uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/embedded/blackmagic/default.nix

@@ -0,0 +1,80 @@
+{ stdenv, lib
+, fetchFromGitHub
+, gcc-arm-embedded
+, pkg-config
+, python3
+, hidapi
+, libftdi1
+, libusb1
+}:
+
+stdenv.mkDerivation rec {
+  pname = "blackmagic";
+  version = "unstable-2022-04-16";
+  # `git describe --always`
+  firmwareVersion = "v1.7.1-415-gc4869a5";
+
+  src = fetchFromGitHub {
+    owner = "blacksphere";
+    repo = "blackmagic";
+    rev = "c4869a54733ae92099a7316954e34d1ab7b6097c";
+    hash = "sha256-0MC1v/5u/txSshxkOI5TErMRRrYCcHly3qbVTAk9Vc0=";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [
+    gcc-arm-embedded
+    pkg-config
+    python3
+  ];
+
+  buildInputs = [
+    hidapi
+    libftdi1
+    libusb1
+  ];
+
+  strictDeps = true;
+
+  postPatch = ''
+    # Prevent calling out to `git' to generate a version number:
+    substituteInPlace src/Makefile \
+      --replace '$(shell git describe --always --dirty)' '${firmwareVersion}'
+
+    # Fix scripts that generate headers:
+    for f in $(find scripts libopencm3/scripts -type f); do
+      patchShebangs "$f"
+    done
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+    ${stdenv.shell} ${./helper.sh}
+    runHook postBuild
+  '';
+
+  dontInstall = true;
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    description = "In-application debugger for ARM Cortex microcontrollers";
+    longDescription = ''
+      The Black Magic Probe is a modern, in-application debugging tool
+      for embedded microprocessors. It allows you to see what is going
+      on "inside" an application running on an embedded microprocessor
+      while it executes.
+
+      This package builds the firmware for all supported platforms,
+      placing them in separate directories under the firmware
+      directory.  It also places the FTDI version of the blackmagic
+      executable in the bin directory.
+    '';
+    homepage = "https://github.com/blacksphere/blackmagic";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ pjones emily sorki ];
+    # fails on darwin with
+    # arm-none-eabi-gcc: error: unrecognized command line option '-iframework'
+    platforms = platforms.linux;
+  };
+}

pkgs/development/embedded/blackmagic/helper.sh

@@ -0,0 +1,52 @@
+################################################################################
+# Build all of the platforms manually since the `all_platforms' target
+# doesn't preserve all of the build outputs and overrides CFLAGS.
+set -e
+set -u
+
+################################################################################
+# Prevent a warning from shellcheck:
+out=${out:-/tmp}
+
+################################################################################
+export CFLAGS=$NIX_CFLAGS_COMPILE
+export MAKEFLAGS="\
+  ${enableParallelBuilding:+-j${NIX_BUILD_CORES} -l${NIX_BUILD_CORES}}"
+
+################################################################################
+PRODUCTS="blackmagic.bin blackmagic.hex blackmagic_dfu.bin blackmagic_dfu.hex"
+
+################################################################################
+make_platform() {
+  echo "Building for hardware platform $1"
+
+  make clean
+  make PROBE_HOST="$1"
+
+  if [ "$1" = "hosted" ]; then
+    install -m 0555 blackmagic "$out/bin"
+  fi
+
+  for f in $PRODUCTS; do
+    if [ -r "$f" ]; then
+      mkdir -p "$out/firmware/$1"
+      install -m 0444 "$f" "$out/firmware/$1"
+    fi
+  done
+
+}
+
+################################################################################
+# Start by building libopencm3:
+make -C libopencm3
+
+################################################################################
+# And now all of the platforms:
+cd src
+
+mkdir -p "$out/bin"
+
+for platform in platforms/*/Makefile.inc; do
+  probe=$(basename "$(dirname "$platform")")
+  make_platform "$probe"
+done