old_contents: 
  from pythonforandroid.toolchain import (
      CompiledComponentsPythonRecipe,
      Recipe,
      current_directory,
      info,
      shprint,
  )
  from os.path import exists, join, realpath
  import sh
  import glob
  
  
  class PyCryptoRecipe(CompiledComponentsPythonRecipe):
      version = '2.6.1'
      url = 'https://pypi.python.org/packages/source/p/pycrypto/pycrypto-{version}.tar.gz'
      depends = ['openssl', 'python2']
  
      def prebuild_arch(self, arch):
          super(PyCryptoRecipe, self).prebuild_arch(arch)
          build_dir = self.get_build_dir(arch.arch)
          if exists(join(build_dir, '.patched')):
              print('pycrypto already patched, skipping')
              return
          self.apply_patch('add_length.patch')
          shprint(sh.touch, join(build_dir, '.patched'))
  
      def get_recipe_env(self, arch):
          env = super(PyCryptoRecipe, self).get_recipe_env(arch)
          openssl_build_dir = Recipe.get_recipe('openssl', self.ctx).get_build_dir(arch.arch)
          env['CC'] = '%s -I%s' % (env['CC'], join(openssl_build_dir, 'include'))
          env['LDFLAGS'] = env['LDFLAGS'] + ' -L{}'.format(
              self.ctx.get_libs_dir(arch.arch) +
              '-L{}'.format(self.ctx.libs_dir)) + ' -L{}'.format(
              openssl_build_dir)
          env['EXTRA_CFLAGS'] = '--host linux-armv'
          env['ac_cv_func_malloc_0_nonnull'] = 'yes'
          return env
  
      def build_compiled_components(self, arch):
          info('Configuring compiled components in {}'.format(self.name))
  
          env = self.get_recipe_env(arch)
          with current_directory(self.get_build_dir(arch.arch)):
              configure = sh.Command('./configure')
              shprint(configure, '--host=arm-eabi',
                      '--prefix={}'.format(self.ctx.get_python_install_dir()),
                      '--enable-shared', _env=env)
          super(PyCryptoRecipe, self).build_compiled_components(arch)
  
  recipe = PyCryptoRecipe()
  
new_contents: 
  from pythonforandroid.toolchain import (
      CompiledComponentsPythonRecipe,
      Recipe,
      current_directory,
      info,
      shprint,
  )
  from os.path import exists, join, realpath
  import sh
  import glob
  
  
  class PyCryptoRecipe(CompiledComponentsPythonRecipe):
      version = '2.6.1'
      url = 'https://pypi.python.org/packages/source/p/pycrypto/pycrypto-{version}.tar.gz'
      depends = ['openssl', 'python2']
  
      def prebuild_arch(self, arch):
          super(PyCryptoRecipe, self).prebuild_arch(arch)
          build_dir = self.get_build_dir(arch.arch)
          if exists(join(build_dir, '.patched')):
              print('pycrypto already patched, skipping')
              return
          self.apply_patch('add_length.patch', arch.arch)
          shprint(sh.touch, join(build_dir, '.patched'))
  
      def get_recipe_env(self, arch):
          env = super(PyCryptoRecipe, self).get_recipe_env(arch)
          openssl_build_dir = Recipe.get_recipe('openssl', self.ctx).get_build_dir(arch.arch)
          env['CC'] = '%s -I%s' % (env['CC'], join(openssl_build_dir, 'include'))
          env['LDFLAGS'] = env['LDFLAGS'] + ' -L{}'.format(
              self.ctx.get_libs_dir(arch.arch) +
              '-L{}'.format(self.ctx.libs_dir)) + ' -L{}'.format(
              openssl_build_dir)
          env['EXTRA_CFLAGS'] = '--host linux-armv'
          env['ac_cv_func_malloc_0_nonnull'] = 'yes'
          return env
  
      def build_compiled_components(self, arch):
          info('Configuring compiled components in {}'.format(self.name))
  
          env = self.get_recipe_env(arch)
          with current_directory(self.get_build_dir(arch.arch)):
              configure = sh.Command('./configure')
              shprint(configure, '--host=arm-eabi',
                      '--prefix={}'.format(self.ctx.get_python_install_dir()),
                      '--enable-shared', _env=env)
          super(PyCryptoRecipe, self).build_compiled_components(arch)
  
  recipe = PyCryptoRecipe()
  
subject: fix pycrypto apply_patch error