diff --git a/pkgs/by-name/gc/gcc-arm-embedded-10/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-10/package.nix
index 7c7ff8a24b47..119c137ffd64 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-10/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-10/package.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     ln -s $out/share/doc/gcc-arm-none-eabi/man $out/man
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-11/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-11/package.nix
index 8cbc326a3f48..bd2525f3d6c6 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-11/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-11/package.nix
@@ -3,9 +3,7 @@
   stdenv,
   fetchurl,
   ncurses5,
-  python39,
   libxcrypt-legacy,
-  runtimeShell,
 }:
 
 stdenv.mkDerivation rec {
@@ -39,9 +37,11 @@ stdenv.mkDerivation rec {
   installPhase = ''
     mkdir -p $out
     cp -r * $out
+    # these binaries require ancient Python 3.8 not available in Nixpkgs
+    rm $out/bin/{arm-none-eabi-gdb-py,arm-none-eabi-gdb-add-index-py} || :
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
@@ -50,24 +50,12 @@ stdenv.mkDerivation rec {
           "$out"
           stdenv.cc.cc
           ncurses5
-          python39
           libxcrypt-legacy
         ]
       } "$f" || true
     done
   '';
 
-  postFixup = ''
-    mv $out/bin/arm-none-eabi-gdb $out/bin/arm-none-eabi-gdb-unwrapped
-    cat <<EOF > $out/bin/arm-none-eabi-gdb
-    #!${runtimeShell}
-    export PYTHONPATH=${python39}/lib/python3.9
-    export PYTHONHOME=${python39.interpreter}
-    exec $out/bin/arm-none-eabi-gdb-unwrapped "\$@"
-    EOF
-    chmod +x $out/bin/arm-none-eabi-gdb
-  '';
-
   meta = with lib; {
     description = "Pre-built GNU toolchain from ARM Cortex-M & Cortex-R processors";
     homepage = "https://developer.arm.com/open-source/gnu-toolchain/gnu-rm";
@@ -79,7 +67,10 @@ stdenv.mkDerivation rec {
       lgpl3
       mit
     ];
-    maintainers = with maintainers; [ prusnak ];
+    maintainers = with maintainers; [
+      prusnak
+      prtzl
+    ];
     platforms = [
       "x86_64-linux"
       "aarch64-linux"
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-12/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-12/package.nix
index 97a122f3034e..73eb2ceff0b2 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-12/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-12/package.nix
@@ -3,9 +3,7 @@
   stdenv,
   fetchurl,
   ncurses5,
-  python39,
   libxcrypt-legacy,
-  runtimeShell,
 }:
 
 stdenv.mkDerivation rec {
@@ -41,9 +39,11 @@ stdenv.mkDerivation rec {
   installPhase = ''
     mkdir -p $out
     cp -r * $out
+    # these binaries require ancient Python 3.8 not available in Nixpkgs
+    rm $out/bin/{arm-none-eabi-gdb-py,arm-none-eabi-gdb-add-index-py} || :
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
@@ -52,24 +52,12 @@ stdenv.mkDerivation rec {
           "$out"
           stdenv.cc.cc
           ncurses5
-          python39
           libxcrypt-legacy
         ]
       } "$f" || true
     done
   '';
 
-  postFixup = ''
-    mv $out/bin/arm-none-eabi-gdb $out/bin/arm-none-eabi-gdb-unwrapped
-    cat <<EOF > $out/bin/arm-none-eabi-gdb
-    #!${runtimeShell}
-    export PYTHONPATH=${python39}/lib/python3.9
-    export PYTHONHOME=${python39.interpreter}
-    exec $out/bin/arm-none-eabi-gdb-unwrapped "\$@"
-    EOF
-    chmod +x $out/bin/arm-none-eabi-gdb
-  '';
-
   meta = with lib; {
     description = "Pre-built GNU toolchain from ARM Cortex-M & Cortex-R processors";
     homepage = "https://developer.arm.com/open-source/gnu-toolchain/gnu-rm";
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-13/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-13/package.nix
index 6eac3bc060ca..2fc5c091f53d 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-13/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-13/package.nix
@@ -3,9 +3,7 @@
   stdenv,
   fetchurl,
   ncurses5,
-  python39,
   libxcrypt-legacy,
-  runtimeShell,
 }:
 
 stdenv.mkDerivation rec {
@@ -42,9 +40,11 @@ stdenv.mkDerivation rec {
   installPhase = ''
     mkdir -p $out
     cp -r * $out
+    # these binaries require ancient Python 3.8 not available in Nixpkgs
+    rm $out/bin/{arm-none-eabi-gdb-py,arm-none-eabi-gdb-add-index-py} || :
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
@@ -53,24 +53,12 @@ stdenv.mkDerivation rec {
           "$out"
           stdenv.cc.cc
           ncurses5
-          python39
           libxcrypt-legacy
         ]
       } "$f" || true
     done
   '';
 
-  postFixup = ''
-    mv $out/bin/arm-none-eabi-gdb $out/bin/arm-none-eabi-gdb-unwrapped
-    cat <<EOF > $out/bin/arm-none-eabi-gdb
-    #!${runtimeShell}
-    export PYTHONPATH=${python39}/lib/python3.9
-    export PYTHONHOME=${python39.interpreter}
-    exec $out/bin/arm-none-eabi-gdb-unwrapped "\$@"
-    EOF
-    chmod +x $out/bin/arm-none-eabi-gdb
-  '';
-
   meta = with lib; {
     description = "Pre-built GNU toolchain from ARM Cortex-M & Cortex-R processors";
     homepage = "https://developer.arm.com/open-source/gnu-toolchain/gnu-rm";
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-14/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-14/package.nix
index ea39b21d97e7..b18edddb55d4 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-14/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-14/package.nix
@@ -4,9 +4,8 @@
   fetchurl,
   ncurses6,
   libxcrypt-legacy,
-  runtimeShell,
-  zstd,
   xz,
+  zstd,
 }:
 
 stdenv.mkDerivation rec {
@@ -57,8 +56,8 @@ stdenv.mkDerivation rec {
           stdenv.cc.cc
           ncurses6
           libxcrypt-legacy
-          zstd
           xz
+          zstd
         ]
       } "$f" || true
     done
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-6/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-6/package.nix
index 70e1481e2dd4..5d6d75f5e461 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-6/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-6/package.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     ln -s $out/share/doc/gcc-arm-none-eabi/man $out/man
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-7/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-7/package.nix
index 10fdd294649c..1d594b3a320b 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-7/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-7/package.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     ln -s $out/share/doc/gcc-arm-none-eabi/man $out/man
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-8/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-8/package.nix
index ff63cb58bd99..57960b832b62 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-8/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-8/package.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
     ln -s $out/share/doc/gcc-arm-none-eabi/man $out/man
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true
diff --git a/pkgs/by-name/gc/gcc-arm-embedded-9/package.nix b/pkgs/by-name/gc/gcc-arm-embedded-9/package.nix
index 3dda27e3b853..04db68661c77 100644
--- a/pkgs/by-name/gc/gcc-arm-embedded-9/package.nix
+++ b/pkgs/by-name/gc/gcc-arm-embedded-9/package.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     ln -s $out/share/doc/gcc-arm-none-eabi/man $out/man
   '';
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     find $out -type f | while read f; do
       patchelf "$f" > /dev/null 2>&1 || continue
       patchelf --set-interpreter $(cat ${stdenv.cc}/nix-support/dynamic-linker) "$f" || true