darwin: wrap strip and install_name_tool to codesign modified files

Co-authored-by: Moritz Angermann <moritz.angermann@gmail.com>

pkgs/build-support/bintools-wrapper/darwin-install_name_tool-wrapper.sh

@@ -0,0 +1,49 @@
+#! @shell@
+# shellcheck shell=bash
+
+set -eu -o pipefail +o posix
+shopt -s nullglob
+
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
+source @signingUtils@
+
+extraAfter=()
+extraBefore=()
+params=("$@")
+
+input=
+
+pprev=
+prev=
+for p in \
+    ${extraBefore+"${extraBefore[@]}"} \
+    ${params+"${params[@]}"} \
+    ${extraAfter+"${extraAfter[@]}"}
+do
+    if [ "$pprev" != "-change" ] && [[ "$prev" != -* ]] && [[ "$p" != -* ]]; then
+        input="$p"
+    fi
+    pprev="$prev"
+    prev="$p"
+done
+
+# Optionally print debug info.
+if (( "${NIX_DEBUG:-0}" >= 1 )); then
+    # Old bash workaround, see above.
+    echo "extra flags before to @prog@:" >&2
+    printf "  %q\n" ${extraBefore+"${extraBefore[@]}"}  >&2
+    echo "original flags to @prog@:" >&2
+    printf "  %q\n" ${params+"${params[@]}"} >&2
+    echo "extra flags after to @prog@:" >&2
+    printf "  %q\n" ${extraAfter+"${extraAfter[@]}"} >&2
+fi
+
+@prog@ \
+    ${extraBefore+"${extraBefore[@]}"} \
+    ${params+"${params[@]}"} \
+    ${extraAfter+"${extraAfter[@]}"}
+
+sign "$input"

pkgs/build-support/bintools-wrapper/darwin-strip-wrapper.sh

@@ -0,0 +1,78 @@
+#! @shell@
+# shellcheck shell=bash
+
+set -eu -o pipefail +o posix
+shopt -s nullglob
+
+if (( "${NIX_DEBUG:-0}" >= 7 )); then
+    set -x
+fi
+
+source @signingUtils@
+
+extraAfter=()
+extraBefore=()
+params=("$@")
+
+output=
+inputs=()
+
+restAreFiles=
+prev=
+for p in \
+    ${extraBefore+"${extraBefore[@]}"} \
+    ${params+"${params[@]}"} \
+    ${extraAfter+"${extraAfter[@]}"}
+do
+    if [ "$restAreFiles" ]; then
+        inputs+=("$p")
+    else
+        case "$prev" in
+            -s|-R|-d|-arch)
+                # Unrelated arguments with values
+                ;;
+            -o)
+                # Explicit output
+                output="$p"
+                ;;
+            *)
+                # Any other orgument either takes no value, or is a file.
+                if [[ "$p" != -* ]]; then
+                    inputs+=("$p")
+                fi
+                ;;
+        esac
+
+        if [ "$p" == - ]; then
+            restAreFiles=1
+        fi
+    fi
+
+    prev="$p"
+done
+
+# Optionally print debug info.
+if (( "${NIX_DEBUG:-0}" >= 1 )); then
+    # Old bash workaround, see above.
+    echo "extra flags before to @prog@:" >&2
+    printf "  %q\n" ${extraBefore+"${extraBefore[@]}"}  >&2
+    echo "original flags to @prog@:" >&2
+    printf "  %q\n" ${params+"${params[@]}"} >&2
+    echo "extra flags after to @prog@:" >&2
+    printf "  %q\n" ${extraAfter+"${extraAfter[@]}"} >&2
+fi
+
+@prog@ \
+    ${extraBefore+"${extraBefore[@]}"} \
+    ${params+"${params[@]}"} \
+    ${extraAfter+"${extraAfter[@]}"}
+
+if [ "$output" ]; then
+    # Single explicit output
+    signIfRequired "$output"
+else
+    # Multiple inputs, rewritten in place
+    for input in "${inputs[@]}"; do
+      signIfRequired "$input"
+    done
+fi

pkgs/build-support/bintools-wrapper/default.nix

@@ -14,6 +14,9 @@
 , extraPackages ? [], extraBuildCommands ? ""
 , buildPackages ? {}
 , useMacosReexportHack ? false
+
+# Darwin code signing support utilities
+, postLinkSignHook ? null, signingUtils ? null
 }:
 
 with lib;
@@ -339,6 +342,24 @@ stdenv.mkDerivation {
       ''
     )
 
+    ##
+    ## Code signing on Apple Silicon
+    ##
+    + optionalString (targetPlatform.isDarwin && targetPlatform.isAarch64) ''
+      echo 'source ${postLinkSignHook}' >> $out/nix-support/post-link-hook
+
+      export signingUtils=${signingUtils}
+
+      wrap \
+        ${targetPrefix}install_name_tool \
+        ${./darwin-install_name_tool-wrapper.sh} \
+        "${bintools_bin}/bin/${targetPrefix}install_name_tool"
+
+      wrap \
+        ${targetPrefix}strip ${./darwin-strip-wrapper.sh} \
+        "${bintools_bin}/bin/${targetPrefix}strip"
+    ''
+
     ##
     ## Extra custom steps
     ##

pkgs/top-level/all-packages.nix

@@ -11857,6 +11857,7 @@ in
     noLibc = (self.libc == null);
 
     inherit bintools libc;
+    inherit (darwin) postLinkSignHook signingUtils;
   } // extraArgs; in self);
 
   yaml-language-server = nodePackages.yaml-language-server;