name = "${mingw_w64.name}-headers";
   inherit (mingw_w64) src meta;
 
@@ -10,10 +8,4 @@ in stdenvNoCC.mkDerivation {
     cd mingw-w64-headers
   '';
 
-  configureFlags = [
-    "--enable-idl"
-    "--enable-secure-api"
-    "--with-default-msvcrt=${crt}"
-  ];
-
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3248f770f33..b6a1f5e4570 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17405,7 +17405,7 @@ with pkgs;
   # These are used when buiding compiler-rt / libgcc, prior to building libc.
   preLibcCrossHeaders = let
     inherit (stdenv.targetPlatform) libc;
-  in     if libc == "msvcrt" || libc == "ucrt" then targetPackages.windows.mingw_w64_headers or windows.mingw_w64_headers
+  in     if libc == "msvcrt" then targetPackages.windows.mingw_w64_headers or windows.mingw_w64_headers
     else if libc == "nblibc" then targetPackages.netbsdCross.headers or netbsdCross.headers
     else if libc == "libSystem" && stdenv.targetPlatform.isAarch64 then targetPackages.darwin.LibsystemCross or darwin.LibsystemCross
     else null;
@@ -17424,7 +17424,7 @@ with pkgs;
     else if name == "newlib" then targetPackages.newlibCross or newlibCross
     else if name == "newlib-nano" then targetPackages.newlib-nanoCross or newlib-nanoCross
     else if name == "musl" then targetPackages.muslCross or muslCross
-    else if name == "msvcrt" || name == "ucrt" then targetPackages.windows.mingw_w64 or windows.mingw_w64
+    else if name == "msvcrt" then targetPackages.windows.mingw_w64 or windows.mingw_w64
     else if name == "libSystem" then
       if stdenv.targetPlatform.useiOSPrebuilt
       then targetPackages.darwin.iosSdkPkgs.libraries or darwin.iosSdkPkgs.libraries
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index fac1d546832..c46a7f1bcd2 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -145,6 +145,7 @@ in {
       inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
       buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
       llvmPackages = pkgs.llvmPackages_12;
+      libffi = pkgs.libffi;
     };
 
     ghcjs = compiler.ghcjs810;