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/tools/misc/brltty/default.nix

@@ -0,0 +1,95 @@
+{ lib, stdenv, fetchurl, pkg-config, python3, bluez
+, tcl, acl, kmod, coreutils, shadow, util-linux, udev
+, alsaSupport ? stdenv.isLinux, alsa-lib
+, systemdSupport ? stdenv.isLinux, systemd
+}:
+
+stdenv.mkDerivation rec {
+  pname = "brltty";
+  version = "6.3";
+
+  src = fetchurl {
+    url = "https://brltty.app/archive/${pname}-${version}.tar.gz";
+    sha256 = "14psxwlvgyi2fj1zh8rfykyjcjaya8xa7yg574bxd8y8n49n8hvb";
+  };
+
+  nativeBuildInputs = [ pkg-config python3.pkgs.cython tcl ];
+  buildInputs = [ bluez ]
+    ++ lib.optional alsaSupport alsa-lib
+    ++ lib.optional systemdSupport systemd;
+
+  meta = {
+    description = "Access software for a blind person using a braille display";
+    longDescription = ''
+      BRLTTY is a background process (daemon) which provides access to the Linux/Unix
+      console (when in text mode) for a blind person using a refreshable braille display.
+      It drives the braille display, and provides complete screen review functionality.
+      Some speech capability has also been incorporated.
+    '';
+    homepage = "https://brltty.app";
+    license = lib.licenses.gpl2Plus;
+    maintainers = [ lib.maintainers.bramd ];
+    platforms = lib.platforms.all;
+  };
+
+  makeFlags = [
+    "PYTHON_PREFIX=$(out)"
+    "SYSTEMD_UNITS_DIRECTORY=$(out)/lib/systemd/system"
+    "SYSTEMD_USERS_DIRECTORY=$(out)/lib/sysusers.d"
+    "SYSTEMD_FILES_DIRECTORY=$(out)/lib/tmpfiles.d"
+    "UDEV_LIBRARY_DIRECTORY=$(out)/lib/udev"
+    "UDEV_RULES_TYPE=all"
+    "POLKIT_POLICY_DIR=$(out)/share/polkit-1/actions"
+    "POLKIT_RULE_DIR=$(out)/share/polkit-1/rules.d"
+  ];
+  configureFlags = [
+    "--with-writable-directory=/run/brltty"
+    "--with-updatable-directory=/var/lib/brltty"
+    "--with-api-socket-path=/var/lib/BrlAPI"
+  ];
+  installFlags = [ "install-systemd" "install-udev" "install-polkit" ];
+
+  preConfigure = ''
+    substituteInPlace configure --replace /sbin/ldconfig ldconfig
+
+    # Some script needs a working tclsh shebang
+    patchShebangs .
+
+    # Skip impure operations
+    substituteInPlace Programs/Makefile.in    \
+      --replace install-writable-directory "" \
+      --replace install-apisoc-directory ""   \
+      --replace install-api-key ""
+  '';
+
+  postInstall = ''
+    # Rewrite absolute paths
+    substituteInPlace $out/bin/brltty-mkuser \
+      --replace '/sbin/nologin' '${shadow}/bin/nologin'
+    (
+      cd $out/lib
+      substituteInPlace systemd/system/brltty@.service \
+        --replace '/usr/lib' "$out/lib" \
+        --replace '/sbin/modprobe' '${kmod}/bin/modprobe'
+      # Ensure the systemd-wrapper script uses the correct path to the brltty binary
+      sed "/^Environment=\"BRLTTY_EXECUTABLE_ARGUMENTS.*/a Environment=\"BRLTTY_EXECUTABLE_PATH=$out/bin/brltty\"" -i systemd/system/brltty@.service
+      substituteInPlace systemd/system/brltty-device@.service \
+        --replace '/usr/bin/true' '${coreutils}/bin/true'
+      substituteInPlace udev/rules.d/90-brltty-uinput.rules \
+        --replace '/usr/bin/setfacl' '${acl}/bin/setfacl'
+      substituteInPlace tmpfiles.d/brltty.conf \
+        --replace "$out/etc" '/etc'
+
+      # Remove unused commands from udev rules
+      sed '/initctl/d' -i udev/rules.d/90-brltty-device.rules
+      # Remove pulse-access group from systemd unit and sysusers
+      substituteInPlace systemd/system/brltty@.service \
+        --replace 'SupplementaryGroups=pulse-access' '# SupplementaryGroups=pulse-access'
+      substituteInPlace sysusers.d/brltty.conf \
+        --replace 'm brltty pulse-access' '# m brltty pulse-access'
+     )
+     substituteInPlace $out/libexec/brltty/systemd-wrapper \
+       --replace 'logger' "${util-linux}/bin/logger" \
+       --replace 'udevadm' "${udev}/bin/udevadm"
+  '';
+}