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/libraries/libsignon-glib/default.nix

@@ -0,0 +1,59 @@
+{ lib, stdenv, fetchgit, nix-update-script, pkg-config, meson, ninja, vala, python3, gtk-doc, docbook_xsl, docbook_xml_dtd_43, docbook_xml_dtd_412, glib, check, gobject-introspection }:
+
+stdenv.mkDerivation rec {
+  pname = "libsignon-glib";
+  version = "2.1";
+
+  outputs = [ "out" "dev" "devdoc" "py" ];
+
+  src = fetchgit {
+    url = "https://gitlab.com/accounts-sso/${pname}";
+    rev = "refs/tags/${version}";
+    sha256 = "0gnx9gqsh0hcfm1lk7w60g64mkn1iicga5f5xcy1j9a9byacsfd0";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [
+    check
+    docbook_xml_dtd_412
+    docbook_xml_dtd_43
+    docbook_xsl
+    gobject-introspection
+    gtk-doc
+    meson
+    ninja
+    pkg-config
+    python3
+    vala
+  ];
+
+  buildInputs = [
+    glib
+    python3.pkgs.pygobject3
+  ];
+
+  mesonFlags = [
+    "-Dintrospection=true"
+    "-Dpy-overrides-dir=${placeholder "py"}/${python3.sitePackages}/gi/overrides"
+  ];
+
+  postPatch = ''
+    chmod +x build-aux/gen-error-map.py
+    patchShebangs build-aux/gen-error-map.py
+  '';
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = pname;
+    };
+  };
+
+  meta = with lib; {
+    description = "A library for managing single signon credentials which can be used from GLib applications";
+    homepage = "https://gitlab.com/accounts-sso/libsignon-glib";
+    license = licenses.lgpl21;
+    maintainers = with maintainers; [ ];
+    platforms = platforms.linux;
+  };
+}
+