prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  'install_folder' attribute is not always set
  To reproduce, take https://github.com/memsharded/conan-hello example with one addition:
  ```python
      def package(self):
          print("self.source_folder:", self.source_folder)
          print("self.build_folder:", self.build_folder)
          print("self.install_folder:", self.install_folder)
          ...
  ```
  now package it:
  ```
  conan create . dbely/testing
  ```
  everything goes well, with the output
  ```
  Hello/0.1@dbely/testing: Calling package()
  self.source_folder: C:\Users\dbely\.conan\data\Hello\0.1\dbely\testing\build\6cc50b139b9c3d27b3e9042d5f5372d327b3a9f7
  self.build_folder: C:\Users\dbely\.conan\data\Hello\0.1\dbely\testing\build\6cc50b139b9c3d27b3e9042d5f5372d327b3a9f7
  self.install_folder: C:\Users\dbely\.conan\data\Hello\0.1\dbely\testing\build\6cc50b139b9c3d27b3e9042d5f5372d327b3a9f7
  ```
  Now do it step by step:
  ```
  conan source .
  conan install .
  conan build .
  conan package .
  ```
  All the commands succeed except the last one:
  ```
  PROJECT: Calling package()
  self.source_folder: C:\Users\dbely\conan\conan-hello.git
  self.build_folder: C:\Users\dbely\conan\conan-hello.git
  ERROR: Hello/0.1@PROJECT: Error in package() method, line 21
          print("self.install_folder:", self.install_folder)
          AttributeError: 'HelloConan' object has no attribute 'install_folder'
  ```
  
  
  </issue>
  <code>
  [start of conans/client/packager.py]
  1 import os
  2 import shutil
  3 
  4 from conans.client import tools
  5 from conans.util.files import mkdir, save, rmdir
  6 from conans.util.log import logger
  7 from conans.paths import CONANINFO, CONAN_MANIFEST
  8 from conans.errors import ConanException, ConanExceptionInUserConanfileMethod, conanfile_exception_formatter
  9 from conans.model.manifest import FileTreeManifest
  10 from conans.client.output import ScopedOutput
  11 from conans.client.file_copier import FileCopier
  12 
  13 
  14 def create_package(conanfile, source_folder, build_folder, package_folder, install_folder,
  15                    output, local=False, copy_info=False):
  16     """ copies built artifacts, libs, headers, data, etc from build_folder to
  17     package folder
  18     """
  19     mkdir(package_folder)
  20 
  21     # Make the copy of all the patterns
  22     output.info("Generating the package")
  23     output.info("Package folder %s" % (package_folder))
  24 
  25     try:
  26         package_output = ScopedOutput("%s package()" % output.scope, output)
  27         output.highlight("Calling package()")
  28         conanfile.package_folder = package_folder
  29         conanfile.source_folder = source_folder
  30         conanfile.build_folder = build_folder
  31 
  32         def recipe_has(conanfile, attribute):
  33             return attribute in conanfile.__class__.__dict__
  34 
  35         if source_folder != build_folder:
  36             conanfile.copy = FileCopier(source_folder, package_folder, build_folder)
  37             with conanfile_exception_formatter(str(conanfile), "package"):
  38                 with tools.chdir(source_folder):
  39                     conanfile.package()
  40             warn = recipe_has(conanfile, "package")
  41             conanfile.copy.report(package_output, warn=warn)
  42 
  43         conanfile.copy = FileCopier(build_folder, package_folder)
  44         with tools.chdir(build_folder):
  45             with conanfile_exception_formatter(str(conanfile), "package"):
  46                 conanfile.package()
  47         warn = recipe_has(conanfile, "build") and recipe_has(conanfile, "package")
  48         conanfile.copy.report(package_output, warn=warn)
  49     except Exception as e:
  50         if not local:
  51             os.chdir(build_folder)
  52             try:
  53                 rmdir(package_folder)
  54             except Exception as e_rm:
  55                 output.error("Unable to remove package folder %s\n%s" % (package_folder, str(e_rm)))
  56                 output.warn("**** Please delete it manually ****")
  57 
  58         if isinstance(e, ConanExceptionInUserConanfileMethod):
  59             raise
  60         raise ConanException(e)
  61 
  62     _create_aux_files(install_folder, package_folder, conanfile, copy_info)
  63     output.success("Package '%s' created" % os.path.basename(package_folder))
  64 
  65 
  66 def _create_aux_files(install_folder, package_folder, conanfile, copy_info):
  67     """ auxiliary method that creates CONANINFO and manifest in
  68     the package_folder
  69     """
  70     logger.debug("Creating config files to %s" % package_folder)
  71     if copy_info:
  72         try:
  73             shutil.copy(os.path.join(install_folder, CONANINFO), package_folder)
  74         except IOError:
  75             raise ConanException("%s does not exist inside of your %s folder. "
  76                                  "Try to re-build it again to solve it."
  77                                  % (CONANINFO, install_folder))
  78     else:
  79         save(os.path.join(package_folder, CONANINFO), conanfile.info.dumps())
  80 
  81     # Create the digest for the package
  82     digest = FileTreeManifest.create(package_folder)
  83     save(os.path.join(package_folder, CONAN_MANIFEST), str(digest))
  84
  [end of conans/client/packager.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/conans/client/packager.py b/conans/client/packager.py
  --- a/conans/client/packager.py
  +++ b/conans/client/packager.py
  @@ -27,6 +27,7 @@
           output.highlight("Calling package()")
           conanfile.package_folder = package_folder
           conanfile.source_folder = source_folder
  +        conanfile.install_folder = install_folder
           conanfile.build_folder = build_folder
   
           def recipe_has(conanfile, attribute):
  
verification_info: {"golden_diff": "diff --git a/conans/client/packager.py b/conans/client/packager.py\n--- a/conans/client/packager.py\n+++ b/conans/client/packager.py\n@@ -27,6 +27,7 @@\n         output.highlight(\"Calling package()\")\n         conanfile.package_folder = package_folder\n         conanfile.source_folder = source_folder\n+        conanfile.install_folder = install_folder\n         conanfile.build_folder = build_folder\n \n         def recipe_has(conanfile, attribute):\n", "issue": "'install_folder' attribute is not always set\nTo reproduce, take https://github.com/memsharded/conan-hello example with one addition:\r\n```python\r\n    def package(self):\r\n        print(\"self.source_folder:\", self.source_folder)\r\n        print(\"self.build_folder:\", self.build_folder)\r\n        print(\"self.install_folder:\", self.install_folder)\r\n        ...\r\n```\r\nnow package it:\r\n```\r\nconan create . dbely/testing\r\n```\r\neverything goes well, with the output\r\n```\r\nHello/0.1@dbely/testing: Calling package()\r\nself.source_folder: C:\\Users\\dbely\\.conan\\data\\Hello\\0.1\\dbely\\testing\\build\\6cc50b139b9c3d27b3e9042d5f5372d327b3a9f7\r\nself.build_folder: C:\\Users\\dbely\\.conan\\data\\Hello\\0.1\\dbely\\testing\\build\\6cc50b139b9c3d27b3e9042d5f5372d327b3a9f7\r\nself.install_folder: C:\\Users\\dbely\\.conan\\data\\Hello\\0.1\\dbely\\testing\\build\\6cc50b139b9c3d27b3e9042d5f5372d327b3a9f7\r\n```\r\nNow do it step by step:\r\n```\r\nconan source .\r\nconan install .\r\nconan build .\r\nconan package .\r\n```\r\nAll the commands succeed except the last one:\r\n```\r\nPROJECT: Calling package()\r\nself.source_folder: C:\\Users\\dbely\\conan\\conan-hello.git\r\nself.build_folder: C:\\Users\\dbely\\conan\\conan-hello.git\r\nERROR: Hello/0.1@PROJECT: Error in package() method, line 21\r\n        print(\"self.install_folder:\", self.install_folder)\r\n        AttributeError: 'HelloConan' object has no attribute 'install_folder'\r\n```\r\n\n", "before_files": [{"content": "import os\nimport shutil\n\nfrom conans.client import tools\nfrom conans.util.files import mkdir, save, rmdir\nfrom conans.util.log import logger\nfrom conans.paths import CONANINFO, CONAN_MANIFEST\nfrom conans.errors import ConanException, ConanExceptionInUserConanfileMethod, conanfile_exception_formatter\nfrom conans.model.manifest import FileTreeManifest\nfrom conans.client.output import ScopedOutput\nfrom conans.client.file_copier import FileCopier\n\n\ndef create_package(conanfile, source_folder, build_folder, package_folder, install_folder,\n                   output, local=False, copy_info=False):\n    \"\"\" copies built artifacts, libs, headers, data, etc from build_folder to\n    package folder\n    \"\"\"\n    mkdir(package_folder)\n\n    # Make the copy of all the patterns\n    output.info(\"Generating the package\")\n    output.info(\"Package folder %s\" % (package_folder))\n\n    try:\n        package_output = ScopedOutput(\"%s package()\" % output.scope, output)\n        output.highlight(\"Calling package()\")\n        conanfile.package_folder = package_folder\n        conanfile.source_folder = source_folder\n        conanfile.build_folder = build_folder\n\n        def recipe_has(conanfile, attribute):\n            return attribute in conanfile.__class__.__dict__\n\n        if source_folder != build_folder:\n            conanfile.copy = FileCopier(source_folder, package_folder, build_folder)\n            with conanfile_exception_formatter(str(conanfile), \"package\"):\n                with tools.chdir(source_folder):\n                    conanfile.package()\n            warn = recipe_has(conanfile, \"package\")\n            conanfile.copy.report(package_output, warn=warn)\n\n        conanfile.copy = FileCopier(build_folder, package_folder)\n        with tools.chdir(build_folder):\n            with conanfile_exception_formatter(str(conanfile), \"package\"):\n                conanfile.package()\n        warn = recipe_has(conanfile, \"build\") and recipe_has(conanfile, \"package\")\n        conanfile.copy.report(package_output, warn=warn)\n    except Exception as e:\n        if not local:\n            os.chdir(build_folder)\n            try:\n                rmdir(package_folder)\n            except Exception as e_rm:\n                output.error(\"Unable to remove package folder %s\\n%s\" % (package_folder, str(e_rm)))\n                output.warn(\"**** Please delete it manually ****\")\n\n        if isinstance(e, ConanExceptionInUserConanfileMethod):\n            raise\n        raise ConanException(e)\n\n    _create_aux_files(install_folder, package_folder, conanfile, copy_info)\n    output.success(\"Package '%s' created\" % os.path.basename(package_folder))\n\n\ndef _create_aux_files(install_folder, package_folder, conanfile, copy_info):\n    \"\"\" auxiliary method that creates CONANINFO and manifest in\n    the package_folder\n    \"\"\"\n    logger.debug(\"Creating config files to %s\" % package_folder)\n    if copy_info:\n        try:\n            shutil.copy(os.path.join(install_folder, CONANINFO), package_folder)\n        except IOError:\n            raise ConanException(\"%s does not exist inside of your %s folder. \"\n                                 \"Try to re-build it again to solve it.\"\n                                 % (CONANINFO, install_folder))\n    else:\n        save(os.path.join(package_folder, CONANINFO), conanfile.info.dumps())\n\n    # Create the digest for the package\n    digest = FileTreeManifest.create(package_folder)\n    save(os.path.join(package_folder, CONAN_MANIFEST), str(digest))\n", "path": "conans/client/packager.py"}]}